Other Companies Interview Questions

8/17/2019 Other Companies Interview Questions

1/43

MPHASIS

1. What is Time dimension?

2. What is Shell script?

3. What is SQL override?. What is So!rce Q!ali"er?

#. $an ! load the %!meric val!es in to the Tar&et?

'. Ho( can import the data )rom data*ases?

+. Ho( can import the data )rom data*ases i) connection is disconnect?

,. Ho( can ! import the -at "le data into the desi&ner (or space?

/. Ho( can load the -at "le data into the tar&et?

10. What is Sess start time?

12.In SQL override can ! appl more than one condition?

13. What is the dierence *( rm and rmdir in !ni4?

1#. What is the 5vent (ait tas?

1'. What is Add Trim?

1+. What is the dierence *( char and varchar2?

A$$5%T675

1. What is slo(l chan&in& dimension?

2. Ho( to implement the S$89s in !r pro:ect?

3. What are the mappin&s o! have done in !r proect?

. What is parameter "le?

#. What is 6nit testin&?

'. In (hich mappin& o! have done !nit testin&?

+. What is per)ormance testin&?

,. What is Tar&et !pdate override?

/. What is Shared cache?

10. What is data partitionin&?


2/43

H$L

1. What are tpes o) Loo!p trans)ormation?

2. What is !nconnected trans)ormation?

3. What are the :oiner properties?. What are the Se;!ence &enerator tr properties?

#. What are the col!mns in Se;!ence &enerator tr?

'. Ho( can ! import


3/43

HP

1. What is mdir command?

2. What is ls Ct command?3. What are "le creatin& commands?

. What is the !se o) 5cho?

#. $an ! create the "le * !sin& vi=editor?

+. What is active and passive tr?

,. I have one "le )rom data*ase and another "le )rom -at "le. Ho( can o! mer&ethem?

/. What are the re;!irements )or :oin?

10. Write a ;!er to displa onl !ni;!e val!es?

13. What is the so!rce ;!ali"er trans)ormation?

1. What is tail command?

MPHASIS

1. $an o! !se Mapplet parameters (ith in the mappin&s?

2. $an o! !se mappin& parameters (ith in the Mapplet?

3. What are the trans)ormations doesn9t s!pport Mapplet?

. What is s!rro&ate e?

#. What is %at!ral e?

'. What is the Inner :oin and @!ter :oin?

+. In sin&le loo!p can ! !se m!ltiple ta*les?

,. What is tar&et !pdate override?

/. What is trans)ormation?

10. What is an active and passive tr?

11. What are the active trans)ormations?

WIP7@


4/43

1. Which schema o! are !sin& in o!r pro:ect?

2. What is star schema?

3. Ho( man dimensions are there and (hat are the?

. What are the )act ta*les in o!r pro:ect and (hat are the?#. In o!r pro:ect )act ta*le is dependent or independent?

'. What are the loadin& tpes?

+. What is the tar&et load order?

,. 8id o! !se per)ormance t!nin& method?

/. 8id o! !se %ormaliDation trans)ormation?

10. 8id o! !se code pa&e !sed?

11. 8id o! !se parameters in o!r mappin&s?

12. What are session parameters?

13. What is Incremental a&&re&ation?

1. What is the dierence *et(een "lter and 7o!ter?

1#. What is the connected and !nconnected loo!p?

I=EAT5F

1. What is dierence *( &rep and "nd command?

2. Ho( man dimensions are there in o!r pro:ect?

3. Ho( man )act ta*les are there in o!r pro:ect? And (hat are the?

. What is dierence *( +.1 and ,.1?

#. What is service oriented architect!re?

'. a. Master so!rce have # records and 8etail so!rce have , records com*ine thedata * !sin& :oiner tr==t1

*. Master so!rce have , records and 8etail have # records====t2

Which tar&et &ets more records?

I) ! tae )!ll o!ter :oin (hat is the o!tp!t?


5/43


6/43

c. de)a!lt &ro!p

I) enter 1,00 (hat is the o!tp!t?

/. I have one mappin& lie 5mpSQ.5mp===54pTar&et?

Witho!t SQ.5mp it (ill (or or not?10. de)a!lt SQ.5MP (ill appear in the desi&ner )or (hat?

11. What is the dierence *( "lter and ro!ter?

12. What is !nit testin&?

13. What are s!* ;!eries?

1. 5ntit1 5ntit2

1F %

$an ! &ive me e4ample ta*le?

A$$5%T675

1. What is the dierence *( star schema and sno( -ae schema?

2. What is the star schema?

3. What is the dimension and (hat are the tpes o) dimensions?

. What are :!nB de&enerate and con)ormed dimensions?

#. What are the tpes o) )act ta*les?

'. What are the tpes o) )acts?

+. What is the dierence *( :oiner and so!rce ;!ali"er?

,. What is the dierence *( "lter and ro!ter?

/. What is the mappin& parameters and mappin& varia*les?

10. What is the dierence *( mappin& and Mapplet?

11. What are the tr9s doesn9t !se in Mapplet )or (hat?

12. What is Mapplet?

1. What are the tpes o) S$89s?

1#. What is the dierence *( S$82 and S$83?

1'. !sin& Loo!p tr can ! loo!p -at "le?


7/43

1+. What are the settin&s o! have done in !pdate strate& tr (hen o! load thedata into tar&ets?

@T5$HF

1. What is the dierence *( :oiner and loo!p tr?

2. In "lter tr * de)a!lt Tr!e9B remove that tr!e (hat is the op?

3. 8ispla second ma4 sal )rom emp?

. What is the dierence *( s!* ;!er and correlated s!* ;!er?

#. What is the dierence *( master so!rce and detail so!rce?

'. What is partitionin& and (hat are the tpes?

+. What is the dierence *( mappin& level and session level in !pdate strate& tr?

,. In !pdate strate& tr * de)a!lt 88NI%S57TB 88N6P8AT5B i) ! replace anthin&and p!t ' in an(here (hat is the op?

/. What are the tpes o) -at "les?

10. I have 2 so!rces and one :oinB can ! partition a)ter :oin?

$H5%%AI=6SA

1. What is *!l loadin& and (hat are the disadvanta&es and are there anconstraints?

2. What is active and passive tr?

3. I have relational so!rce I (ant to eliminate the d!plicates?

. I have -at "le so!rce I (ant to eliminate the d!plicates in so!rce ;!ali"er is itpossi*le?

#. What is dnamic loo!ps?

'. What are the tpes in S$8 tpe2?


8/43

5A%5 CI%8IA

1. Write a ;!er to displa ma4 sal )rom 5MP?

2. Write a ;!er to displa name as 7a:9Omeans 3 char name and location asA%EAL@759 O!pper ?

3. What is partitionin&?

. What is the !se o) Inde4es in the tar&et?

#. What is materialiDed vie(?

'. What is the dierence *( vie( and materialiDed vie(?

+. I) session )ails (hat can ! does?

,. What are the inde4es o! have !sed in mappin&s?

/. What is *itmap inde4?

11. Sorter tr is activepassive?

13. What are the active and passive trans)ormations?

HP

1. >ilter and ro!ter (hich is *etter?

2. Write a ;!er to delete d!plicates records?

3. In In)ormatica ho( can o! delete d!plicate records?

. What is loo!p trans)ormation?

#. I) o! (rite s;l override in loo!p then it is activepassive?

'. In !pdate strate& trans)ormation p!t p. and removes p. in tar&et (hat ishappened?

@TH57S

1. I have 1000 records and 2 tar&ets I (ant to load "rst #00 records into one tar&ett1 and remainin& into another tar&et t2?

2. I have some records and 3 tar&etsB I (ant to load "rst record into "rst tar&et t1and second record into second tar&et t2 and third record into third tar&et t3respectivelR.and )o!rth record &oes "rst tar&et t1 onl?

3. Witho!t common col!mns can o! :oin 2 ta*les?

. Witho!t :oiner trans)ormation can o! :oin 2 ta*les?

#. Witho!t s!rro&ate e can o! &enerate es?


9/43

'. What are the dierence *( s!rro&ate eB %at!ral eB and primar e?

+. I have 2 so!rcesB s1 contain 1# records and s2 contain 10 records *!t there isonl 3 common records * !sin& )!ll o!ter :oin (hat is the o!tp!t?

,. Witho!t !pdate strate& tr can o! !pdate in the tar&et ta*le?

/. Which ta*le taes a master so!rce?

10. What is le)t o!ter :oin?

11. $an (e !se m!ltiple loo!ps in mappin&?

12. Which dimension techni;!e !sed in o!r pro:ect?

13. Ho( to e4tract the csv "le in a mappin&?

1#. Ho( to e4tract the e4cel "les?

1'. What is dierence *( tr!ncate and delete?

1+. I) I have no tr!ncate option ho( can o! per)orm?

1,. Write the ;!er 2nd ma4 sal?

1/. Which trans)ormation havin& cache concepts?

20. What is data partitionin&?

21. What are the tpes o) caches in loo!p tr?

22. What is the nth ;!er sal?

23. What is to!ch command?

2. What are the dierence *( :oiner and !nion?

2#. Ho( can ! sched!le to start the 2 (or -o(s i) one (or-o( complete a)tersecond (or-o( start?

2'. What is the command to &et the !ni;!e records?

2+. In a&&re&ator tr I dint &ive the an e4pression (hat is the o!tp!t?

2,. I have 3 (or-o(s each one havin& sessions on the (or-o( monitorB thensession 1 completes and session2 also completes s!ccess)!ll and session 3 )ailed.

What can ! do?

2/. What is the dierence *( stop and a*ort?

30. I have one so!rce contains records and one e4pression tr is there and tar&et&et onl 2 records. Is this possi*le?

31. What is the save pint?


10/43

In)ormatica

1. What is the dierence *et(een ,.1 and ,.' version o) In)ormatica?

2. What is a :oiner trans)ormation? Tpes o) :oins

3. There are t(o so!rces A and B I (ant to :oin I8 in *oth the so!rces and &et thesalar. What all trans)ormations can *e !sed?

. There is three :oin conditions in a :oinerB I8 J I81B %ame J %ame1B Loc J Loc1.Whether the :oin conditions (ill *e treated as A%8 or @7?

#. There are 3 conditions I8 J I81B %ame J %ame1B Loc K Loc1. Whichtrans)ormation (ill o! !se?

'. What is the dierence *et(een oiner and 6nion Trans)ormation?

+. What is "lter trans)ormation? Is it reall re;!ired a)ter a so!rce ;!ali"er?

,. What is SQL @verride?

/. Ho( do o! move code to prod!ction? Where do o! cop the code to versionin&repositor?

10. # srcsO>> havin& same str!ct!reB Ho( to load in to t&t? OStat!s *ar

.t&t load orderin& OdirectN one "leB indirectN all the "les.

11. $lient tools o) In)ormatica?

12. Where (e create re!sa*le trans)?

13. 8i *( Mapplet and re!sa*le trans)

1. 8ierent tass?

1#. In a&&r (e can9t &ive an &ro!p * optionB (hat is the op?

1'. In (hat (a (e !se stored proced!re in In)ormatica?

1+. 8i *( "lter and ro!ter?

1,. Active and passive trans)?

1/. Star schema and sno( -ae schema? In (hich (e "nd hierarchies?

20. 6nit testin& and peer testin&?

21. Tpes o) ))?

22. $an (e create more no.o) pipelines in the mappin&?

23. Ho( to improve per) o) a&&r?

2. !l normal mode?


11/43

2#. 8ata driven option OinsertB deleteB !pdate rec !pdatestrate&Nsessionlevel

2'. Parameter "le?

2'. What is 8ata Mart?

2+. $an (e have more than one )act ta*le in star schema?2,. Is there an limit o) hierarchies in sno( -ae?

2/. Tpes o) )acts

30. S$8B Tpes

31. 8i *( tpe2 and tpe3

32. S$82

33. 8i *( M MPB (here (e store these val!es

3. ottle necs

3#. Per)ormance t!nin&

3'. Where do o! store re:ected "les

3+. 3 srcsOoracle and ho( to load 3rd src 1st 1st is 2nd ..

3,. What happens (hen (e can9t &ive the data driven in 6pdate Strate&?

3/. In In)ormatica o! have the option !ser de"ned )!nctionB

0. P!sh do(n optimiDation

1. SP trans)

2. $md tas

3. Ho( man (as o! can :oin the srcs

. >or (hich tpe o) :oin !se the LP

#. 8i ( LP conn !nconn

'. In (hich scenario (e !se the 6nconnected LP

+. Active passive Trans)

,. In SQ (e can :oin t(o >>?

/. Wh did o! &o )or :oiner to :oin src Ooracle instead o) SQ?

#0. $on"rmed 8e&enerated dimension

#2. What is di *( the s;l override in SQ LP?


12/43

#3. Ho( to improve per) o) LPB A&&r

#. LP is active or passive

##. 5W 57 tass

#'. When (e !se dnamic LP#+. @LTP @LAP

#,. Partitionin&

#/. What data stored in inde4 data cache in LP

'0. Ho( man (as ! can "lter the records?

'1. >ilter ro!ter

'2. oiner LP

'3. What is post sess s;l and pre sess s;l

'. Ta*le (ith 1 lac records t2 = 20 records

While :oinin& (hich (ill *e master and details

'#. %ormaliDer trans)ormation

''. Was to "lter d!plicate records in In)ormatica

'+. $an ! remove d!plicates !sin& so!rce ;!ali"er

',. What is an incremental a&&re&ation?

'/. 2 loo!p trans)ormations on same ta*le Bstill cannot share the cache .@n (hatscenarios is that lp one has 3 conditions Blp2 has loop conditions can thecaches *e shared ?

+0. S!rro&ate e? What9s the p!rpose and (h !sed over a primar e?

+1. >act less )act ta*le?

+2. $ommon thin&s ! de"ne in parameter "les

+3. What is handled * !nion trans)ormation !nion or !nion all

+. $an (e !se (here cla!se in loo !p override?+#. What is the de)a!lt :oin that so!rce ;!ali"er provides

+'. So!rce 1 is in one data*ase and so!rce 2 is other data*ase. We &ot to &ive 2connection strin&s. I don9t need to !se :oiner in m mappin&. Ho( can (eachieve?

++. >act ta*le is normaliDeddenormaliDed


13/43

@racle

1. What is a ta*le and Snonm?

2. What is dierence *et(een a Paca&e and Proced!re?3. What are Inde4es?

. 8i *( WH575 and havin& cla!se?

#. Ho( to delete d!plicate records?

'. vie( M.ie(?

+. $orrelated s!* ;!er

,. What is an inline vie(?

/. Implicit c!ror and e4plicit c!rsor

10. Tri&&ers

11. Mer&e stmt. (h is it !sed?

12. 7o( id 7o( %!m

13. Select % th ro(B select top % records

Pro:ect

1. What tpe o) src

2. Ho( man dim )acts in !r pro:ect

3. $omple4 mappin& in o!r pro:

. 8ail ho( man records &ettin& )rom client

#. Which tpe o) :oin !sed?

'. Where ! !sed lp (hich tpe

+. >or e4 o! have to &et the 10rec )rom clientB *!t ! &ot onl / recB (hat is thene4t?

1. Ho( can (e &et more than one ret!rn val!e in !nconn lp?

2. Which trans) are more comple4 Oi.e * !sin& those trans) the the sess taes moretime to r!n

3. When sess tain& more time to r!nB ho( can (e no( (here the pro*lem is?


14/43

. Threads in In)ormatica

#. Are o! a(are o) admin console?

'. When (e r &ettin& moreless no.o) records )rom the clientOIA r!lesBthen (hat (ehave to do i.e. re:ect accept.

+. Ho( man sta&in& areas in the pro:ect?

,. $!rsorB (here (e !se?

/. &rep and )tp

1. Ho( to &et header and trailer in m -at "le o!tp!t...ho( (ill o! do that? i donUt(ant an data ...:!st I need header and )ooter?

2. In 6%I< ho( to "nd the partic!lar t(o names in a "le===What is the command...

3. In o!r pro:ect (e are &ettin& Pipe delimiter "le........i) (e &et comma

delimiter....What is the process (e &one )ollo(?. There are 10 sessions in m (or -o( i) "rst session &ets deleted *mistae......ho( (ill o! recover this session?

#.can (e !se one (orlet in another (orlet??????????

'.i have so!rce and tar&et as -at "le ......i) the record is present in tar&et then (eneed to !pdate i) the recode is ne( need to insert...What are the trans)ormations(e !se to do this?

+.i have -at "le containin& d!plicate val!es.....ho( (ill o! load d!plicate ro(s intoone ta*le and !ni;!e ro(s in to other ta*le??

,.di *et(een V and VV ???????===

/.8ispla details o) all emploees (hose salar is &reater than avera&e salar o)emploees in respective departments.

10.8i *et(een In)ormatica + ,

11.54plain S$8 =1

12.do In)ormatica installed on 6ni4 server on (indo(s server?

13.What is >act Ta*le.

IM

===========

1. (h So!rce Q!ali"er Trans)ormation is 6ni;!e Trans)ormation?

2. 8i *et(een SQ Trans)ormation and >ilter Trans)ormation?


15/43

3.54plain S$8=2 timestamp (ith e4ample?

.What is con"rmed 8imension?

#.(hat are velocit 8oc!ments and ho( the are help)!l in o!r pro:ect?

'.What is star schema and sno( -ae schema? Which is *etter?

1. $opin& o*:ects and !sin& shortc!ts.2. What is dierence *et(een so!rce *ased commit and tar&et *ased commit?3. What are cache loo!p and an 6ncache loo!p?. $onvert so!rce col!mn into Tar&et ro(s?#. What is Tar&et !pdate override? What is the !se o) it?'. What is pre session and post session?+. What is the dierence *et(een re!sa*le trans)ormation and Mapplet?,. What trans)ormations that (e cannot !se in Mapplet?/. What is dierence *( so!rce ;!ali"er trans)ormation and "lter

trans)ormation?

10.What are the &eneral reasons o) session )ail!re (ith loo!p havin& 8namiccache?11.What is dierence *et(een SQL override in so!rce ;!ali"er tr and loo!p tr?12.In ho( man (as can (e delete d!plicate records in -at "les?13.What is the dierence *( oiner and Loo!p tr?1.Inp!t -at "le1 has # col!mnsB -at "le2 has 3 col!mns O%o common col!mn

o!tp!t sho!ld contain mer&ed data O, col!mns.1#.I) I have !sed 2 !pdate strate& tr in m mappin& 1st )or Insert and 2nd one

)or 8eleteB then I chan&ed tar&et option in session properties )rom datadriven to 8elete. What is &oin& to happen?

1'.54plain the tass C 5vent (ait and 5vent raise (ith *!siness scenario.1+.I) I had a -at "le can I !se over ride in SQL or L@@6P T7?

1,.What is the dierence *et(een ST@P and A@7T options?1/.S!ppose (e have 10 records in So!rceB in 7o!ter (e had &iven 2 conditionsas AJ#B AKJ#. %o( (hat (ill *e the o!tp!t?

20.I have a 5MP ta*le as so!rceB , col!mns are connected to ne4t trB *!t onl col!mns are selected in SQL override. What (o!ld *e passed to ne4tcol!mns?

21.I am havin& a so!rce o) 10B000 records. >ind the avera&e *et(een #00 th to'00th records.

1. Which is more ecient WH5759 or HAI%E9 in SQL?

2. What is dierence *et(een 6%I@%9 and 6%I@% ALL9?

3. What is dierence *et(een I5W9 and MAT57IALIX58 I5W9?

. In s!* ;!eries (hich is ecientB the I% cla!se or 5


16/43

+. What is dierence *et(een Tr!ncate and 8elete commands?

,. What is dierence *et(een HAI%E9 and WH5759 cla!se?

/. What is dierence *et(een 85$@859 and $AS59?

10.What is dierence *et(een S6ST79 and I%ST79?11.What is dierence *et(een 6%IQ659 and P7IMA7G 5G9 constraints?

12.What is dierence *et(een P7@$586759 and >6%$TI@%9?

1. In 54pression ho( do o! em*ed the lo&ic o) previo!s val!e and c!rrentval!e to compare them?

2. Tar&et override.

3. Incremental A&&re&ation.

. $oncept o) S!rro&ate e.

#. Ho( 6pdate Strate& can *e !sed and )or (hat p!rpose?

'. What are =Tree itmap inde4es?

+. What are mappin& parameters and mappin& varia*les?

,. Ho( to create parameter "les !sin& mappin&?

/. What is 8namic loo!p and 6n connected loo!p?

10.5rror handlin& in In)ormatica.

11.What is the ne( loo!p ro( in 8namic loo!p?

12.@racle $onnect * cla!se.

13.Tri&&ers in oracle.

1.$ompare stored proced!reB )!nction and paca&e in @racle?

1#.Ho( to chec i) the "le arrived (ith (ron& date in the so!rce location o) -at"le? I) date is not correct ho( to chec? 54F >ilenameNdate.t4t

1'.A ;!er is tain& lon&time than it9s !s!alB ho( to "nd (h is it tain& lon&time or ho( to resolve it?

1+.%ormaliDer Trans)ormation.

1,.6sa&e o) c!tB sed and a( commands.

1/.$ompare &rep and e&rep commands.


17/43

grep Search a Pa tern from current directory.

egrep (grep -E in linux) is extended grep where additional regular expression

metacharacters have been added like ! "! # and ().

20.$ontrol ta*les !sed in the pro:ect.

21.Ho( man sessions o! can r!n in (or-o(?

Q!estions $ollected * atch # st!dentsF1 I (ant to r!n a (or-o( (hich consists o) 3 sessions. !t (hat m ;!estion is. 1st

session sho!ld r!n on 81B i) the "rst session is s!ccess)!l then 2 session sho!ld

r!n on d*2 and 3rd session sho!ld r!n on 83 environments. I (ant 3 dierent

(or-o( lo&s. It sho!ld not override on one lo&?2 I) I had so!rce lie !ni;!e d!plicate records lie 1B1B2B3B3B then i (ant load

!ni;!e records in one tar&et lie 2B and i (ant load d!plicate records lie 1B1B3B3

then (hat is the scenario.3 What is shortc!t in In)ormatica? 8ierence *et(een shortc!tsB re!sa*le o*:ect?

irt!sa 2 A)ter dra&&in& the ports o) 3 so!rces s;lserverB oracleB In)ormi4 to sin&le so!rce

;!ali"er can (e map these ports directl to tar&et and ho(?# ho( can one eliminate d!plicate data (itho!t !sin& distinct option' T$S Q!estionF

So!rce Tar&et

%ameEender Male >emale

Praveena>emale Ar!n

Praveena

Ar!n Male Shiva %!ll

Shiva Male Hari %!ll

Hari MaleS!dheendra %!ll

S!dheendra Male

+ What is cas!al dimension?, Ho( can o! complete !nrecovera*le sessions?/ In ro!ter so!rce is a *o a&e 20 I &iven 3 conditions in ro!ter a20B aKJ20B aJ20

(hich one e4it "rst?10 (hat is the monster dimension plD &ive me one e4ample11 What are the tpes o) mappin& in Eettin& Started WiDard?


18/43

12 S7$1 = 5


19/43

1/. I have -at "les (ith same str!ct!reB ho( man mappin&s sho!ld I create to

load these -at "les.

1. Ho( can o! connect to o!r In)ormatica server i) it is located at dierent

place Onot local to the client?2. H@W 8@ G@6 $@%%5$T T@ 75M@T5 S5757?3. $an (e load data )rom P8> and 5>57 SIX5 6>>57 L@$ SIX5 are related.2.Alternative primar es in t(o tar&et ta*les. Ho( can (e implement this

scenario? Tar&et1

13


20/43

# Tar&et22'

2#.Which 5TL tool is more pre)era*le I%>@7MATI$A or 8ATASTAE5? WHG?

2'.A&&re&ate trans)ormation &ives the last record )rom each &ro!p * de)a!ltB

ho( can (e &et the "rst record )rom each &ro!p?2+.I% (hich scenarios (e can9t con"&!re the a&&re&ator )or sorted inp!t?2,. I) ! cannot "nd (hat o! are looin& )or in a loo!p ta*leB ho( do o!

handle?2/.Ho( to choose n!ll inp!t val!es in a&&re&ator trans)ormation as Deros?30.$an I !ser a mappin& parameter or mappin& varia*le in so!rce ;!ali"er?31.What is the meanin& o) %!m*er o) sorted in p!t9 in So!rce ;!ali"er tr?32.Wh (e are !sin& Tracin& Level in In)ormatica?33.I) the loo!p condition is not matched in connected loo!pB (hat val!e it (ill

ret!rn?3. $an I !se a vie( in m loo!p override?3#.What is the meanin& o) ZLoo!p Polic on M!ltiple Match[?3'.What are trans)ormations (e can !se to &et the data )rom more than one

ta*le?3+.Ho( sorter trans)ormation sorts strin& data? 54plain?3,.Witho!t !sin& sorter trans)ormation ho( can (e sort the data )or relational

and -at "le so!rces?3/. $an (e !se more than one stored proced!re in a mappin&?0. Ho( to (e create data mart?

PROJECT:

1. Ho( man mappin&B dimension ta*lesB >act ta*les and an comple4 mappin&o! did? And (hat is o!r data*ase siDeB ho( )re;!entl loadin& to 8WH?

2. What are the dierent trans)ormations !sed in o!r pro:ect?3. Ho( did o! pop!late the dimensions ta*les?. What are the so!rces o! (ored on?#. Ho( man mappin&s have o! developed on o!r (hole d(h pro:ect?'. 54plain o!r pro:ect O>act ta*leB dimensionsB and data*ase siDe+. Have o! done an comple4 mappin&?,. 54plain details a*o!t 8TM?/. Which ;!alit process ! can approach in !r pro:ect.10. 54plain real time comple4 mappin& (hich ! have done in !r pro:ect.

I%T57I5W Q65STI@% AS58 G 5A%5 I%8IA

1. Ho( m!ch (ill o! rate o!rsel) )or In)ormatica?2. 54plain a*o!t o!r pro:ect.3. 8ierence *et(een Mappin& parameter and Mappin& varia*le.. 54plain a*o!t S$89s in a sin&le line.


21/43

#. I have 100 mappin&s in )older A and 100 mappin&s in )older B m

mana&er ased me to move all the mappin&s in )older A to )older . ho( o!

can do it.'. I have created mappin& parameter or varia*le in one mappin& 54F

aB*BcBd C no( m ;!estion is can I access the mappin& varia*le c and d inanother mappin&B i) es ho(?+. I have t(o records 7a:ashearB S!dhaar in m so!rce (hich is in ro(

)ormat I (ant these records to appear as col!mn )ormat in m tar&et.,. What is P!sh do(n optimiDationB %ormaliDer T7B ava T7B have o!

(ored on it./. 8ierence *et(een In)ormatica + and , versions.10. 8ierence *et(een %ormal and !l load.11. I had started a tas )or e4ec!tionB it m!st tae 10 mins to complete *!t it

is tain& 20 min to completeB ho( can "4 this pro*lem. What sho!ld I do?

12. I have 3 records in ta*le (ith onl names lie iranB 7a:eshB 7a:ashearBho( can I )etch the 3 record that is 7a:ashear.13. When can (e !se havin& cla!se in oracle.1. $an (e !se havin& cla!se (itho!t &ro!p *.1#. Write a ;!er !sin& havin& cla!se.

1'. I am in a ra:a )older. I have 300 "les in that )older o!t o) (hich 200 are o) .doc

and 100 o) .t4tB m ;!estion is I (ant onl the .t4t "les as o!tp!t. What that the

commands o! can !se to )etch onl the .t4t "le O6%Ie*=2011

1. When o! si&n !p o!r development (or?2. Ho( the !ser acceptance testin& &oes thro!&h?3. 8o o! have an speci"c server )or In)ormatica?. $onnected vs !nconnected loo!p.#. I have 3 ta*les5mp ta*leF emp noBname hire date8ept ta*leF dept no B dname ........empNdept F empnoBdeptno.....I (anted the n!m*er o) emploees :oinin& each month.'. I have 10 records in so!rce and I (ant them in tar&et (ith S%@ asS%@

123123123


22/43

lie this ...

+. I (ant the se;!ence no to *e the same (hen I promote it )rom one

environment to other?,. What is re=cache )rom data*ase?

SatamF 20=>e*=20111. What is the dierence *( char and varchar2?2. What is slo(l chan&in& dimension?3. What is parameter "le?. What is the di *( >ilter and 7o!ter tr?#. In A&&re&ator tr i) ! select all &ro!p * port (hat is the o!tp!t? @r i) ! cannot select all &ro!p * port (hat is the o!tp!t?'. What is per)ormance in oiner tr and (hat can ! set?+. What is mdir command?,. What is active and passive tr?/. I have one "le )rom data*ase and another "le )rom -at "le. Ho(

can o! mer&e them?10. What is Incremental a&&re&ation?11. I have one -at "le and one oracle can ! :oin * !sin& SQL override?12. What are the tpes o) -at "les?13. Sorter tr is activepassive?ho(?1. >ilter and ro!ter (hich is *etter?1#. 8ierence *n $@%ST7AI%T T7IEE57?1'. What is dierence *et(een 85$@859 and $AS59?1+. What is cas!al dimension?1,. Witho!t common col!mns can o! :oin 2 ta*les?1/. asic commands in !ni4 Oe&F cpBmdir etcR..20. S5T operators in oracle

21. Ho( can ! s!m the sal )rom a ta*le (hose sal is &reater than 2000in In)ormatica?O(itho!t !sin& >ILT57 S@67$5 Q6ALI>I57 T7.22. What is H5A857 >@@T57?

23. What is 7@W $@6%T in -at "le?

Sierra Atlantics Intervie( Q!estionsF8i *et(een $onnected Loo!p and 6nconnected?

Ho( to "nd the dierences in t(o ta*les in oracle?

Per)ormance t!nin& )or A&&re&ator T) other than Sorted Inp!t?

8i in sorted T) in ersion + and ersion ,?

Ho( o! (ill do the per)ormance t!nin& at session?

Ho( to a "nd *ottle nec in the mappin&? at (hat sta&e?

ersionin& $oncept = Go! have modi"ed a o*:ect and saved?I) m mana&er

(ant to seethe o*:ect stat!s *e)ore savin& a&ainB ho( can he see that?


23/43

I) i &ive o! a mappin& to desi&nB ho( (ill o! decide to !se amon& SQ T)B

:oiner T) or Loo!p T) in the mappin& and (h?

8i *et(een ran and dense ran? 54plain (ith 54ample?

What is P!shdo(n optimiDation?

Ho( (ill o! !pdate the tar&et other than !sin& 6pdate strate& T)?

8o o! no( a*o!t S$82? 54plain?

$an (e !se Persistent cache )or dierent sessions? Ho(?

8i *n S.Q T) and oiner T)?

What is a materialiDed vie(? 8i *et(een vie( and materialiDed vie(?

8i *et(een s!*=;!er and correlated ;!er?

Q!er )or 2nd hi&hest salar?

I) i (ant to load a ile into oracle ho( (ill o! do it?

What is an Inde4?

What is &ran!larit?

>ind command snta4?

8o o! no( a*o!t Sec!recop command?

ill command snta4?

I) i (ant to see the processes that are r!nnin& on !ni4 serverB(hat is the

command?

Gash Technolo&iesF

1 (hat is repositor mi&ration2 ho(man mem*ers (orin& in o!r pro:ect

3 ho( to e4ec!te !ni4 scripts in in)ormaticaPM$M8 so!rce *ased commit tar&et *ased commit# eliminatin& d!plicates )rom -at "le' (hat is the Trans)ormation that (e can !se instead o) L@@!p+ e4plain connected loo!pBdnamic loo!pB!nconnected loo!p, A@7TBST@P/ e4plain ro!terT710 S$8 TGP5211 incremental a&&re&ation


24/43

12 !sa&e o) attri*!te save (or-o( lo& ** r!ns in

(or-o(seditproperties13 ho( man &ro!ps ro!ter (ill have1 is o!r )act ta*le is normaliDed or denormaliDed1# (hat is checinBchec o!t

1' ver*oseBterseBnormal

CEGEDIM:

Oracle Questions:

1. Say about yourself!2. what is the iff between sl an "lsl#

$. %ow can u i&"ro'e the uery "erfor&ance#

(. )hat is the iff between function an "roceure#*. )hat is the iff between tri++er an constraint#

,. %ow can u elete the u"licate recors in a table#

-. I ha'e a table lie//0tablesrc3which ha'in+ only one colu&n an it contains strin+ ata of len+th *4

charters5 now tae one &ore table te&" an insert the ata into te&" table which is

ha'in+ ( colu&ns lie col15col25col$5col(5tha ata for te&" is fro& //0table

13$characters3col1(324characters3col2

213$*characters3col$

$,3*4characters3col(6. %ow a sin+le 'ariable can store &ulti"le 'alues#

7. )hat is the iff between "ri&ary ey an co&"osite ey#14. %ow we use outer "roceure "ara&eter 'alues in inner "roceure an how can we

"ro'ie 'alues to the outer "roceure#

Infor&atica 8 9I; Questions:

1. E


25/43

1(. In how &any ways we can chan+e the "er&ission#

1*. Slee" co&&an

1,. c" co&&an1-. aw co&&an

GASH Technolo&ies O2nd 7o!ndF

1.i) -at "le is a so!rce ho( to &et 1st ro( in to 1tar&et and last ro( into

another tar&et?AnsF!se t(o rantrs or ranA&&rtr.i) need to &et into sin&le Tar&et !se

!nion in last.2.ho( to load !ni;!e records into one tar&etBd!ps into another?3.incremental a&&re&ation incremental loadin&?.ho( o! did incremental loadin&?#.S$82'.ho( (ill o! r!n a (or-o( (itho!t !sin& (or-o( mana&er?+.(hat o! did in !ni4

,.!nion tr/.i) o! have 3 -at "les (ith same str!ct!reBho( (ill o! load into sin&le

tar&et?10.evenBodd scenario.11.(hat are the doc!ments o! have preparedB (hatis the content in them?12.8ense7an 7an

MPHASISF

1.5ect o) pre Bpost s;l to(ards so!rce side?2.in (hich sit!ation preBpost s;l can *e !se)!l )or !s?

3.(hat o! did )or per)ormance t!nin&?.)rom connected loo!p and !nconnected loo!p (hich is *etter )or

per)ormance and (h?

$@LLA57A I%T57I5W Q65STI@%S

1. Tell me a*o!t o!rsel)?2. Tell me a*o!t o!r pro:ect?3. Tell me 2 per)ormances t!nin& o! did in o!r pro:ect?. Ho( can o! load 1st record and last record in o!r pro:ect?#. Ho( can o! send d!plicate records to one tar&et and non=d!p records into

another?'. What ind o) loo!p have ! !sed in o!r pro:ect?+. What ind o) $A$H5 have o! !sed in o!r pro:ect?


26/43

,. Eive me an e4ample on (hich sit!ation o! &o )or dnamic cacheB can o!&ive me an e4ample?

/. What are the $A$H5 are there in In)ormatica?10.Ho( can o! receive m!ltiple ro(s )rom !nconnected loo !p?11.What are the tpes o) Inde4?12.Wh do (e need inde4?

13.I have inde4 de"ned on Tar&et Ta*leB ho( can o! load the data !sin& 6L mode?

1.8ata e4tractin& is )aster or 8ata loadin& is )aster?1#.I have 10 records in m S@67$5 and I have 2 TA7E5TS B I de"ned 2 &ro!ps in

m 7o!ter T7B In m >irst &ro!p I &ave the condition as ne4tNval #.... and inm 2nd &ro!p I &ave the condition as ne4tNval ' .... I $onnected the t(o&ro!ps to t(o tar&ets.... m ;!estion isB the record + (ill -o( to (hich tar&etO Tar&et 1B Tar&et 2 or oth ..?

1'.Write a ;!er to displa d!plicate records?1+.I have a "le a*c.t4tB in the "le I have a line Z hi this is alan[ ho( can o!

)etch the (ord alan9B (hat command do o! !se. Tell me the snta4?1,.What is the *ase command in !ni4?

1/.Have o! done shell scriptin&?20.What have o! done in shell scriptin&?21.What is the dir command in !ni4?22.8ierence W $onnected and 6nconnected Loo!p?23.54plain me the -o( o) o!r pro:ect?

IM I%T57I5W

1. Select empnoB enameB :o*B s!mOsal )rom emp &ro!p * deptno (heredeptno J 10. I) I "re this ;!er (hat is the res!lt?

2. I have 2 records in m So!rce lie man:!\i*m.com and alan\i*m.com .M ;!estion is I (ant the records in m tar&et as \i*m.com and \i*m.comho( can o! achieve it?

3. I have 2 -at "les as m So!rce

>ile A >ile

10 10

10 0

20 #0

30

I (ant m Tar&et as

mailto:[email protected]:[email protected]:[email protected]:[email protected]


27/43


28/43

'(hat is the "le repositor concept (hen (ill ! &o )o it?have ! !sed it in !r pro:ect?

+di *( session side parameters and mappin& side parameters?

,(hat are the mappin& varia*les (hen (ill ! !se them?

/ho( the testin& (ill *e done o!r or&aniDation? is there an revie(?

10(hat is versionin&?

11e4plain a*o!t le)t o!ter :oin (ith one e4ample?

12(hat is con"rmed dimension?&ive me one e4ample?

13(hat is dimension and )act ta*le?

1(hat are the dimension and )act ta*les that ! have in o!r pro:ect?

1#tell me the o!tp!t o) this ;!er select ] )rom empBdept?

1'so!rce Tar&et

a 100 a 100

a 200 a 300

a 300 a '00

* #0 * #0

* 1#0 * 200

Oracle Company Questions asked for Production support roleF

1 Tell me a*o!t o!rsel)?

2 Tell me a*o!t per)ormance t!nin&?

3 While connectin& to repositor i) it )ailsB (hat (ill ! do then?

Ho( (ill o! "nd (here the connection is )ail (hen no*od there to help o! in

this? @ne person is connectin& to the repositor and ! r not a*le to connect?

# Have o! (ored on shell scriptin& and ho( did o! !sed it?


29/43

' Ho( (ill o! provide permissions )or others to (or on o!r "les?

+ Tell me o!r pro:ect architect!re?

HCL Intervie QuestionsF

1. Ho( sorter inp!t increase the per)ormance in A&& T7 ?

2. In loo!p tr (e selected onl col!mns. Ho( it per)orm cache?

3.

So!rce Tar&et

1 1 2 3

2

3

. Ho( did ! "nd n!ll val!es in the "at "le?

#. In (hich sit!ation ! !se re!sa*le se;!ence &enerator?

Xensar Intervie( Q!estionsF

1. Ho( ! did incremental loadin&?

2 Ho( ! did sa ! r record is active or in=active?

3. When ! !ses connect and !n=connected loo!p in tr Osit!ation?

Intervie Questions !rom "ikram $apita Ero!p

1 e4plian o!r pro:ect

2e4plin o!r scd tpe2 mappin& (ith dia&ram and (hat lo&ic o! have !sed

3(hat is the challen&in& (or that o! have done in o!r pro:ect

so!rce

col1 col2 col3


30/43

c1 c2 c3

tar&et

col1

c1

c2

c3

#tell some !ni4 commands that o! have !sed

'in (c command (hat (ill come a)ter (c

,is o!r )eed"le co!nt contains co!nt o) onl records or it incl!des )ooter and

header co!nt also

/ tell *rie- ho( do o! validated the co!nt

10ho( man mem*ers are in o!r team

11ho( man )act ta*les and dimensional ta*les are there

12o! are )ollo(in& (hich schema

13ho( man ta*les o! have pop!lated in !r pro:ect

1in (hich versions o) In)ormatica o! have (ored

1#What is dierence *et((en +. And ,. ersions

1'ho( versionin& is dierent in ,th version

1+do o! no( portionin& in In)ormatica

1,tell ho( partition can improve per)ormance in In)ormatica

1tell an e4ample i) o! have created In)ormatica partition in mappin& or session

Ho( (here and (h it is re;!ired

20ho( o! can create passthro!&h partition (hat is the re;!irement

21(here o! (ill create simple pass partition

22ho( man partitions o! can create ma4im!m )rom so!rce to tar&et

23i) onl so!rce and tar&et is there ho( man partitions (e can create

2#(ill o! desi&n the dimensional ta*le


31/43

2'i) o! (ere &iven one dimension (hat are the thin&s the (ill provide o!

2+(ill o! create mappin& specans %@

2,(hat doc!ments o! (illprepare

2/(h o! created LL8 doc!ments (hat is the re;!irement

30did o! created an test doc!ment

31(hat o! are creatin& in 6T$O!nit test cases

32(hat sched!ler o! are !sin&

33(rite 3rd hi&hest sal ;!er

T$S

17ate o!r sel) in in)ormatica oracle !ni4

2tell some oracle )!nctions o! no(

3 n!lli)

nvl

#coalesce

'cascade

+decode

,case do (ith snta4

/(hat to do i) o! have to )ail the (or-o( i) session is )ailed

10tell some !ni4 commands that o! are a(are o)

11(hat a( command (ill do

12Loo!p Trans)ormationB SQL overrideB LP override

Sntel

1(hat are the steps that o! tae cared (hile per)ormance t!nin&?

2versionin&

3(hat o! did in !nit testin&?ho( o! did !nit testin&?

c!rsorBre) c!rsor


32/43

#constraints

'comple4 :o*

+odsBoltp dierences

,olapBoltp di)erences

/s;l trans)ormation

10connectedB!nconnected lp dierences

11&enerate se;!ence no other than !sin& se;&enT7

12*!l mode

13ho( to disa*le inde4es

1oracle threads

1#have o! (ored on vi editor?ho( to save vi editor?

1'in !ni4 ho( to rename a "le?

1+in !ni4 ho( to co!nt no o) records snta4?

1,in !ni4 ho( to &et top th ro(?

1/e4plainTodateBToNchar )!nctions

H$L

1. e4plain o!r pro:ect

2.

$ol1

iram

%!ll

%!ll

%!ll

iram2

iram3


33/43

I (ant n!ll val!es in one tar&et and not n!ll val!es in another tar&et

3. so!rce

%ame prod!ctid

iram 1

2

3

#

Ta&et

name id1 id2 id3 id id#

viram 1 2 3 #

. (hat are the per)ormance t!nin& steps that o! are a(are o)

#. s!pppose I am loadin& 100 records into m tar&et i) at #1st record the session

&ot )ailed

Then "rst #0 records also sho!ld not *e loaded

Sntel

1. What are challen&in& tas or some thin& special o! did in o!r pro:ect

2 so!rce

$ol1

1

2

3

#

'

+

,


34/43

/

Ta&et contain 3 ta*les

T1

1

2

3

T2

#

'

T3

+

,

/

Ho( (ill o! achieve a*ove

I) the se;!ence is more than / s!ppose 1# then ho(

3. (h s!rro&ate e is !sed? What is s!rro&ate e in o!r mappin&

. in !ncoonected lp ho( can o! e4tract more than one col!mn (rite lo&ic And

(here (e de"ne the name o) the col!mn (hich is res!lt o) concatenation in s;l

override or some(here else

#. so!rce

$ol1 col2 col3 col col#

iram 1 2 3


35/43

Tar&et

$ol1 col2

iram 1

2

3

Tell 2 methodsO1 is normaliDer

'. ho( do o! move o!r code are o! !sin& an third part tool.

1 briefly e


36/43

but i want the loa the first an last recor fro& that fee file5can you e


37/43

col$ col&

$ &

'

*

+ ,

$

$$ $&

& % have my source as below

col$ col&

$ a

$ b

$ c

& d

& e

& f ' p

' s

' r

' t

% want my target as below /

col$ col&

$ abc

& def

'

psr

t

' % have some data of the cricket players and % want the avg score of each player as

( sumof matches0sum of runs) and rank for the each player should be displayed

without using rank transformation "

Example data is given below 1

players matches score

plyr$ mtch$ '

plyr& mtch$ &

plyr' mtch$

plyr mtch$ &*

plyr& mtch& '&


38/43

plyr$ mtch& *

plyr& mtch' &

2arget with avg score and ranks to be given along with the avg .

% have $ records $st

row should go to first target and second row to second and 'rd

row to third and th to $st and so on /3ow will you achive this and explain how this works "

% have linked cols from S4 to the target namely col$ to col and in S4 over ride %

have written 5uery as select col& to col, ! which are the col6s go to target col$ to

col which are linked in mapping or the ones from the S47 4uery and tell me why "* 8an we create Primary key on 9ate"

+ :hat are all the 20;6s that maintain 8ache, :hat did cache option in se5uence generator do and what it means "

:hat did cache in 7


39/43

7an )!nction (ith e4ample

$an (e &et m!ltiple o!tp!ts )rom !nconnected loo!p?

$an (e compare mappin&s o) dierent repositor?

$an (e &et inp!t )rom dierent "les placed in dierent machines or nodesOconsiderin& (e have access )or those nodes?

Ho( se;!ence &enerator (ors as cache T7?

SorterB ran and ro!ter are active or passive?

In (hich order ! (ill !se &ro!p *B havin& and order * cla!se in select statement?

$omple4it ! )aced in !r pro:ect.

What to "nd o!t )rom session lo& (hen its tain& more time?

What ! (ill analDe !sin& de*!&&er re&ardin& per)ormance?

Ho( re;!irements come in !r pro:ectB thro!&h (hom. Go!r role in pro:ect.

8ierence *et S$82 and S$83 tpes.

$oncept and tpes o) partitionin&.

I have ta*le lie *elo(

emp

sno empname &ender deptid

1 ar!n M 10

2 sarath M 1#

3 samp!rna > 20

Pavani > 1#

# Srin! M 30

' %arendra M 20

+ S!ana > 1#

(rite a ;!er in s;l co!nt o) )emale emploes in all depts.

%CH inter'iew uestions:


40/43

1 why sta+in+ is reuire in u r "ro=ect#

2what is confo&e i&ensions#

$ what is e+enerate i&ensions#(in a++re+ator tFr how will u increase the session "erfor&enceF

*e


41/43

1. 54plain A*o!t o!r Pro:ect?2. $an o! &ive dierent "les as Inp!t to the session?

54F Toda I am &ettin& a "le (ith name ZA$[B Tomorro(Z$8[B 8a a)ter

Tomorro( Z$85[. $an o! &ive these "les as Inp!t to thesession?3. $an o! a*le to per)orm insertion and !pdatin& in the sin&le

6pdate strate& Trans)ormation?. Write a Q!er to displa the emploees (hose salar is

&reater than theAv& o) his 8epartment and develop the same as Mappin&.

#. M tar&et havin& Z%[ recordsB I (ant to load "rst 10 recordsand last 10 records?

'. M mappin& havin& !pdate strate& trans)ormation (ith Z%o

e port[B Then (hat happened?

+. Is !nion is active or passive?,. What are the dierent trans)ormations that s!pport sorted

inp!t?/. I) I !nchec the Loo!p cachin& ena*led option in loo!pB

than e4plain the per)ormance and *ehavior?10. I) I per)orm loo!p on the -at "leB (hat are the caches

that loo !p s!pport?

$o&niDantF

1.TGP5S @> I%85 TA5L A $@%TAI%S 10 75$@78S A%8 TAL5 $@%TAI%S 1# 75$@78S B#

75$@78S A75 SIMILA7 I% A

WHAT IS TH5 @P @> 5Q6IBMAST57 85TAILB85TAIL @6T57B>6LL @6T57

A%8 ALS@ W7IT5 TW@ Q657I5S >@7 TH5 SAM5 ?


42/43

.I> A% MAPPI%E IS $@MPL5T5LG T6%58 TILL TA7E5T B WHAT 5LS5 $A% 5 8@%5

@% TA7E5T ?

#.8I>> W TA7E5T L@A8 PLA% A%8 $@%ST7AI%T AS58 L@A8I%E .

'.e4plain a*o!t !r sel)

+.(hat is !r pro:ect e4palin?

,.WHAT IS TH7@6EH P6T.

/.8I>> W +.< A%8 ,.< .

10.ScenarioF=

i have 1 ] ]

] 1 ]

] ] 1

i (ant it to *e 1 1 1 ho( (ill o! achieve this ?

11.(hat is sip level hierarch and r!&&erd hierarch ?

12.ho( ! have implemented hierarch in !r pro:ect ?

13.have ! !sed normaliDer in !r pro:ect and (here did ! !sed it? Ho( a normaliDer

(ors ?

1.(ho (ill assi&n (or to o! and ho( ?

1#.have o! (ored onl on development or have o! done an s!pport (or ?

1'.(hat are mapplets ? (here do (e !se them and (hen do o! !se them ?

1+.have o! !sed an mapplets in !r pro:ect and in (hat sit!ation ?

1,.i have hal) o) m data in one data*ase and hal) o) m data in another data*ase .

This is not :oins ?


43/43

a can i !se them in a sin&le mappin& and load to tar&et? i) es ho( ?

*i) no (hat is !r *est sol!tion )or the same ?

c i) es (h is it es i) no (h (e canUt do it ?

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