SQL INTRODUCTION AND CONCEPTUAL MODELING ONE MARK DUMPS
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8/12/2019 SQL INTRODUCTION AND CONCEPTUAL MODELING ONE MARK DUMPS
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DBMS SKILL TEST UNIT - I
UNIT I (INTRODUCTION AND CONCEPTUAL MODELING)
1. __________________is a collection of interrelated data and a set of programs to access those data.
a) Database Management Systemsb) Databasec) Data storaged) Data systems
Ans: (a)
2. The collection of data is sally referred to as ______________!contains informationrele"ant to an enterprise.
a) Data dictionaryb) Dis# space
c) Databased) $ntity
Ans: (c)
%. The nonprocedral DM&s are also called as
a) Declarati"e DM&sb) 'rocedral DM&sc) Strctred DM&s
Ans: (a)
. The disad"antage of file processing area) Data redndancyb) Data isolationc) ntegrity problemsd) All the abo"e
Ans: (d)
*.____________schema describes the database design at the physical le"el.
a) 'hysicalb) &ogicalc) +oth
d) ,one of the abo"e Ans: (a)
-.____________schema describes the database design at the logical le"el.
a) 'hysical
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DBMS SKILL TEST UNIT - I
b) &ogicalc) +othd) ,one of the abo"e
Ans: (b)
. The schemas at the __________le"el are sometimes called as S/+ S0$MAS.
a) &ogicalb) 'hysicalc) ie3d) All the abo"e
Ans: (c)
4. Application programs are said to e5hibit '6S0A& DATA D$'$,DA,0$ if they do notdependon the ___________________
a) &ogical schema
b) 'hysical schemac) ie3 schemad) ,one of the abo"e
Ans: (b)
7._____________is a collection of conceptal tools for describing data! data relationships!data semantics and consistency constraints.
a) Data baseb) Data modelc) Database langagesd) Data definition
Ans:(b)
18.__________model ses a collection of tables to represent both data and relationships among the data. a) 9elational
b) $ntity relationshipc) b;ect basedd) All the abo"e.
Ans: (a)
11. The ____________model based on perception of real 3orld that consists of collection ofbasic ob;ects called entities and of relationships among these entities.
a) 9elationalb) $ntity relationshipc) b;ect basedd) Semi strctred data model
Ans:(b)
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DBMS SKILL TEST UNIT - I
d) Data definition Ans: (b)
14. Doble ellipse indicates a) Attribte
b) Mlti "aled attribte
c) Deri"ed attribted) Single "aled
Ans: (b)
17. <<<<<<<<<<<<<<<<<<<<<<<<<<<<<< enable an application programmer to constrct forms and reports
a) 9ADb) >ery processor c) Data Dictionaryd) +ffer
Ans: (a)
28. The =ery langage of S>& are________________ a) Declarati"eb) 'rocedralc) ,on procedrald) ,one of the abo"e.
Ans:( c)
21. $ntity is represented by a set of ___________________.a) Tableb) 9elationc) Attribtesd) +oth a and c
Ans: (c)
22._________________represent entity sets.
a) 9ectanglesb) 0irclesc) &inesd) Diamond
Ans: (a)
2. _________________represent attribtes.
a) 9ectanglesb) 0irclesc) &inesd) $llipses
Ans:(d)
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DBMS SKILL TEST UNIT - I
2*._________________represent sets of relationships among member from each ofse"eral entity types.
a) 9ectanglesb) 0irclesc) &ines
d) Diamond Ans: (d)
2-. The ________________model is based ob;ect oriented programming langage paradigm.a) b;ect oriented data model.b) Semi strctred data modelc) $9 modeld) 9elational model
Ans:(a)
2. ________________ is a refinement process for relational databasea) >ery analysis.
b) Trncate processc) ,ormali?ationd) 9AD
Ans:(c)
24._____________________model e5tends the traditional relational model
a) 9elationalb) $ntity relationshipc) b;ect relational datad) All the abo"e.
Ans:(c)
27._________________model permits the specification of data 3here indi"idal data items ofthe same type may ha"e different sets of attribtes.
a) 9elationalb) $ntity relationshipc) b;ect relational datad) Semi strctred data model
Ans:(d)
%8._________________interprets Data Definition &angage statements and records the
definitions in the data dictionary.
a) DD& complier b) DD& interpreter c) +oth a and b
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DBMS SKILL TEST UNIT - I
d) ,one of the abo"e Ans: (b)
%1. _______________ sbsystem pro"ides the interface bet3een the lo3 le"el data storedin the database and the application programs and =eries sbmitted to the system.
a) >ery processor b) Storage manager c) ndicesd) Data dictionary
Ans: (b)
%2. _______________ pro"ides a graphical means of modeling "arios components of asoft3are system.
a) TM&b) @M&
c) /M&d) SM&
Ans: (c)
%%._______________manager allocates the space on dis# storage and the data strctressed to represent information stored on dis#.
a) +fferb) Bilec) Transactiond) Athorisation and integrity
Ans: (b)
%.________________stores Meta data abot the strctre of the database in particlar theschema of the database.
a) Data storageb) Data dictionaryc) Databased) Data files
Ans: (b)
%* .___________________is a collection of operations that perform a single logical fnctionin a database application.
a) +an#ingb) Transactionc) +oth a and b
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DBMS SKILL TEST UNIT - I
d) ,one Ans: (b)
%-. n ______________ architectre the client machine does not contain any direct database calls.
a) T3o tier architectre
b) Three tier architectrec) +oth A and +d) ,one of the abo"e
Ans:(b)
%. n _________________application is partitioned into components that reside at theclient machine.
a) T3o tier architectreb) Three tier architectrec) +oth A and +
d) ,one of the abo"e Ans: (a)
%4. ________________manager is responsible or fetching the data from dis# storageinto main memory! and deciding 3hat data to cache in main memory.
a) +ffer Manager b) Bile Managerc) Transaction Manager d) Athori?ation and ntegrity Manager
Ans: (a)
%7. The phrase Cfor allC is indicated by
a) Select operationb) Di"ision perationc) /nion operationd) Set Difference operation
Ans: (b)
8. hich of the follo3ing are not DD& statements.
a) 0reateb) /pdatec) Alter d) Drop
Ans: (b)
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DBMS SKILL TEST UNIT - I
1._______________ is a statement re=esting the retrie"al of information.
a) >eryb) Select
c) Eoind) Eoin 3ith clase
Ans: (a)
2. Data in a database can be
a) s integratedb) 0an be sharedc) 0an be concrrently accessedd) All the abo"e
Ans: (d)
%. A person 3ho has sch central control o"er the system is called____________
a) D+Ab) ,aF"e /sersc) 'rogrammersd) /sers
Ans: (a)
. The term __________refers loosely to the process of semi atomatically analy?ing the large databases to find sefl patterns.
a) Databaseb) Data 3are hosingc) Data miningd) Data files
Ans: (a)
*._________________can pro"ide fast access to data items.
a) Data filesb) Data bffer c) ndices
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DBMS SKILL TEST UNIT - I
d) $ntities Ans:(c)
-. The $ntity integrity constraint has
a) ,ot nll and chec#
b) 0hec# and nllc) 'rimary and foreignd) /ni=e
Ans: (a)
. A G + (H) is an
a) &eft oter ;oinb) 9ight oter ;oinc) Bll oter ;oind) ter ;oin
Ans: (a)
4._____________lin# attribtes to entity sets and entity sets to relationships.
a) 9ectanglesb) 0irclesc) &inesd) Diamond
Ans:(c)
7. ierarchical data model can implement_____________
a) M:,b) 1:,c) +oth a and bd) ,one of the abo"e
Ans: (b)
*8. ,et3or# database model can implement________________
a) M:,b) 1:,c) +oth a and b
d) ,one of the abo"e Ans:(c)
*1. The ma;or disad"antage of both ,et3or# and ierarchial model is____________
a) 0annot implement M:,
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DBMS SKILL TEST UNIT - I
b) &ac# of strctre dependencyc) &ogical nderstandingd) All the abo"e
Ans: (b)
*2._______________ is an abstraction throgh 3hich relationships are treated as higherle"el entities.
a) enerali?ationb) Aggregationc) Speciali?ationd) SA
Ans: (b)
*%.An entity set that may not ha"e sfficient attribtes to form a primary #ey is termed as
a) ea# entity set
b) Discriminator c) 3ner entity setd) 'rime attribtes
Ans: (a)
*. The attribtes that can be sbdi"ided into sbparts are termed as
a) 0omposite attribteb) Simple attribtec) Single "aled attribte
d) Mlti "aled attribte
Ans: (b)
**._______________ e5press the nmber of entities to 3hich another entity can be associated "iaa relationship set
a) 0onstraintsb) Mapping cardinalitiesc) 0ardinalityd) +oth b and c
Ans: (b)
*-. The ree# letter sigma indicatesa) Select operationb) 'ro;ect operation
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DBMS SKILL TEST UNIT - I
c) /nion operationd) Set Difference operation
Ans: (a)
*. The ree# letter ' indicatesa) Select operation
b) 'ro;ect operationc) /nion operationd) Set Difference operation
Ans: (b)
*4._______________ is an e5tension of the ;oin operation to deal 3ith missing "ales.a) $=i Eoinb) Self Eoinc) ter Eoind) ,on $=i Eoin
Ans:(c)
*7. ( @ ) denotesa) 9ename perationb) 0artesian 'rodct perationc) ,atral Eoind) ter Eoin
Ans: (b)
*7. _______________ retrns the nmber of elements in a relation
a) Distinctb) 0ont
c) Distinct 0ontd) All
Ans: (b)
-8. hich of the follo3ing is not a grop fnction
a) Smb) A"eragec) ropd) Distinct
Ans: (c)
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