SGBD Oracle Hotel franchise database project

7/24/2019 SGBD Oracle Hotel franchise database project

1/23

Academy of Economic Studies

Faculty of Cybernetics, Statistics and Economic Informatics

Database ProjectHotel franchise database

Student:

Nistor Cosmin Dumitru

rou! "#$%, E series


2/23

Project theme

&his database is created to 'i(e to the mana'ement

information about its customers , )hat hotel they often choose,

)hat ser(ices they use most often and )hich are the em!loyees)ho !ro(ide most ser(ices* +ith this information, the hotel

mana'ement can determine )hich are their best em!loyees and

oer them !rimes, most re-uested ser(ices to increase the

number of em!loyees )ho !erform them and the most loyal

customers to oer them discounts and e.tra facilities*

&he database is easy to use and the structure of the table

allo)s the user to easily obtain all this information*

Database description


3/23

&he database is com!osed of / tables accordin' to the ne.t

conce!tual scheme:

Relationship between the tables

0ne client can stay at more hotels and one hotel can ha(e more

customers* &o brea1 the many2to2many relationshi! )e create the

intersection entity named C3IEN&*

0ne hotel can oer more ser(ices and one ser(ice can be oered by

more hotels* &o brea1 the many2to2many relationshi! )e create theintersection entity named SE45ICES6CHEC7*

0ne customer can re-uest more ser(ices and one ser(ice can be

re-uested by more customers* &o brea1 the many2to2many relationshi!

)e create the intersection entity named SE45IN6CHEC7* 0ne em!loyee )or1s at one hotel and one hotel can ha(e more

em!loyees*


4/23

0ne em!loyee is s!eciali8ed in oerin' only one ser(ice, and one

ser(ice can be oered by more em!loyees*

Tables description

&he H0&E3S table contains information about hotels: name,address,

city,!hone number*

C4EA&E &A93E H0&E3Sid6hotel N; C0NS&4AIN&S id6hotel6!1 P4I C0NS&4AIN&S name6hotel6nn CHEC7 name6hotel isnot N;33>,city CHA4%#> C0NS&4AIN& city6nn CHEC7 city is not N;33>,adress6hotel CHA4$#> C0NS&4AIN&S adress6hotel6nn CHEC7 adress6hotelis not N;33>,!hone6number CHA4"$> C0NS&4AIN&S !hone6number6u- ;NI@;E>

&he C;S&0,

!hone6number"$> C0NS&4AIN&S !hone6u- ;NI@;E,

email CHA4=#> C0NS&4AIN& email6u- ;NI@;E>

&he E,

id6ser(ices number=> C0NS&4AIN&S id6ser(ices6f1 4EFE4ENCES

SE45ICESid6ser(ice>,

name CHA4=#> C0NS&4AIN&S namee6nn CHEC7 name is not null>,


5/23

!hone6number number"$> C0NS&4AIN&S !hone6numberb6u- ;NI@;E,

date6em!loyment DA&E>

&he SE45ICES table contains informations about the a(aible ser(ices:name, descri!tion and !rice*

C4EA&E &A93E SE45ICESid6ser(ice number=> C0NS&4AIN&S id6ser(ice6!1 P4I C0NS&4AIN&S name6nn CHEC7 name6ser(ice is not

null>,

descri!tion6ser(ice 5A4CHA4%=#> C0NS&4AIN&S descri!tion6u- ;NI@;E,

!rice number,%> C0NS&4AIN&S !rice6nn CHEC7 !rice is not null>>

&he C3IEN&S table is the intersection table that contains informationsabout )hat customers chec1 in at )hat hotels*

C4EA&E &A93E C3IEN&Scustomer6id number=> C0NS&4AIN&S customerr6id6f1 4EFE4ENCES

C;S&0,

id6hotel number=> C0NS&4AIN&S id6hotelr6f1 4EFE4ENCES

H0&E3Sid6hotel>,

chec1in6number number$> C0NS&4AIN&S chec1in6number6nn CHEC7

chec1in6number is not null>,

date6last6chec1in DA&E>

&he SE45ICES6CHEC7 table is the intersection table that oersinformations about )hat hotel oers )hat ser(ices*

C4EA&E &A93E SE45ICES6CHEC7

id6ser(ice number=> C0NS&4AIN&S id6ser(ice6f1 4EFE4ENCES


id6hotel number=> C0NS&4AIN&S id6hotels6f1 4EFE4ENCES

H0&E3Sid6hotel>,

oer6start DA&E C0NS&4AIN&S oer6start6nn not null>

&he SE45IN6CHEC7 table is the intersection table that oers

informations about )hat client uses certain ser(ices*

C4EA&E &A93E SE45IN6CHEC7

id6ser(ice number=> C0NS&4AIN&S id6ser(icesb6f1 4EFE4ENCES



6/23

customer6id number=> C0NS&4AIN&S customer6id6f1 4EFE4ENCES

C;S&0,

utilisation6no char"#> C0NS&4AIN&S utilisation6no6nn not null>

Data defnition language comands (CREATE, ALTER,DRP!

"> 22Add in the C;S&0

%> 22Create a ne) table H0&E36S&A4S )ith the attributes id6hotel and

stars6no*

C4EA&E &A93E H0&E36S&A4S

id6hotel number=> C0NS&4AIN&S id6hotelst6f1 4EFE4ENCESid6hotel>,

stars6no number%> C0NS&4AIN&S stars6no6nn CHEC7 stars6no is not null>>

=> 22Add in the H0&E3S table the stars6no attribute

A3&E4 &A93E H0&E3S

ADDstars6no number %>>

B> 22Delete the residence6city attribute

A3&E4 &A93E C;S&0 22Delete the H0&E36S&A4S table

D40P &A93E H0&E36S&A4S

> 22Add a null ty!e constraint for the stars6no attribute from the H0&E3S

table

A3&E4 &A93E H0&E3S

ADD C0NS&4AIN& stars6no6nn CHEC7 stars6no is not null>


7/23

/> 22


8/23

insert into H0&E3S (alues"B, Pheonicia Athene,9ucuresti,9ule(ardul

Dacia nr "2=,#%"B=B%=,$>

Populating the $ER"CE$ table using the "#$ERT

command'

insert into SE45ICES (alues",

insert into SE45ICES (aluesB, 5ault, Seif1ee! 'oods for stay !eriod, *$>

insert into SE45ICES (alues$, Child su!er(ision,&a1in' care of the

children,">

insert into SE45ICES (alues, Alarm,+a1in' u! customer on re-uest,#>

insert into SE45ICES (alues/, 4oom ser(ice,Food deli(ery in room,"*$>insert into SE45ICES (alues, Car !ar1in',Par1in' the customers car,B>

insert into SE45ICES (alues, Nonformal acti(ities,uest

entertainment,%#>

insert into SE45ICES (alues"#, Fitness,Acees to the hotels 'ym,/*>

insert into SE45ICES (alues"", Pool,Acces to the hotels !ool, >

Populating the C%$T)ER$ table using the "#$ERT

command'

insert into C;S&0

insert into C;S&0

insert into C;S&0


9/23

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0

insert into C;S&0insert into C;S&0


10/23

Populating the E)PL*EE$ table using the "#$ERT

command'

insert into E


11/23


12/23

insert into E

(alues",",=, &06DA&E"$*#"*%#"=,DD*

insert into C3IEN&Scustomer6id,id6hotel,chec1in6number,date6last6chec1in>

(alues%,B,$, &06DA&E"=*#%*%#"=,DD*


(alues%,"B,, &06DA&E%$*#=*%#"=,DD*


13/23


(alues=,"",%%, &06DA&E%*#$*%#"=,DD*


(alues=,"%,==, &06DA&E=#*#=*%#"=,DD*


(aluesB,"=,B, &06DA&E"B*#*%#"%,DD*


(aluesB,"%,=, &06DA&E%*#*%#"%,DD*


(alues$,"",B, &06DA&E=#*""*%#"",DD*


(alues$,=,$, &06DA&E#$*"%*%#"#,DD*


(alues,B,, &06DA&E"B*#*%#"=,DD*

insert into C3IEN&Scustomer6id,id6hotel,chec1in6number,date6last6chec1in>(alues,$,, &06DA&E"%*"#*%#"",DD*


(alues/,,, &06DA&E#*#*%#"",DD*


(alues/,/,/, &06DA&E#*#$*%#"%,DD*


(alues,,, &06DA&E"$*#*%#"%,DD*


(alues,,%#, &06DA&E%/*#/*%#"",DD*


(alues,"#,"#, &06DA&E=#*#*%#"#,DD*


(alues"#,"","=, &06DA&E"B*#*%#"=,DD*


(alues"","%,"$, &06DA&E%=*#/*%#"=,DD*


(alues"%,"=,"/, &06DA&E%B*#*%#"=,DD*


(alues"=,"B,%/, &06DA&E"/*#*%#"",DD*insert into C3IEN&Scustomer6id,id6hotel,chec1in6number,date6last6chec1in>

(alues",",, &06DA&E%B*#*%#"#,DD*


(alues"$,=,, &06DA&E=#*""*%#"",DD*


(alues",=,, &06DA&E%$*#*%#"",DD*


14/23


(alues"/,%,$, &06DA&E"B*"%*%#"%,DD*


(alues",B,, &06DA&E=#*#"*%#"#,DD*


(alues",,%, &06DA&E#%*#%*%#"=,DD*


(alues%#,,=, &06DA&E%B*#B*%#"=,DD*


(alues%",,"#, &06DA&E#%*#"*%#"%,DD*


(alues%%,",, &06DA&E#=*#=*%#"#,DD*


(alues%=,","", &06DA&E#=*#%*%#"",DD*

insert into C3IEN&Scustomer6id,id6hotel,chec1in6number,date6last6chec1in>(alues%=,","B, &06DA&E#=*#B*%#"",DD*


(alues%$,",/, &06DA&E#$*#B*%#"#,DD*


(alues%$,",, &06DA&E#*#*%#"%,DD*


(alues"",",B, &06DA&E"/*#/*%#"=,DD*


(alues",",$, &06DA&E"*#*%#"=,DD*


(alues"/,",, &06DA&E%$*"#*%#"%,DD*


(alues",",/, &06DA&E%%*""*%#"",DD*

Populating the $ER"#+C&EC- table with the "#$ERT

command'

insert into SE45ICES6CHEC7id6ser(ice,id6hotel,oer6start> (alues

",",&06DA&E%%*""*%#"",DD*

insert into SE45ICES6CHEC7 id6ser(ice,id6hotel,oer6start> (alues

",,&06DA&E#"*#"*%##,DD*


%,",&06DA&E#%*#"*%##,DD*


%,B,&06DA&E#=*#%*%#"#,DD*


15/23


=,$,&06DA&E#B*#=*%#"#,DD*


=,/,&06DA&E#%*#%*%##,DD*


B,,&06DA&E#=*#=*%##,DD*


B,,&06DA&E"B*#B*%#"",DD*


$,"#,&06DA&E"$*#B*%#"",DD*


$,"B,&06DA&E#*#$*%#"#,DD*


,",&06DA&E#/*#$*%#"",DD*

insert into SE45ICES6CHEC7 id6ser(ice,id6hotel,oer6start> (alues,%,&06DA&E#*#/*%#"",DD*


/,=,&06DA&E#/*#/*%#"#,DD*


/,B,&06DA&E#*#*%##,DD*


,$,&06DA&E""*#*%##,DD*


,,&06DA&E"%*#*%#"%,DD*


,/,&06DA&E"$*#*%#"=,DD*


,,&06DA&E#$*"#*%#"",DD*


"#,,&06DA&E%=*"#*%##,DD*


"#,"#,&06DA&E#%*""*%#"%,DD*


"","",&06DA&E#"*"%*%##,DD*insert into SE45ICES6CHEC7 id6ser(ice,id6hotel,oer6start> (alues

"","",&06DA&E%=*"%*%#"",DD*


","",&06DA&E#B*#"*%##,DD*


=,"",&06DA&E#/*#"*%##,DD*


16/23


$,"=,&06DA&E#*#B*%##,DD*


%,"%,&06DA&E%%*#%*%#"",DD*


B,"",&06DA&E#*#/*%#"%,DD*


,"",&06DA&E#=*#*%#"#,DD*


/,"%,&06DA&E#B*#*%##,DD*

Populating the $ER"#+C&EC- table with the "#$ERT

command'

insert into SE45IN6CHEC7customer6id, id6ser(ice,utilisation6no>

(alues",",B>


(alues",%,$>


(alues%,B,>


(alues%,=,"%>insert into SE45IN6CHEC7customer6id, id6ser(ice,utilisation6no>

(alues=,$,/>


(alues=,,"">


(aluesB,/,%>


(aluesB,,=>


(alues$,,>


(alues$,"#,"B>


(alues,"",%=>


(alues,","">


17/23


(alues/,=,"/>


(alues/,$,%%>


(alues,/,%$>


(alues,,>


(alues,"",>


(alues,%,/>


(alues"#,B,%=>

insert into SE45IN6CHEC7customer6id, id6ser(ice,utilisation6no>(alues"#,,$>


(alues"",,>


(alues"","#,>


(alues"%,",/>


(alues"%,B,>


(alues"=,/,"">


(alues"=,"#,"$>


(alues"$,%,"B>


(alues"$,$,/>


(alues",,>insert into SE45IN6CHEC7customer6id, id6ser(ice,utilisation6no>

(alues","",=>


(alues"/,=,>


(alues"/,,"=>


18/23


(alues",,"%>


(alues",","$>


(alues",$,"#>


(alues",,%#>


(alues%#,%,%B>


(alues%#,,"=>


(alues%","#,"$>

insert into SE45IN6CHEC7customer6id, id6ser(ice,utilisation6no>(alues%",=,"/>


(alues%%,/,/>


(alues%%,"",>


(alues%=,=,"#>


(alues%=,$,"=>


(alues%$,,%">


(alues%$,/,B>

E.amples o/ interogations

%sing aggregate /unctions, +R%P 0*, &A"#+

22Dis!lay the name of the customer )ho consumed ser(ices in

(alue of at least %$#


19/23

select c*customer6name, sumto6numberr*utilisation6no>Js*!rice>

from customers c, ser(in'6chec1 r, ser(ices s

)here s*id6ser(iceKr*id6ser(ice and c*customer6idKr*customer6id

'rou! by c*customer6name

ha(in' sumto6numberr*utilisation6no>Js*!rice>L%$#

22Dis!lay the name of the customers and the total number of ser(ices

solicitations if it )as 'reater than "B

select c*customer6name, sumto6numberr*utilisation6no>> as M;tilisation

timesM

from customers c, ser(in'6chec1 r, ser(ices s

)here s*id6ser(iceKr*id6ser(ice and c*customer6idKr*customer6id'rou! by c*customer6name

ha(in' sumto6numberr*utilisation6no>>L"B

%sing %#"#, )"#%$, "#TER$ECT

11Dis!lay the name of the clients )hich chec1ed in in Sibiu and of

those chec1ed in in 0radea usin' ;NI0N o!erator

select c*customer6name

from customers c, hotels h, clients r

)here c*customer6idKr*customer6id and r*id6hotelKh*id6hotel and

h*cityKSibiuunion

select c*customer6name

from customers c, hotels h, clients r

)here c*customer6idKr*customer6id and r*id6hotelKh*id6hotel and

h*cityK0radea


20/23

22Dis!lay all the em!loyees that )or1 in 9ucuresti e.ce!t those

)or1in' at the Phoenihia %##

%sing the CA$E statement

22Increase the !rice of the


21/23

select name6ser(ice, case )hen name6ser(iceK


22/23

create se-uence se-uence6sstart )ith "increment by "

ma.(alue $$nocycle

Jdelete it afterdro! se-uence se-uence6s

&ierarchical 4ueries (C##ECT 0*, PR"R,LEEL, $*$C##ECT0*PAT&!

22Create the HIE4A4CH? table )ith the attributes id6em!loyee,id6mana'er

C4EA&E &A93E HIE4A4CH?id6em!loyee number=> constraints id6em!loyee6!l P4I,id6mana'er number=>>

22Insert (alues in the HIE4A4CH? table

insert into HIE4A4CH? (alues"#",insert into HIE4A4CH? (alues"#%,Preda Alin,"#">insert into HIE4A4CH? (alues"#=,Po!a Emilia,"#%>insert into HIE4A4CH? (alues"#B,insert into HIE4A4CH? (alues""",Chiaburu Ale.,"#$>insert into HIE4A4CH? (alues""%,Farmache Ana,"#B>insert into HIE4A4CH? (alues""=,Predoiu

22Dis!lay the em!loyees subordinated to the root

select id6em!loyee, name, id6mana'er


23/23

from HIE4A4CH?connect by !rior id6em!loyeeKid6mana'erstart )ith u!!ername>K

SGBD Oracle Hotel franchise database project

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