Final Exam Sem 1 Oracle

8/9/2019 Final Exam Sem 1 Oracle

1/78

Semester 1 Final Term Exam covers Sections 11-18 of Database Design.

Section 12

1. One-to-One relationships are transformed into hec! onstraints in the tables created at either end of

that relationship. Tr"e or False# $ar! for %evie&

'1( )oints

Tr"e

False '*(

orrect

2. The Oracle Database can implement a man+ to man+ relationship. ,o" simpl+ create t&o foreign !e+s

bet&een the t&o tables. Tr"e or False# $ar! for %evie&

'1( )oints

Tr"e

False '*(

ncorrect. %efer to Section 12

. /h+ &o"ld this table name 0OT &or! in an Oracle database# this+earendnext+ear $ar! for %evie&

'1( )oints

Table names m"st begin &ith an alphabetic character

Too long

The )l"s sign is not allo&ed in ob3ect names '*(

0one of the above


4. n a ph+sical data model5 an attrib"te becomes a . $ar! for %evie&

'1( )oints

Table

Foreign 6e+

onstraint

ol"mn '*(


2/78

orrect

7. n a ph+sical data model5 a relationship is represented as a combination of 'hoose T&o( $ar! for

%evie&

'1( )oints

'hoose all correct ans&ers(

ol"mn

)rimar+ 6e+ or 9ni:"e 6e+ '*(

hec! onstraint or 9ni:"e 6e+

Foreign 6e+ '*(


;. dentif+ all of the incorrect statements that complete this sentence < primar+ !e+ is 'hoose three(

$ar! for %evie&

'1( )oints


< single col"mn that "ni:"el+ identifies each col"mn in a table '*(

One or more col"mns in a table that "ni:"el+ identifies each ro& in that table

< set of col"mns in one table that "ni:"el+ identifies each ro& in another table '*(

Onl+ one col"mn that m"st be n"ll '*(


=. The explanation belo& is a col"mn integrit+ constraint

< col"mn m"st contain onl+ val"es consistent &ith the defined data format of the col"mn. Tr"e or False#

$ar! for %evie&

'1( )oints

Tr"e '*(

False

orrect

8. Foreign !e+s m"st be n"ll. Tr"e or False# $ar! for %evie&

'1( )oints


3/78

Tr"e

False '*(

orrect

>. The explanation belo& is a 9ser Defined integrit+ r"le and m"st therefore be man"all+ coded5 the

Database cannot enforce this r"le a"tomaticall+

< primar+ !e+ m"st be "ni:"e5 and no part of the primar+ !e+ can be n"ll. Tr"e or False#

$ar! for %evie&

'1( )oints

Tr"e

False '*(


1?. /hen translating an arc relationship to a ph+sical design5 +o" m"st t"rn the arc relationships into

foreign !e+s.


4/78

@"siness f"nctionalit+ and b"siness r"les5 access paths and fre:"enc+ of access are all ver+ different

bet&een s"bt+pes. '*(

$ost of the relationships are at the s"pert+pe level


Section 1

12. The cla"se can be added to a SEAET statement to ret"rn a s"bset of the data. $ar! for

%evie&

'1( )oints


5/78

'1( )oints

SEAET *

F%O$ alb"ms

'*(

SEAET albtitle5 albartist5 albdates

F%O$ alb"m

SEAET albtitle5 albartist5 albdates

F%O$ alb"ms

SEAET albtitle albartist albdate

F%O$ alb"ms

ncorrect. See Section 1;

17. n a SEAET cla"se5 &hat is the res"lt of 2 * 2# $ar! for %evie&'1( )oints

;

8 '*(

1?

1

orrect.

1;. /hich SA !e+&ord specifies that an alias &ill be s"bstit"ted for a col"mn name in the o"tp"t of a SA

:"er+# $ar! for %evie&

'1( )oints


6/78

Goining onl+

Selection onl+

)ro3ection onl+ '*(

)ro3ection and Selection


18. /hen listing col"mns in the SEAET list5 &hat sho"ld +o" "se to separate the col"mns# $ar! for %evie&

'1( )oints

ommas '*(

Semicolons

Dashes

9nderscores

orrect.

1>. n &hich cla"se of a SEAET statement &o"ld +o" specif+ the name of the table or tables being :"eried#

$ar! for %evie&

'1( )oints

The F%O$ cla"se '*(

The SEAET cla"se

The /BE%E cla"se


7/78


)age 2 of 7

Test Final Exam Semester 1

%evie& +o"r ans&ers5 feedbac!5 and :"estion scores belo&.


8/78

Each


9/78

ncorrect

27. The E$)AO,EES table incl"des these col"mns

E$)AO,EED 09$@E%'4( 0OT 09AA

A


10/78

2=. Eval"ate this SEAET statement

SEAET *

F%O$ emplo+ees

/BE%E departmentid 0'1?5 2?5 ?(


11/78

/BE%E emplo+eeid L 1=;

SEAET lastname5 emplo+eeid

F%O$ emplo+ees

/BE%E emplo+eeid e:"als 1=;

orrect.

2>. Eval"ate this SEAET statement

SEAET lastname5 firstname5 salar+

F%O$ emplo+ees

Bo& &ill the heading for the S


12/78

Section 1=

1. /hich comparison operator searches for a specified character pattern# $ar! for %evie&

'1( )oints

0

A6E '*(

@ET/EE0R


13/78

< comparison condition

< constant

orrect.

7. /here in a SA statement can +o" not "se arithmetic operators# $ar! for %evie&

'1( )oints

SEAET

F%O$ '*(

/BE%E

0O0E

ncorrect. See Section 1=.

;. /hich cla"se &o"ld +o" incl"de in a SEAET statement to restrict the data ret"rned to onl+ the

emplo+ees in department 1?# $ar! for %evie&

'1( )oints

/BE%E '*(

F%O$

SEAET

S

orrect.

Section 18

=. /hich of the follo&ing best describes the meaning of the A6E operator# $ar! for %evie&

'1( )oints

Displa+ ro&s based on a range of val"es.

To test for val"es in a list.

$atch a character pattern. '*(

To find 0"ll val"es.

ncorrect. See Section 18


14/78

8. The O%DE% @, cla"se al&a+s comes last. Tr"e or False# $ar! for %evie&

'1( )oints

Tr"e '*(

False

orrect.

>. /hich of the follo&ing is T%9E regarding the logical


15/78

'1( )oints

VL(W

VJW

VKLW

VJLW '*(

orrect.

42. ,o" need to change the defa"lt sort order of the O%DE% @, cla"se so that the data is displa+ed in

reverse alphabetical order. /hich !e+&ord sho"ld +o" incl"de in the O%DE% @, cla"se# $ar! for %evie&

'1( )oints

DES '*(


16/78

'1( )oints

SEAET prod"ctid5 prod"ctname

F%O$ prod"cts

/BE%E price JK

'*(


F%O$ prod"cts

B


17/78

/BE%E salar+ K ????


18/78


19/78

orrect.

7?. Eval"ate this SA statement

SEAET e.emplo+eeid5 e.lastname5 e.firstname5 m.managerid

F%O$ emplo+ees e5 emplo+ees m

O%DE% @, e.lastname5 e.firstname

/BE%E e.emplo+eeid L m.managerid

This statement fails &hen exec"ted. /hich change &ill correct the problem#

$ar! for %evie&

'1( )oints

%eorder the cla"ses in the :"er+. '*(

%emove the table aliases in the /BE%E cla"se.

%emove the table aliases in the O%DE% @, cla"se.

ncl"de a B


20/78

2. n a ph+sical data model5 an attrib"te becomes a . $ar! for %evie&

'1( )oints

Table

Foreign 6e+

onstraint

ol"mn '*(

orrect

. /h+ &o"ld this table name 0OT &or! in an Oracle database# this+earendnext+ear $ar! for %evie&

'1( )oints


Too long


0one of the above

orrect

4. /hen mapping s"pert+pes5 relationships at the s"pert+pe level transform as "s"al. %elationships at

s"bt+pe level are implemented as foreign !e+s5 b"t the foreign !e+ col"mns all become mandator+. Tr"e or

False# $ar! for %evie&

'1( )oints

Tr"e

False '*(

orrect

7. /hich of the follo&ing are reasons &h+ +o" sho"ld consider "sing a S"bt+pe mplementation# $ar! for

%evie&

'1( )oints

The res"lting table &ill reside in a single database and be "sed b+ 3"st O0E "ser.

/hen the common access paths for the s"pert+pes are different.

@"siness f"nctionalit+ and b"siness r"les5 access paths and fre:"enc+ of access are all ver+ different

bet&een s"bt+pes. '*(


21/78

$ost of the relationships are at the s"pert+pe level

orrect

;. The Oracle Database can implement a man+ to man+ relationship. ,o" simpl+ create t&o foreign !e+s

bet&een the t&o tables. Tr"e or False# $ar! for %evie&

'1( )oints

Tr"e

False '*(

orrect

=. t is possible to implement non-transferabilit+ via a simple Foreign 6e+ %elationship. Tr"e or False# $ar!

for %evie&

'1( )oints

Tr"e

False '*(


8. The text belo& is an example of &hat constraint t+pe

The val"e in the managerid col"mn of the E$)AO,EES table m"st match a val"e in the emplo+eeid

col"mn in the E$)AO,EES table.

$ar! for %evie&

'1( )oints

Entit+ integrit+

9ser-defined integrit+

ol"mn integrit+

%eferential integrit+ '*(

orrect

>. Entit+ integrit+ refers to $ar! for %evie&

'1( )oints

Tables al&a+s containing text data

Tables al&a+s containing n"meric data


22/78

ol"mns having )rimar+ 6e+s5 Foreign 6e+s5 9ni:"e 6e+s and hec! constraints defined in the database.

Tables having )rimar+ 6e+s5 Foreign 6e+s5 9ni:"e 6e+s and hec! constraints defined in the database. '*(


1?. dentif+ all of the incorrect statements that complete this sentence < primar+ !e+ is 'hoose three(

$ar! for %evie&

'1( )oints


< single col"mn that "ni:"el+ identifies each col"mn in a table '*(

One or more col"mns in a table that "ni:"el+ identifies each ro& in that table

< set of col"mns in one table that "ni:"el+ identifies each ro& in another table '*(

Onl+ one col"mn that m"st be n"ll '*(


)age 1 of 7




23/78

Tr"e

False '*(

orrect.

1. /hat command can be "sed to create a ne& ro& in a table in the database# $ar! for %evie&

'1( )oints

%E


24/78

1;. The SEAET statement retrieves information from the database. n a SEAET statement5 +o" can do all

of the follo&ing EHE)T $ar! for %evie&

'1( )oints

)ro3ection

$anip"lation '*(

Goining

Selection

orrect.

1=. /hen listing col"mns in the SEAET list5 &hat sho"ld +o" "se to separate the col"mns# $ar! for %evie&

'1( )oints

ommas '*(

Semicolons

Dashes

9nderscores

orrect.

18. n the defa"lt order of precedence5 &hich operator &o"ld be eval"ated first# $ar! for %evie&

'1( )oints

S"btractions

$"ltiplications '*(

. /hen +o" "se the SEAET cla"se to list one or t&o col"mns onl+ from a table and no /BE%E cla"se5

&hich SA capabilit+ is "sed# $ar! for %evie&

'1( )oints

Goining onl+

Selection onl+


25/78

)ro3ection onl+ '*(

)ro3ection and Selection


2?. n &hich cla"se of a SEAET statement &o"ld +o" specif+ the name of the table or tables being :"eried#

$ar! for %evie&

'1( )oints

The F%O$ cla"se '*(

The SEAET cla"se

The /BE%E cla"se


26/78

Section 1=

2. f the E$)AO,EES table has the follo&ing col"mns5 and +o" &ant to &rite a SEAET statement to ret"rn

the emplo+ee last name and department n"mber for emplo+ee n"mber 1=;5 &hich of the follo&ing SA

statements sho"ld +o" "se#

0ame T+pe Aength

E$)AO,EED 09$@E% 22

F%ST0


27/78

*

orrect. See Section 1=

27. Eval"ate this SEAET statement


F%O$ emplo+ees

Bo& &ill the heading for the S


28/78

/BE%E lastname A6E Sm


28. The ST9DE0T table contains these col"mns

ST9DE0TD 09$@E%'1?( )rimar+ 6e+

A


29/78

The first statement &ill 0OT displa+ val"es from all of the ro&s in the E$)AO,EES table

The second statement co"ld displa+ a "ni:"e combination of the E$)AO,EED5 $


30/78

A6E

@ET/EE0R


31/78

'1( )oints

QL '*(

U

orrect.

Section 18

=. Eval"ate this SA statement

SEAET e.emplo+eeid5 e.lastname5 e.firstname5 m.managerid

F%O$ emplo+ees e5 emplo+ees m

O%DE% @, e.lastname5 e.firstname/BE%E e.emplo+eeid L m.managerid

This statement fails &hen exec"ted. /hich change &ill correct the problem#

$ar! for %evie&

'1( )oints

%eorder the cla"ses in the :"er+. '*(

%emove the table aliases in the /BE%E cla"se.

%emove the table aliases in the O%DE% @, cla"se.

ncl"de a B


32/78

SEAET lastname5 firstname5 teamid5 salar+

F%O$ pla+ers

/BE%E 'salar+ K 27??? O% salar+ JK


33/78

orrect.

)age 4 of 7




34/78

orrect.

44. /hich statement abo"t the O%DE% @, cla"se is tr"e# $ar! for %evie&

'1( )oints

,o" can "se a col"mn alias in the O%DE% @, cla"se. '*(

The defa"lt sort order of the O%DE% @, cla"se is descending.

The O%DE% @, cla"se can onl+ contain col"mns that are incl"ded in the SEAET list.

The O%DE% @, cla"se sho"ld immediatel+ precede the F%O$ cla"se in a SEAET statement

orrect.

47. ,o" :"er+ the database &ith this SA statement

SEAET priceF%O$ prod"cts

/BE%E price 0'15 275 7?5 27?(


35/78

$ar! for %evie&

'1( )oints

The res"lts are sorted n"mericall+ onl+.

The res"lts are sorted alphabeticall+ onl+.

The res"lts are sorted n"mericall+ and then alphabeticall+.

The res"lts are sorted alphabeticall+ and then n"mericall+. '*(

orrect.

4=. Eval"ate this SEAET statement

SEAET lastname5 firstname5 email

F%O$ emplo+ees

O%DE% @, email

f the E$


36/78

2??5 2?15 2?25 2?5 2?45 2?75 2?;

orrect.

4>. /hich SEAET statement sho"ld +o" "se to limit the displa+ of prod"ct information to those prod"cts

&ith a price of less than 7?# $ar! for %evie&

'1( )oints


F%O$ prod"cts

/BE%E price JK

'*(


F%O$ prod"cts

B


37/78

@ET/EE0 R . t &as filed "nder Final Exam and &as tagged &ith %esponses

1.

hoi

Section 12

1. n a ph+sical data model5 a relationship is represented as a combination of 'hoose T&o( $ar!eren voor

na!i3!en

'1( )"nten

'6ies alle goede ant&oorden.(

ol"mn

)rimar+ 6e+ or 9ni:"e 6e+ '*(

hec! onstraint or 9ni:"e 6e+

Foreign 6e+ '*(

orrect

2. n an Oracle database5 &h+ &o"ld 1T


38/78

. The transformation from an E% diagram to a ph+sical design involves changing terminolog+. )rimar+

9ni:"e dentifiers in the E% diagram become and relationships become .

$ar!eren voor na!i3!en

'1( )"nten

Foreign !e+s5 )rimar+ !e+s

)rimar+ !e+s5 Foreign !e+s '*(

Foreign !e+s5 mandator+ b"siness r"les

9ni:"e 6e+s5 )rimar+ !e+s


4. The text belo& is an example of &hat constraint t+pe

The val"e in the managerid col"mn of the E$)AO,EES table m"st match a val"e in the emplo+eeid

col"mn in the E$)AO,EES table. $ar!eren voor na!i3!en'1( )"nten

Entit+ integrit+

9ser-defined integrit+

ol"mn integrit+

%eferential integrit+ '*(


7. < table m"st have at least one candidate !e+5 as &ell as its primar+ !e+. Tr"e or False# $ar!eren voor

na!i3!en

'1( )"nten

/aar

0iet &aar '*(


;. The explanation belo& is a 9ser Defined integrit+ r"le and m"st therefore be man"all+ coded5 theDatabase cannot enforce this r"le a"tomaticall+

< primar+ !e+ m"st be "ni:"e5 and no part of the primar+ !e+ can be n"ll. Tr"e or False# $ar!eren voor

na!i3!en

'1( )"nten

/aar


39/78

0iet &aar '*(


=. The explanation belo& is a col"mn integrit+ constraint



'1( )"nten

/aar '*(

0iet &aar

orrect

8. /hat do +o" create &hen +o" transform a man+ to man+ relationship from +o"r E% diagram into a

ph+sical design# $ar!eren voor na!i3!en

'1( )"nten

9ni:"e !e+ constraints

ntersection entit+

ntersection table '*(

T&o tables &ith Foreign !e+ constraints bet&een them


>. The Oracle Database can implement a man+ to man+ relationship. ,o" simpl+ create t&o foreign !e+s

bet&een the t&o tables. Tr"e or False# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(


1?. /hen mapping s"pert+pes5 relationships at the s"pert+pe level transform as "s"al. %elationships at

s"bt+pe level are implemented as foreign !e+s5 b"t the foreign !e+ col"mns all become mandator+. Tr"e orFalse# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(


40/78

orrect

Section 12

11. /hen translating an arc relationship to a ph+sical design5 +o" m"st t"rn the arc relationships into

foreign !e+s.


41/78

'1( )"nten

/aar

0iet &aar '*(


17. ,o" cannot "se comp"ters "nless +o" completel+ "nderstand exactl+ ho& the+ &or!. Tr"e or False#


'1( )"nten

/aar

0iet &aar '*(

orrect.

1;. /hen listing col"mns in the SEAET list5 &hat sho"ld +o" "se to separate the col"mns# $ar!eren voor

na!i3!en

'1( )"nten

ommas '*(

Semicolons

Dashes

9nderscores

orrect.

1=. ,o" :"er+ the database &ith this SA statement

SEAET * F%O$ st"dents

/h+ &o"ld +o" "se this statement# $ar!eren voor na!i3!en

'1( )"nten

To insert data

To vie& data '*(

To displa+ the table str"ct"re

To delete data



42/78

18. n &hich cla"se of a SEAET statement &o"ld +o" specif+ the name of the table or tables being :"eried#


'1( )"nten

The F%O$ cla"se '*(

The SEAET cla"se

The /BE%E cla"se

. /hich statement best describes ho& arithmetic expressions are handled# $ar!eren voor na!i3!en

'1( )"nten


43/78

/hich SA SEAET statement capabilities are achieved &hen this statement is exec"ted# $ar!eren voor

na!i3!en

'1( )"nten

Selection onl+ '*(

)ro3ection onl+

Selection and pro3ection onl+

)ro3ection5 selection and 3oining

orrect.

22. f a SA statement ret"rns data from t&o or more tables5 &hich SA capabilit+ is being "sed# $ar!eren

voor na!i3!en

'1( )"nten

Selection

)ro3ection

Goining '*(

nsertion


Section 1=

2. ,o" need to displa+ emplo+ees &hose salar+ is in the range of ???? and 7????. /hich comparison

operator sho"ld +o" "se# $ar!eren voor na!i3!en

'1( )"nten

0

A6E

@ET/EE0R


44/78

'*(

Y


27. ,o" need to displa+ all the ro&s in the E$)AO,EES table that contain a n"ll val"e in the

DE)


45/78

ncorrect. See Section 1=

28. /hich cla"se &o"ld +o" incl"de in a SEAET statement to restrict the data ret"rned to onl+ the

emplo+ees in department 1?# $ar!eren voor na!i3!en

'1( )"nten

/BE%E '*(

F%O$

SEAET

S

orrect.

2>. The E$)AO,EES table incl"des these col"mns

E$)AO,EED 09$@E%'4( 0OT 09AAA


46/78


4. ,o" need &rite a SEAET statement that sho"ld onl+ ret"rn ro&s that contain 45 4;5 or 48 for the

DE)


47/78


Section 18

=. The )A>>.>> ??

O%DE% @, lastname5 firstname

'*(

SEAET lastname5 firstname

F%O$ pla+ers

/BE%E positionid K ;>??



F%O$ pla+ers

/BE%E positionid L ;>??

O%DE% @, lastname DES5 firstname

orrect.

>. /hich statement abo"t the logical operators is tr"e# $ar!eren voor na!i3!en

'1( )"nten

The order of operator precedence is


48/78

4?. /hich of the follo&ing is T%9E regarding the logical


49/78

1?

27? '*(

1??

ncorrectQ See Section 18.

48. Eval"ate this SA statement

SEAET prod"ctid5 prod"ctname5 price

F%O$ prod"cts

O%DE% @, prod"ctname5 price

/hat occ"rs &hen the statement is exec"ted# $ar!eren voor na!i3!en

'1( )"nten

The res"lts are sorted n"mericall+ onl+.

The res"lts are sorted alphabeticall+ onl+.

The res"lts are sorted n"mericall+ and then alphabeticall+.

The res"lts are sorted alphabeticall+ and then n"mericall+. '*(

orrect.

4>. /hat val"e &ill the follo&ing SA statement ret"rn#

SEAET emplo+eeid

F%O$ emplo+ees

/BE%E emplo+eeid @ET/EE0 1??


50/78

O% email S 0OT 09AA

/hich statement is tr"e# $ar!eren voor na!i3!en

'1( )"nten

The O% condition &ill be eval"ated before the


51/78

orrect

4. The Oracle Database can implement a man+ to man+ relationship. ,o" simpl+ create t&o foreign !e+s

bet&een the t&o tables. Tr"e or False# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(

orrect

7. The explanation belo& is a col"mn integrit+ constraint



'1( )"nten

/aar '*(

0iet &aar

orrect

;. < foreign !e+ cannot refer to a primar+ !e+ in the same table. Tr"e or False# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(


=. The text belo& is an example of &hat constraint t+pe

f the n"mber of @OO6S lent to a @O%%O/E% in the A@%


52/78

8. < table m"st have a primar+ !e+. Tr"e or False# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(


>. /h+ &o"ld this table name 0OT &or! in an Oracle database# this+earendnext+ear $ar!eren voor

na!i3!en

'1( )"nten


Too long


0one of the above

orrect

1?. n a ph+sical data model5 an attrib"te becomes a . $ar!eren voor na!i3!en

'1( )"nten

Table

Foreign 6e+

onstraint

ol"mn '*(


Section 12



53/78

T


54/78

/aar

0iet &aar '*(

orrect.

1;. ,o" :"er+ the database &ith this SA statement

SEAET *

F%O$ transaction

/BE%E prod"ctid L 47;>

/hich SA SEAET statement capabilities are achieved &hen this statement is exec"ted# $ar!eren voor

na!i3!en

'1( )"nten

Selection onl+ '*(

)ro3ection onl+

Selection and pro3ection onl+

)ro3ection5 selection and 3oining


1=. ,o" :"er+ the database &ith this SA statement

SEAET * F%O$ st"dents

/h+ &o"ld +o" "se this statement# $ar!eren voor na!i3!en

'1( )"nten

To insert data

To vie& data '*(

To displa+ the table str"ct"re

To delete data

orrect.

18. n a SA statement5 &hich cla"se specifies one or more col"mns to be ret"rned b+ the :"er+# $ar!eren

voor na!i3!en'1( )"nten

SEAET '*(

F%O$

/BE%E


55/78


56/78

22. n the defa"lt order of precedence5 &hich operator &o"ld be eval"ated first# $ar!eren voor na!i3!en

'1( )"nten

S"btractions

$"ltiplications '*(


57/78

F%O$ '*(

/BE%E

0O0E


2;. /hich cla"se &o"ld +o" incl"de in a SEAET statement to restrict the data ret"rned to onl+ the

emplo+ees in department 1?# $ar!eren voor na!i3!en

'1( )"nten

/BE%E '*(

F%O$

SEAET

S

orrect.

2=. ,o" need to displa+ emplo+ees &hose salar+ is in the range of ???? and 7????. /hich comparison


'1( )"nten

0

A6E

@ET/EE0R


58/78

2>. The E$)AO,EES table incl"des these col"mns

E$)AO,EED 09$@E%'4( 0OT 09AA

A


59/78

/BE%E price JK

'*(


F%O$ prod"cts

B


60/78

One of the statements &ill eliminate all d"plicate DE)


61/78

4. < foreign !e+ cannot refer to a primar+ !e+ in the same table. Tr"e or False# $ar!eren voor na!i3!en

'1( )"nten

/aar

0iet &aar '*(




62/78

'1( )"nten

/aar

0iet &aar '*(


>.


63/78

%E


64/78

/BE%E


65/78

1>. The SEAET statement retrieves information from the database. n a SEAET statement5 +o" can do all

of the follo&ing EHE)T $ar!eren voor na!i3!en

'1( )"nten

)ro3ection

$anip"lation '*(

Goining

Selection


2?. /hich SA statement &ill ret"rn an error# $ar!eren voor na!i3!en

'1( )"nten

SEA * F% s!+ '*(

select star from s!+

SEAET star F%O$ s!+

SEAET * F%O$ s!+

orrect.

Section 1;

21. n a SEAET statement


66/78

Section 1=

2. /here in a SA statement can +o" not "se arithmetic operators# $ar!eren voor na!i3!en

'1( )"nten

SEAET

F%O$ '*(

/BE%E

0O0E


24. /hich cla"se &o"ld +o" incl"de in a SEAET statement to restrict the data ret"rned to onl+ the

emplo+ees in department 1?# $ar!eren voor na!i3!en'1( )"nten

/BE%E '*(

F%O$

SEAET

S

orrect.

27. /hich of the follo&ing elements cannot be incl"ded in a /BE%E cla"se# $ar!eren voor na!i3!en

'1( )"nten

< col"mn alias '*(

< col"mn name

< comparison condition

< constant


2;. /hich operator is "sed to combine col"mns of character strings to other col"mns# $ar!eren voor

na!i3!en

'1( )"nten

*


67/78

Z

[[ '*(


2=. /hat does the DST0T !e+&ord do &hen it is "sed in a SEAET cla"se# $ar!eren voor na!i3!en

'1( )"nten

Bides 09AA val"es

Eliminates all "ni:"e val"es and compares val"es

Eliminates d"plicate ro&s in the res"lt '*(

Eliminates onl+ "ni:"e ro&s in the res"lt


28. ,o" need to displa+ emplo+ees &hose salar+ is in the range of ???? and 7????. /hich comparison


'1( )"nten

0

A6E

@ET/EE0R


68/78

DE)


69/78

*


. ,o" &ant to determine the orders that have been placed b+ c"stomers &ho reside in hicago. ,o" &rite

this partial SEAET statement

SEAET orderid5 orderdate5 total

F%O$ orders

/hat sho"ld +o" incl"de in +o"r SEAET statement to achieve the desired res"lts# $ar!eren voor na!i3!en

'1( )"nten


70/78

DE)( )rimar+6e+

A( 0OT 09AA

Eval"ate these t&o SEAET statements

1. SEAET DST0T emplo+eeid5 departmentid5 managerid F%O$ emplo+ees

2. SEAET emplo+eeid5 departmentid5 managerid F%O$ emplo+ees

/hich of the follo&ing statements is tr"e# $ar!eren voor na!i3!en

'1( )"nten

The t&o statements &ill displa+ the same data. '*(

The first statement &ill displa+ a partic"lar DE)


71/78


Section 18

=. The )A?? or greater. ,o" &ant the pla+ers names to be

displa+ed alphabeticall+ b+ last name and then b+ first name. /hich statement sho"ld +o" "se to achieve

the re:"ired res"lts# $ar!eren voor na!i3!en

'1( )"nten


F%O$ pla+ers

/BE%E positionid KL ;>??


'*(


F%O$ pla+ers

/BE%E positionid K ;>??



F%O$ pla+ers

/BE%E positionid L ;>??

O%DE% @, lastname DES5 firstname

orrect.

8. The E$)AO,EES table contains these col"mns

E$)AO,EED 09$@E%'>( )6

A


72/78

F%O$ emplo+ees

O%DE% @, DE)T

Bo& &ill the res"lts differ# $ar!eren voor na!i3!en

'1( )"nten

One of the statements &ill ret"rn a s+ntax error.

One of the statements &ill eliminate all d"plicate DE)


73/78

41. From left to right5 &hat is the correct order of )recedence# $ar!eren voor na!i3!en

'1( )"nten


74/78

'6ies alle goede ant&oorden.(

1

7?

27 '*(

1?

27? '*(

1??


48. ,o" need to create a report to displa+ all emplo+ees that &ere hired on or before Gan"ar+ 15 1>>;. Thedata sho"ld displa+ in this format

Emplo+ee Start Date and Salar+

148= X Smith 1?-$2 Z 7???

/hich SEAET statement co"ld +o" "se# $ar!eren voor na!i3!en

'1( )"nten

SEAET emplo+eeid [[ X [[ lastname VEmplo+eeW5

hiredate [[ Z [[ salar+ VStart Date and Salar+

F%O$ emplo+ees

/BE%E hiredate JL M?1-G;M

SEAET emplo+eeid [[M M[[ lastname \Emplo+ee\5

hiredate [[M M[[ salar+ \Start Date and Salar+\

F%O$ emplo+ees

/BE%E hiredate JL ?1-G;M

SEAET emplo+eeid [[M\- \[[ lastname \Emplo+ee\5

hiredate [[\ Z \[[ salar+ Start Date and Salar+\

F%O$ emplo+ees


SEAET emplo+eeid [[M X M[[ lastname MEmplo+eeM5

hiredate [[M Z M[[ salar+ MStart Date and Salar+\F%O$ emplo+ees


SEAET emplo+eeid [[M X M[[ lastname \Emplo+ee\5

hiredate [[M Z M[[ salar+ \Start Date and Salar+\

F%O$ emplo+ees



75/78

'*(


4>. Eval"ate this SEAET statement


F%O$ emplo+ees

Bo& &ill the res"lts of this :"er+ be sorted# $ar!eren voor na!i3!en

'1( )"nten

The database &ill displa+ the ro&s in &hatever order it finds it in the database5 so no partic"lar order. '*(

The res"lts &ill be sorted ascending b+ the A


76/78

28 mai 2?1? at 1147

.

anon+mo"s

Eval"ate this SEAET statement


F%O$ emplo+ees

Bo& &ill the res"lts of this :"er+ be sorted#

The database &ill displa+ the ro&s in &hatever order it finds it in the database5 so no partic"lar order. '*(

28 mai 2?1? at 112;

4.

anon+mo"s

/hich SEAET statement sho"ld +o" "se to limit the displa+ of prod"ct information to those prod"cts &ith a

price of less than 7?#

SEAET prod"ctid5 prod"ctnameF%O$ prod"cts

/BE%E price JK

'*(

28 mai 2?1? at 1127

7.

anon+mo"s

11. t is possible to implement non-transferabilit+ via a simple Foreign 6e+ %elationship. Tr"e or False#

/aar

0iet &aar '*(

21 mai 2?1? at 127

;.

anon+mo"s

Sorr+ it is interception table

21 mai 2?1? at 12

=.

anon+mo"s

$an+ to man+ relationships are implemented via a str"ct"re called a

S"pert+pe

21 mai 2?1? at 12

8.

anon+mo"s


77/78

.

anon+mo"s

/hen mapping s"pert+pes5 relationships at the s"pert+pe level transform as "s"al. %elationships at s"bt+pe

level are implemented as foreign !e+s5 b"t the foreign !e+ col"mns all become mandator+. Tr"e or False#

False

21 mai 2?1? at 122

1?.

anon+mo"s

8 (

1? decembrie 2??> at 171

14.

Seb+

$ergeRsa traiesti Q

? noiembrie 2??> at 1=?


78/78

17.

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Final Exam Sem 1 Oracle

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