Question 1 of 20.docx

8/20/2019 Question 1 of 20.docx

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Question 1 of 205.0/ 5.0 Points

What is data integrity?

A.It is the data contained in database that is shared.

B.It is the data contained in database that is secured.

C.It is the data contained in database that is non redundant.

D.It is the data contained in database that is accurate and consistent.


A set of possible data values is called:

A.Attribute.

B.Degree.

C.Domain.

D.Tuple.


The entity-relationship diagrams A and B shows the relationships between three entities in a school:teacher, class, and classroom. Which of the following is an appropriate interpretation concerning thediagrams? ere, ! " " ! shows a one-to-one relationship while ! " # ! shows a one-to-many relationship.

A.In A, one class is alwas assigned to the same classroom. In B, one

class ma be assigned to one or more classrooms.

B.In A, one class is alwas super!ised b one teacher. In B, one class ma

be super!ised b one or more teachers.


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C.In A, when a teacher or a classroom is decided, a single class will be

decided. In B, i" a teacher and a classroom are decided, a single class

will be decided.

D.In A, a teacher is responsible "or one class onl. In B, a teacher ma

be responsible "or one or more classes.


An advantage of the database management approach is:

A.Data is dependent on programs.

B.Data redundanc increases.

C.Data is integrated and can be accessed b multiple programs.

D. #one o" the abo!e.


$t is better to use files than a %B&' when there are:

A.$tringent real%time re&uirements.

B.'ultiple users wish to access the data.

C.Comple( relationships among data.

D. All o" the abo!e.


()** is:

A.The same as 0 "or integer

B.The same as blan) "or character

C.The same as 0 "or integer and blan) "or character

D.#ot a !alue



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$f both the functional dependencies : + and + hold for two attributes + and then the relationshipbetween + and is

A.*+*

B.*+'

C.'+#

D.'+*


Which of the following is the appropriate characteristic of a database?

A.Because a database is created to suit the "ormat o" the data, it cannot respond "le(ibl to

data "ormat changes.

B.It is di""icult to share data between operations due to an e(clusi!e control "unction.

C.The procedure "or ma)ing bac)ups is complicated.

D.It can be accessed b multiple users at the same time due to an e(clusi!e control

"unction.

Question 9 of 20 5.0/ 5.0 Points$n case of entity integrity, the primary ey may be:

A.#ot #ull

B.Both #ull not #ull.

C.#ull


Which of the following are the properties of entities?

A.-roups

B.$witchboards


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C.Attributes

D.Table

Question 11 of 20 0.0/ 5.0 Pointsou are tased with creating a database to manage where computers are installed at a company that hasoffices in several buildings. ou create an /asset0 table, a /room0 table, and a /building0 table, and lineach of them together. When new data is entered, the data in the referenced table must already e1ist.Which of the following is the appropriate order of in-put? ere, the underlined items in each table areeither primary or foreign eys.

A.Building table 1oom table Asset table

B.1oom table Building table Asset table

C.Asset table Building table 1oom table

D.1oom table Asset table Building table


ou are building a new database for a company with "2 departments. 3ach department contains multipleemployees. $n addition, each employee might wor for several departments. ow should you logicallymodel the relationship between the department entity and the employee entity?

User(User_ID, User_Name, Address)

Reservation(User_ID, Book_Title_ID, Reservation_Date)

Book_Title(Book_Title_ID, Category_Code, Book_Title, Author)

to!ked_Book(to!ked_Book_ID, Book_Title_ID, "ur!hase_Date, Cumulative_#ending_Count)


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A.Create a new entr, create a one%to%man relationship "rom the new entr to the

emploee entr, and then create a one%to%man relationship "rom the entr to the department

entr.

B.Create a mandator one%to%man relationship between department and emploee.

C.Create an optional one%to%man relationship between department and emploee.

D.Create a new entr, create a one%to%man relationship "rom the emploee to the new

entr, and create a one%to%man relationship "rom the department entr to the new entr.


The file organi4ation that provides very fast access to any arbitrary record of a file is:

A.2rdered "ile.

B. B%tree.

C.3nordered "ile.

D.4ashed "ile.


A relation is considered a:

A.three%dimensional table.

B.two%dimensional table.

C.Column.

D. one%dimensional table.


$n the 35% diagram, the one-to-many relationship, !a company has multiple employees,! is e1pressed asfollows:


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Which of the following statements correctly e1plains the above diagram?

A.There are multiple companies, and each compan has a shareholder.

B.There are multiple companies, and each compan has multiple shareholders.

C.2ne compan has one shareholder.

D.2ne compan has multiple shareholders.


$f the condition given below applies, which of the following is appropriate as an 3-5 diagram showing thedepartments employees belong to?

A.

B.

C.

D.


The values of the attribute describes a particular6666666666666


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A.ntit set

B.ntit instance

C.2rgani6ation

D.7ile


$n the relational modes, cardinality is termed as:

A.#umber o" tables.

B. #umber o" tuples.

C.#umber o" attributes.

D.#umber o" constraints.


What is a relationship called when it is maintained between two entities?

A.Ternar

B.Binar

C.8uaternar

D.3nar


Which of the following appropriately describes a domain 7defined area8, a term used for relationaldatabases?

A. It is a speci"ication "or coping the real world to a database.

B.It is a relationship deri!ed b appling the relational operations to the basic relationship.

C.It is the general term "or data insertion, updating, deletion, and search in a database.


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D.It is a set o" !alues that attributes can hold.


The database environment has all of the following components e1cept:

A.3sers.

B.Database.

C.$eparate "iles.

D. Database administrator.





C.Column.




A.It is a relationship deri!ed b appling the relational operations to the basic

relationship.

B. It is a speci"ication "or coping the real world to a database.

C.It is a set o" !alues that attributes can hold.

D.It is the general term "or data insertion, updating, deletion, and search in a database.


%B&' helps achieve:


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A.Data independence.

B.Centrali6ed control o" data.

C.#either 9A: nor 9B:.

D.Both 9A: and 9B:.


An entity set that does not have sufficient attributes to form a primary ey is a:

A.;ea) entit set.

B.Primar entit set.

C.$trong entit set.

D.$imple entit set.


The method in which records are physically stored in a specified order according to a ey field in eachrecord

A.4ash.

B.Direct.

C.$e&uential.

D.All o" the abo!e.



A.Degree.

B.Tuple.

C.Domain.


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D.Attribute.


Which of the following appropriately describes a schema in a relational database management system?

A.It is the general term "or database operations such as data insertion, updating, deletion,

search, etc.

B.It is the general term "or !arious conditions and constraints that are used to maintain the

database in absolutel per"ect condition.

C.It is a set o" data de"initions such as the data properties, "ormat, relationship with other

data, etc.

D.It is not an actual table but a !irtual table "rom the perspecti!e o" the user.



A.In A, when a teacher or a classroom is decided, a single class will be

decided. In B, i" a teacher and a classroom are decided, a single class

will be decided.

B.In A, one class is alwas assigned to the same classroom. In B, one

class ma be assigned to one or more classrooms. C.In A, one class is alwas super!ised b one teacher. In B, one class ma






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$n an 3-5 diagram double lines indicate

A.Total participation.

B.'ultiple participation.

C.Cardinalit #.

D.#one o" the abo!e.


$n a relation:

A.2rdering o" rows is immaterial.

B.#o two rows are identical.

C.9A: and 9B: both are true.

D.#one o" these.


Which of the following is not a restriction for a table to be a relation?

A.The cells o" the table must contain a single !alue.

B.#o two rows in a table ma be identical.

C.The columns must be ordered.

D.All o" the entries in an column must be o" the same )ind.


The conceptual model is:

A.Dependent on so"tware.

B.Dependent on hardware.


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C. Independent o" both hardware and so"tware.

D.Dependent on both hardware and so"tware.

Question 14 of 20 0.0/ 5.0 PointsThe values of the attribute describes a particular6666666666666

A.2rgani6ation

B.ntit set

C.7ile

D.ntit instance



A. B%tree.

B.4ashed "ile.

C.3nordered "ile.

D.2rdered "ile.


$n case of entity integrity, the primary ey may be:

A.Both #ull not #ull.

B.#ot #ull

C.#ull


The %B&' acts as an interface between what two components of an enterprise-class database system?

A. Database application and the database


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B.Database application and $8<

C. Data and the database

D.The user and the database application


The 5%B&' terminology for a row is:

A.Attribute.

B.1elation.

C.Tuple.

D.Degree.


A relational database developer refers to a record as:

A.A criteria.

B.A tuple.

C.An attribute.

D.A relation.


Which of the following is another name for wea entity?

A.Child

B.2wner

C.Dominant

D.All o" the abo!e


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HAUI_010_NSD_Quiz1_DB Designe

5eturn toAssessment *ist

Part * o" * % =0.0/ *00.0 Points


Conceptual design

A.Is a documentation techni&ue.

B.Is designing the relational model.

C. #eeds data !olume and processing "re&uencies to determine the si6e o" the database.

D.In!ol!es modelling independent o" the DB'$.


In an %1 diagram attributes are represented b+

A.1ectangle.

B.llipse.

C.$&uare.

D.Triangle.


A set o" possible data !alues is called+

A.Tuple.

B.Domain.

C.Attribute.

D.Degree.

https://gst.fsoft.com.vn/portal/tool/9354ff26-9491-4392-9e3a-1b7b3b65a788/jsf/select/selectIndexhttps://gst.fsoft.com.vn/portal/tool/9354ff26-9491-4392-9e3a-1b7b3b65a788/jsf/select/selectIndex


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The 1DB'$ terminolog "or a row is+

A.1elation.

B.Tuple.

C.Degree.

D.Attribute.


The DB'$ acts as an inter"ace between what two components o" an enterprise%class database

sstem>

A.Database application and $8<

B. Database application and the database

C. Data and the database


Question 6 of 20 0.0/ 5.0 Points

?ou are building a new database "or a compan with *0 departments. ach department contains

multiple emploees. In addition, each emploee might wor) "or se!eral departments. 4ow

should ou logicall model the relationship between the department entit and the emploeeentit>






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entr.

B.Create an optional one%to%man relationship between department and emploee.

C.Create a new entr, create a one%to%man relationship "rom the emploee to the new


D.Create a mandator one%to%man relationship between department and emploee.


A DB'$ &uer language is designed to+

A.$upport end users who use nglish%li)e commands.

B.$upport in the de!elopment o" comple( applications so"tware.

C.$peci" the structure o" a database.



Consider the @oin o" a relation 1 with relation $. I" 1 has m tuples and $ has n tuples, then the

ma(imum si6e o" @oin is+

A.mn

B.mn

C.9mn:

D.9mn:/


;hich o" the "ollowing appropriatel describes a schema in a relational database managementsstem>

A.It is a set o" data de"initions such as the data properties, "ormat, relationship with other


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data, etc.

B.It is not an actual table but a !irtual table "rom the perspecti!e o" the user.

C.It is the general term "or !arious conditions and constraints that are used to maintain the


D.It is the general term "or database operations such as data insertion, updating, deletion,

search, etc.


The "ollowing data model has been created as a part o" a librar reser!ation sstem. ;hich is the

correct description "or it> In this &uestion, * means one%to%man cardinalit and the underlinedattributes in the table de"inition are primar )es

3ser93serID, 3ser#ame, Address: 1eser!ation93serID, Boo)TitleID, 1eser!ationDate:

Boo)Title9Boo)TitleID, CategorCode, Boo)Title, Author:

$toc)edBoo)9$toc)edBoo)ID, Boo)TitleID, PurchaseDate,Cumulati!e


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D.#one o" these.


;hich o" the "ollowing is e(pressed b an %1 diagram>

A.1elation between entities

B.1elation between process and relationship

C.1elation between processes

D.1elation between entit and process


;hich o" the "ollowing is described graphicall using an %1 diagram>

A.Data source and destination

B.4ierarchical data structure

C.Data "lows between processes

D.ntities and relationships between entities


In the relational modes, cardinalit is termed as+

A. #umber o" tuples.

B.#umber o" attributes.

C.#umber o" constraints.

D.#umber o" tables.


The !alues o" the attribute describes a particular


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A.2rgani6ation

B.ntit set

C.ntit instance

D.7ile


I" the condition gi!en below applies, which o" the "ollowing is appropriate as an %1 diagramshowing the departments emploees belong to>

A.

B.

C.

D.


;hich o" the "ollowing is not a restriction "or a table to be a relation>

A.All o" the entries in an column must be o" the same )ind.

B.#o two rows in a table ma be identical.

C.The columns must be ordered.

D.The cells o" the table must contain a single !alue.


An entit set that does not ha!e su""icient attributes to "orm a primar )e is a+


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A.$imple entit set.

B.Primar entit set.

C.;ea) entit set.

D.$trong entit set.


In the 1D diagram, the one%to%man relationship, Ea compan has multiple emploees,E is

e(pressed as "ollows+

;hich o" the "ollowing statements correctl e(plains the abo!e diagram>

A.2ne compan has multiple shareholders.


C.There are multiple companies, and each compan has a shareholder.

D.2ne compan has one shareholder.


In %1 diagram generali6ation is represented b

A.Dashed ellipse

B.llipse

C.1ectangle


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D.Triangle


A relational database de!eloper re"ers to a record as+

A.A criteria.

B.An attribute.

C.A relation.

D.A tuple.


In an %1 diagram double lines indicate



C.Cardinalit #.



#3


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I" both the "unctional dependencies + F? and ?F hold "or two attributes F and ? then the

relationship between F and ? is

A.'+*

B.*+*

C.'+#

D.*+'



sstem>


B. Data and the database

C.Database application and $8<



;hich o" the "ollowing is e(pressed b an %1 diagram>

A.1elation between entities

B.1elation between entit and process


D.1elation between process and relationship


DB'$ helps achie!e+



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D.Both 9A: and 9B:.


The database en!ironment has all o" the "ollowing components e(cept+

A.$eparate "iles.

B.Database.

C.3sers.

D. Database administrator.


The "ollowing data model has been created as a part o" a librar reser!ation sstem. ;hich is thecorrect description "or it> In this &uestion, * means one%to%man cardinalit and the underlined

attributes in the table de"inition are primar )es





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;hich o" the "ollowing are the properties o" entities>

A.Attributes

B.$witchboards

C.Table

D.-roups


A relation is considered a+



C. one%dimensional table.

D.Column.


Conceptual design

A.Is designing the relational model.

B.Is a documentation techni&ue.

C. #eeds data !olume and processing "re&uencies to determine the si6e o" the database.



;hen the data model is represented to con"orm to the notational con!ention shown below,

which o" the "ollowing statements appropriatel interprets the designated %1 diagram>


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A.It doe not occur that a single order placement is gi!en "or multiple tpes o" products.

B.A single product is supplied b a single supplier.

C.It does not occur that a single order placement is gi!en to multiple suppliers.

D.2rder statements and deli!er statements ha!e a one%to%one correspondence.


?ou are building a new database "or a compan with *0 departments. ach department contains

multiple emploees. In addition, each emploee might wor) "or se!eral departments. 4ow

should ou logicall model the relationship between the department entit and the emploeeentit>






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A.Create a mandator one%to%man relationship between department and emploee.

B.Create a new entr, create a one%to%man relationship "rom the emploee to the new



D.Create a new entr, create a one%to%man relationship "rom the new entr to the


entr.


?ou are tas)ed with creating a database to manage where computers are installed at a companthat has o""ices in se!eral buildings. ?ou create an asset table, a room table, and a

building table, and lin) each o" them together. ;hen new data is entered, the data in there"erenced table must alread e(ist. ;hich o" the "ollowing is the appropriate order o" in%put>

4ere, the underlined items in each table are either primar or "oreign )es.

A.1oom table Asset table Building table



D.Building table 1oom table Asset table


A DB'$ &uer language is designed to+

A.$upport end users who use nglish%li)e commands.


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B.$upport in the de!elopment o" comple( applications so"tware.

C.$peci" the structure o" a database.



;hich o" the "ollowing appropriatel describes a schema in a relational database managementsstem>

A.It is the general term "or !arious conditions and constraints that are used to maintain the


B.It is a set o" data de"initions such as the data properties, "ormat, relationship with other

data, etc.

C.It is not an actual table but a !irtual table "rom the perspecti!e o" the user.


search, etc.


;hich o" the "ollowing is another name "or wea) entit>

A.Child

B.2wner

C.Dominant

D.All o" the abo!e


Consider the @oin o" a relation 1 with relation $. I" 1 has m tuples and $ has n tuples, then thema(imum si6e o" @oin is+

A.mn

B.9mn:


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C.9mn:/

D.mn

Question 20 of 20 5.0/ 5.0 Points%1 model uses this smbol to represent wea) entit set>

A.Dotted rectangle.

B.Diamond.

C.Doubl outlined rectangle.

D.#one o" these.



Part * o" * % 50.0/ *00.0 Points


;hich o" the "ollowing appropriatel describes a schema in a relational database management

sstem>

A.It is a set o" data de"initions such as the data properties, "ormat, relationship with other

data, etc.


C.It is the general term "or !arious conditions and constraints that are used to maintain the



search, etc.




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The conceptual model is+

A. Independent o" both hardware and so"tware.

B.Dependent on so"tware.

C.Dependent on both hardware and so"tware.

D.Dependent on hardware.


In %1 Diagram total participation is represented b+

A.Double lines

B.$ingle line

C.Dashed lines

D.Triangle



A. one%dimensional table.

B.Column.

C.two%dimensional table.

D.three%dimensional table.


;hat is a relationship called when it is maintained between two entities>

A.Binar

B.8uaternar


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C.Ternar

D.3nar

Question 6 of 20 0.0/ 5.0 PointsThe !alues o" the attribute describes a particular

A.7ile

B.ntit set

C.ntit instance

D.2rgani6ation


The "ile organi6ation that pro!ides !er "ast access to an arbitrar record o" a "ile is+

A.2rdered "ile.

B. B%tree.

C.4ashed "ile.

D.3nordered "ile.


In an %1 diagram attributes are represented b+

A.$&uare.

B.1ectangle.

C.Triangle.

D.llipse.


;hich o" the "ollowing is an accurate statement in regard to an %1 diagram>


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A.It clari"ies the operational relations between indi!idual processes and data. As a result,

the relations between introduced entities e(press the indi!idual operational processes.

B.It creates an abstraction o" in"ormation handled in operations, so as to e(press entities

and the relations between them.

C. It is created as a prete(t to implementing a relational database

D.It e(presses the entire process "rom data creating to destruction.



A.4ierarchical data structure

B.Data "lows between processes

C.Data source and destination



#3


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C.In!ol!es modelling independent o" the DB'$.

D.Is a documentation techni&ue.

Question 13 of 20 5.0/ 5.0 Points;hich o" the "ollowing is the appropriate characteristic o" a database>

A.The procedure "or ma)ing bac)ups is complicated.


C.It can be accessed b multiple users at the same time due to an e(clusi!e control

"unction.

D.Because a database is created to suit the "ormat o" the data, it cannot respond "le(ibl to




A.#umber o" attributes.

B.#umber o" tables.

C. #umber o" tuples.



The entit%relationship diagrams A and B shows the relationships between three entities in a

school+ teacher, class, and classroom. ;hich o" the "ollowing is an appropriate interpretationconcerning the diagrams> 4ere, E * * E shows a one%to%one relationship while E * E shows a

one%to%man relationship.


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A.In A, when a teacher or a classroom is decided, a single class will be

decided. In B, i" a teacher and a classroom are decided, a single classwill be decided.

B.In A, one class is alwas assigned to the same classroom. In B, one


C.In A, a teacher is responsible "or one class onl. In B, a teacher ma


D.In A, one class is alwas super!ised b one teacher. In B, one class ma



;hat is data integrit>

A.It is the data contained in database that is secured.

B.It is the data contained in database that is accurate and consistent.

C.It is the data contained in database that is shared.

D.It is the data contained in database that is non redundant.



A.-roups

B.$witchboards

C.Attributes

D.Table


DB'$ helps achie!e+


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D.Both 9A: and 9B:.


It is better to use "iles than a DB'$ when there are+






An entit set that does not ha!e su""icient attributes to "orm a primar )e is a+

A.Primar entit set.

B.$trong entit set.

C.;ea) entit set.

D.$imple entit set.



Part * o" * % G0.0/ *00.0 Points



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In %1 Diagram relationship tpe is represented b+

A.1ectangle

B.llipse

C.Diamond

D.Dashed ellipse


In a relation+




D.#one o" these.


;hich o" the "ollowing appropriatel describes a schema in a relational database management

sstem>

A.It is the general term "or !arious conditions and constraints that are used to maintain the



C.It is the general term "or database operations such as data insertion, updating, deletion,

search, etc.

D.It is a set o" data de"initions such as the data properties, "ormat, relationship with other

data, etc.


The method in which records are phsicall stored in a speci"ied order according to a )e "ield


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in each record

A.4ash.

B.Direct.

C.$e&uential.

D.All o" the abo!e.



A.An attribute.

B.A criteria.

C.A relation.

D.A tuple.


The "ollowing data model has been created as a part o" a librar reser!ation sstem. ;hich is the

correct description "or it> In this &uestion, * means one%to%man cardinalit and the underlined

attributes in the table de"inition are primar )es





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C.The cardinalit between the Boo)Title entit and $toc)edBoo) entit is opposite

D.The $toc)edBoo) to be lent can be decided at the time o" reser!ation

Question 7 of 20 0.0/ 5.0 Points;hich o" the "ollowing appropriatel describes a domain 9de"ined area:, a term used "or

relational databases>

A.It is a set o" !alues that attributes can hold.

B. It is a speci"ication "or coping the real world to a database.


D.It is a relationship deri!ed b appling the relational operations to the basic

relationship.


An instance o" relational schema 1 9A, B, C: has distinct !alues o" A including #3

A.A is a candidate )e.

B.A is not a candidate )e

C.A is a primar He

D.Both 9A: and 9C:



A.Degree.

B.Domain.

C.Attribute.

D.Tuple.

Question 10 of 20


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A table can ha!e onl one

A.Primar )e

B.$econdar )e

C.3ni&ue )e

D.Alternate )e


;hich o" the "ollowing statements correctl describes data normali6ation>

A.It reduces the amount o" re&uired memor space b simpli"ing database structures.

B.It "acilitates application program creation

C. It increases the e""icienc o" database searches

D.It pre!ent data multiplicit, thereb ma)ing maintenance and management easier


I" the condition gi!en below applies, which o" the "ollowing is appropriate as an %1 diagram

showing the departments emploees belong to>

A.

B.

C.

D.



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DB'$ helps achie!e+




D.Both 9A: and 9B:.


;hich option is not T13>

A.3se !archar when our strings do not ha!e a "i(ed length.

B.3se char when our strings are alwas going to be the same length.

C.9A: and 9B: is true.

D.#either 9A: nor 9B:


In an %1 diagram an entit set is represent b a+

A.Diamond bo(.

B.llipse.

C.1ectangle.

D.Circle.


?ou are tas)ed with creating a database to manage where computers are installed at a compan

that has o""ices in se!eral buildings. ?ou create an asset table, a room table, and a

building table, and lin) each o" them together. ;hen new data is entered, the data in there"erenced table must alread e(ist. ;hich o" the "ollowing is the appropriate order o" in%put>

4ere, the underlined items in each table are either primar or "oreign )es.


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B.1oom table Asset table Building table

C.1oom table Building table Asset table

D.Asset table Building table 1oom table



sstem>


B. Data and the database

C.The user and the database application

D.Database application and $8<


%1 model uses this smbol to represent wea) entit set>

A.Dotted rectangle.

B.Diamond.


D.#one o" these.

Question 19 of 20


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The conceptual model is+

A. Independent o" both hardware and so"tware.

B.Dependent on hardware.

C.Dependent on so"tware.

D.Dependent on both hardware and so"tware.



A.4ierarchical data structure

B.Data source and destination

C.Data "lows between processes




A.It is the data contained in database that is shared.



D.It is the data contained in database that is accurate and consistent.




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A.Attribute.

B.Degree.

C.Domain.

D.Tuple.



A.In A, one class is alwas assigned to the same classroom. In B, one


B.In A, one class is alwas super!ised b one teacher. In B, one class ma


C.In A, when a teacher or a classroom is decided, a single class will be

decided. In B, i" a teacher and a classroom are decided, a single classwill be decided.








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Question 5 of 20 5.0/ 5.0 Points$t is better to use files than a %B&' when there are:






()** is:

A.The same as 0 "or integer

B.The same as blan) "or character


D.#ot a !alue


$f both the functional dependencies : + and + hold for two attributes + and then the relationshipbetween + and is

A.*+*

B.*+'

C.'+#

D.'+*




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"unction.


$n case of entity integrity, the primary ey may be:

A.#ot #ull

B.Both #ull not #ull.

C.#ull


Which of the following are the properties of entities?

A.-roups

B.$witchboards

C.Attributes

D.Table


ou are tased with creating a database to manage where computers are installed at a company that hasoffices in several buildings. ou create an /asset0 table, a /room0 table, and a /building0 table, and lineach of them together. When new data is entered, the data in the referenced table must already e1ist.Which of the following is the appropriate order of in-put? ere, the underlined items in each table areeither primary or foreign eys.


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D.1oom table Asset table Building table


ou are building a new database for a company with "2 departments. 3ach department contains multipleemployees. $n addition, each employee might wor for several departments. ow should you logicallymodel the relationship between the department entity and the employee entity?







entr.

B.Create a mandator one%to%man relationship between department and emploee.



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D.Create a new entr, create a one%to%man relationship "rom the emploee to the new




A.2rdered "ile.

B. B%tree.

C.3nordered "ile.

D.4ashed "ile.





C.Column.






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A.There are multiple companies, and each compan has a shareholder.


C.2ne compan has one shareholder.

D.2ne compan has multiple shareholders.


$f the condition given below applies, which of the following is appropriate as an 3-5 diagram showing thedepartments employees belong to?

A.

B.

C.

D.


The values of the attribute describes a particular6666666666666

A.ntit set

B.ntit instance

C.2rgani6ation

D.7ile




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A.#umber o" tables.

B. #umber o" tuples.

C.#umber o" attributes.




A.Ternar

B.Binar

C.8uaternar

D.3nar



A. It is a speci"ication "or coping the real world to a database.





$n a relation:



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D.#one o" these.


An instance of relational schema 5 7A, B, 98 has distinct values of A including ()** values. Which one of the following is true?

A.A is a candidate )e.

B.A is not a candidate )e

C.A is a primar He

D.Both 9A: and 9C:


%B&' helps achieve:




D.Both 9A: and 9B:.









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"unction.



A.Ternar

B.8uaternar

C.3nar

D.Binar


3-5 model uses this symbol to represent wea entity set?

A.Dotted rectangle.

B.Diamond.


D.#one o" these.



A.It is the data contained in database that is accurate and consistent.



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D.It is the data contained in database that is shared.

Question 9 of 20 0.0/ 5.0 PointsThe following data model has been created as a part of a library reservation system. Which is the correctdescription for it? $n this uestion, " # means one-to-many cardinality and the underlined attributes in thetable definition are primary eys

)ser7)ser6$%, )ser6(ame, Address8 5eservation7)ser6$%, Boo6Title6$%, 5eservation6%ate8Boo6Title7Boo6Title6$%, 9ategory69ode, Boo6Title, Author8 'toced6Boo7'toced6Boo6$%,Boo6Title6$%, ;urchase6%ate, 9umulative6*ending69ount8

A. It is redundant to separate the Boo)Title entit and $toc)edBoo)ed entit

B.The cardinalit between the Boo)Title entit and $toc)edBoo) entit is opposite

C.The Boo)Title entit is an abstract entit that has no phsical substance

D.The $toc)edBoo) to be lent can be decided at the time o" reser!ation


The conceptual model is:

A.Dependent on hardware.

B. Independent o" both hardware and so"tware.

C.Dependent on both hardware and so"tware.

D.Dependent on so"tware.


Which of the following is e1pressed by an 3-5 diagram?


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A.1elation between entit and process

B.1elation between entities


D.1elation between process and relationship


Which of the following is an accurate statement in regard to an 3-5 diagram?

A.It clari"ies the operational relations between indi!idual processes and data. As a result,

the relations between introduced entities e(press the indi!idual operational processes.

B. It is created as a prete(t to implementing a relational database

C.It e(presses the entire process "rom data creating to destruction.

D.It creates an abstraction o" in"ormation handled in operations, so as to e(press entities

and the relations between them.


$t is better to use files than a %B&' when there are:







A. #umber o" tuples.

B.#umber o" tables.


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C.#umber o" constraints.

D.#umber o" attributes.

Question 15 of 20 0.0/ 5.0 Points A relation is considered a:



C. one%dimensional table.

D.Column.


The database environment has all of the following components e1cept:

A. Database administrator.

B.3sers.

C.Database.

D.$eparate "iles.


$n 3-5 diagram generali4ation is represented by

A.llipse

B.Dashed ellipse

C.Triangle

D.1ectangle


9onceptual design


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A. #eeds data !olume and processing "re&uencies to determine the si6e o" the database.

B.Is a documentation techni&ue.

C.Is designing the relational model.




A.It is the general term "or data insertion, updating, deletion, and search in a database.


C. It is a speci"ication "or coping the real world to a database.





A.2ne compan has multiple shareholders.


C.There are multiple companies, and each compan has a shareholder.


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D.2ne compan has one shareholder.



Part * o" * % 0.0/ *00.0 Points


?ou are tas)ed with creating a database to manage where computers are installed at a compan

that has o""ices in se!eral buildings. ?ou create an asset table, a room table, and abuilding table, and lin) each o" them together. ;hen new data is entered, the data in the

re"erenced table must alread e(ist. ;hich o" the "ollowing is the appropriate order o" in%put>4ere, the underlined items in each table are either primar or "oreign )es.



C.1oom table Asset table Building table

D.Asset table Building table 1oom table

Question 2 of 20 5.0/ 5.0 Points;hich o" the "ollowing is e(pressed b an %1 diagram>

A.1elation between process and relationship

B.1elation between processes



56/61

C.1elation between entities

D.1elation between entit and process

Question 3 of 20 5.0/ 5.0 Points;hich o" the "ollowing appropriatel describes a domain 9de"ined area:, a term used "or

relational databases>

A.It is a relationship deri!ed b appling the relational operations to the basic

relationship.

B.It is a set o" !alues that attributes can hold.

C. It is a speci"ication "or coping the real world to a database.

D.It is the general term "or data insertion, updating, deletion, and search in a database.


The "ile organi6ation that pro!ides !er "ast access to an arbitrar record o" a "ile is+

A.4ashed "ile.

B. B%tree.

C.3nordered "ile.

D.2rdered "ile.


In an %1 diagram double lines indicate



C.Cardinalit #.




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Consider the @oin o" a relation 1 with relation $. I" 1 has m tuples and $ has n tuples, then the

ma(imum si6e o" @oin is+

A.9mn:

B.mn

C.mn

D.9mn:/


In %1 Diagram total participation is represented b+

A.Triangle

B.$ingle line

C.Double lines

D.Dashed lines



A.#umber o" tables.

B.#umber o" attributes.

C. #umber o" tuples.



In %1 diagram generali6ation is represented b

A.1ectangle

B.llipse


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C.Triangle

D.Dashed ellipse

Question 10 of 20 5.0/ 5.0 PointsA table can ha!e onl one

A.Alternate )e

B.Primar )e

C.$econdar )e

D.3ni&ue )e



A.Attribute.

B.Tuple.

C.Domain.

D.Degree.


;hich o" the "ollowing is the appropriate characteristic o" a database>




C.It can be accessed b multiple users at the same time due to an e(clusi!e control

"unction.

D.The procedure "or ma)ing bac)ups is complicated.



59/61

In a relation+




D.#one o" these.




B. one%dimensional table.

C.Column.

D.two%dimensional table.



A.A tuple.

B.A relation.

C.An attribute.

D.A criteria.


#3


60/61


D.#ot a !alue

Question 17 of 20 5.0/ 5.0 PointsIn case o" entit integrit, the primar )e ma be+

A.Both #ull not #ull.

B.#ot #ull

C.#ull



A.Table

B.Attributes

C.$witchboards

D.-roups



A.ntities and relationships between entities

B.4ierarchical data structure

C.Data source and destination

D.Data "lows between processes


The 1DB'$ terminolog "or a row is+


61/61

A.Attribute.

B.1elation.

C.Degree.

D.Tuple.

Documents

Question 1 of 20.docx