Mix MCQS

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#191 Is a database model in which information is represented in the form of objects.

A)   Network Database model
B)   Relational Database Model
C)   Object-oriented Database model
D)   Hierarchical Database model
Answer:   C


#192 Who is the person who has central control over data and programs in a database system?

A)   DBA
B)   Designer
C)   System Analyst
D)   Programmer
Answer:   A


#193 In a relational terminology, an attribute is also called ___________.

A)   Record
B)   Entity
C)   Field
D)   Table
Answer:   C


#194 A row in a table is also know as __________.

A)   Column
B)   Relational
C)   Tuple
D)   Table
Answer:   C


#195 _________ is a set of rules or specifications which states that hoe data can be stored, organized and manipulated in a database system.

A)   Database Model
B)   Database design
C)   Database Architecture
D)   Database Structure
Answer:   A


#196 Which of the following database uses a collection of the table to represent both data and the relationship among those data?

A)   Network Database model
B)   Relational Database Model
C)   Object-oriented Database model
D)   Hierarchical Database model
Answer:   B


#197 ______________ is a database language that defines the structure in which data are stored.

A)   DNL
B)   DCL
C)   DDL
D)   DML
Answer:   C


#198 A field, or a combination of fields used to identify particular row in a relation is called ___________.

A)   Secondary key
B)   Foreign key
C)   Primary key
D)   Alternate key
Answer:   C



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