DBMS-Unit1-Quiz

In the relational model, cardinality is termed as:

• A number of tuples.

• A number of attributes.

• A number of attributes.

• A number of constraints

The logical representation of an organization's data is called a(n):

• Database model

• Entity-relationship model

• Relationship systems design

• Database entity diagram

Customers, cars, and parts are examples of:

• Entities

• Attributes

• Cardinals

• Relationships

Minimal Super keys are called

• Schema keys

• Candidate keys

• Domain keys

• Attribute keys

Which of the following is not a level of data abstraction?

• Physical Level

• Critical Level

• Logical Level

• View Level

Disadvantages of File systems to store data is:

• Data redundancy and inconsistency

• Difficulty in accessing data

• Data isolation

• All of the above

Which of the following in not a function of DBA?

• Network Maintenance

• Routine Maintenance

• Schema Definition

• Authorization for data access

Data Models in DBMS are classified into ______ categories.

• 3

• 5

• 2

• 4

Which of the following is example of Object based logical model ?

• Relational Model

• Network Model

• Entity Relationship Model

• Hierarchical model

In Object Oriented Model values are stored into __________ variables.

• Static

• Local

• Instance

• Global