DBMS

DBMS - Topic Wise Multiple Choice Questions (MCQ)



1 )

In an object-oriented model, one object can access data of another object by passing:

Message
Instance variable
Variable
None of these


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2 )

A view of database that appears to an application program is known as:

Schema
Subschema
Virtual table
None of the above


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3 )

An abstraction concept for building composite object from their component object is called:

Specialization
Normalization
Generalization
Aggregation


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4 )

A set of objects that share a common structure and a common behavior is called:

Object
Class
Entity
None of these


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5 )

Every weak entity set can be converted into a strong entity set by:

using generalization
adding appropriate attributes
using aggregation
none of the above


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