12th Class Computer Science MCQS Chapter 3

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12th Class Computer Science MCQS


_______________ refers to a method of database distribution in which different portions of database reside at different nodes in the network.
Partitioning
Spliting
Replication
Dividing

Which of the following is used to describe the characteristics of an object?
Modality
Attribute
Relationship
Cardinality

A data model is :
Transformed into tables and relationships
Shown as an entity-relationship diagram
A logical representation of the structure of the database
All

_____ defines the nature of the relationship?
cardinality
none of these
modality
entities

Which of the following is basic data distribution strategy?
Centralized
All
Partitioned
Replication

Optional is represented by
1
none of these
0
2

A factor to consider when choosing a file organization is:
Security
Fast retrieval
All
Efficient storage

Local variables are also called:
Automatic variables
Global variables
Grid Variables
None of these

Which of the following is used to associate entities with one another?
Identifier
Entity
Relationship
Attribute

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