Database Systems Exam Prep MCQs – Mock Test 316

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Query Optimization Techniques MCQ – Mock Test 316 PDF Download

MCQ 1576: The term that optimizes subexpressions shared by different expressions in a program is called:

Multiple subexpression elimination
Common subexpression elimination
Parametric subexpression elimination
Shared subexpression elimination

MCQ 1577: The network data model and the hierarchical data model preceded the:

Relational Model
Semi-structured data model
Entity relationship model
Object-based Data model

MCQ 1578: In the select evaluation of insertion, if the relation did not have a primary key constraint, the problem encountered would be of:

Consistency
Integration
Syntax
Redundancy

MCQ 1579: The first subquery of the recursive view is said to be:

Absolute
Static
Recursive
Non-recursive

MCQ 1580: Transition tables can be used with:

Start atomic triggers
Before triggers
After triggers
Terminate triggers

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