Database Systems MCQs - Chapter 14
Introduction to RDBMS Quiz Questions & Answers PDF Download - 11
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Introduction to RDBMS Exam Questions and Answers PDF Download: Test 11
The schema of a relation in the relational model
- Changes with time
- Changes with access
- Changes with updation
- Doesn't changes
In a schema diagram representation, each relation appears in a
- Box
- Diamond
- Triangle
- Circle
A special value that signifies that the value is unknown or does not exist, is said to be
- Null
- Unknown
- Known
- 0
For each attribute of a relation, there is a set of permitted values, known as the attribute's
- Medium
- Mean
- Domain
- Sequence
A relation may include the primary key of another relation, among its attributes, known as
- Neighbor key
- Foreign key
- Candidate key
- Super key
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- Operators in SELECT operation statement such as 'and' , 'or' and 'not' are classified as
- If in JOIN operation, conditions of JOIN operation are not satisfied then results of operation is
- Type of classes which specifies operations and attributes but corresponding classes are not available are classified as
- Name of operation and type of data of parameters must be included in
- Considering conceptual synthesis and refinement, generalization process is classified as
Introduction to RDBMS MCQ Book Questions
- An approach to introduce redundancy is to duplicate every disk, process is known as
- Preface that converts DML statements to normal procedure calls in host language, is known as
- There are some restrictions on recursive query in a recursive view, query should be
- XML language was initially designed as a way of adding markup information to
- Algebraic operation that outputs specified attributes from all rows of input relation, is said to be