Selection Operation in Query Processing MCQ (Multiple Choice Questions) PDF - 138

MCQ 686: In the A2 search, the index is used to retrieve a single record that meets the corresponding

1. Equality comparison
2. Index condition
3. Nonkey comparison
4. Inequality comparison

MCQ 687: The query languages are usually on a level higher than that of a standard

1. Updation language
2. Query program language
3. Procedural language
4. Programming language

MCQ 688: Data Manipulation Language enables user to access and manipulate data by organizing it to appropriate

1. Data Feature
2. Schema
3. Data Model
4. Pattern

MCQ 689: Value of one relation for a given set of attributes, appearing for a certain set of attributes in another relation, is known as

1. Integrity constraint
2. Referential integrity
3. Referenced integrity
4. Dubbed integrity

MCQ 690: The symbol that link attributes of a relationship set to the relationship set in an E-R diagram, is

1. Lines
2. Dashed lines
3. Double Lines
4. Arrows