Disk File Records Quiz PDF: Questions and Answers - 107

MCQ 531: In high level programs, the command which sets the pointer of file to the beginning of that file is classified as

1. modify command
2. open command
3. locate command
4. reset command

MCQ 532: In unary relational operations, the symbol π is used to represent the operation called

1. OR operation
2. AND operation
3. TABLE operation
4. PROJECT operation

MCQ 533: The number of entity types participating in the E-R diagrams is represented by

1. structure of relationship
2. instance of relationship
3. degree of relationship
4. role of relationship

MCQ 534: The search value which is present on each node in search tree diagram of order 'p' is as

1. p - 1
2. p - 2
3. p + 1
4. p + 2

MCQ 535: The system used by database administrators to specify restrictions of accounts and creation of new accounts is classified as

1. controlled redundancy subsystem
2. program dependence subsystem
3. security and authorization subsystem
4. program independence subsystem