Introduction to Disk Storage Multiple Choice Questions (MCQ) PDF - 12

MCQ 56: The kind of memories that use an array of platters of CD-ROM must be loaded on demand into the drives are classified as

1. main memory
2. memory databases
3. flash memories
4. optical jukebox memories

MCQ 57: In categories of data modeling, the low level data models are also called

1. conceptual data models
2. physical data models
3. triggered data models
4. logical data models

MCQ 58: The detailed description on entity constraints, entity relationships and entity types is expressed in

1. low level schema design
2. physical design
3. conceptual design
4. logical design

MCQ 59: If there is more than one key for relation schema in DBMS then each key in relation schema is classified as

1. prime key
2. super key
3. candidate key
4. primary key

MCQ 60: The concepts of data models that are only useful to computer specialists rather than end users of programs are classified as

1. triggered data models
2. logical data models
3. conceptual data models
4. physical data models