Introduction to Disk Storage MCQ with Answers PDF Download – Test 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