conceptual data models

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In commercial database management system, relational database model is also known as

In commercial database management system, relational database model is also known as
  • A. implementation data model
  • B. attribution data model
  • C. sequential data model
  • D. functional data model
  • Correct Answer: Option A

Schema which specifies that all database users requirements have been met is called

Schema which specifies that all database users requirements have been met is called
  • A. high level conceptual schema
  • B. high level logical schema
  • C. high level structural schema
  • D. high level detailed schema
  • Correct Answer: Option A

First step in designing high level conceptual data model is

First step in designing high level conceptual data model is
  • A. logical design analysis
  • B. conceptual design analysis
  • C. functional requirement analysis
  • D. requirement analysis
  • Correct Answer: Option D

Phase in data designing in which access paths and database indexes are specified is classified as

Phase in data designing in which access paths and database indexes are specified is classified as
  • A. structural design
  • B. physical design of database
  • C. data model mapping
  • D. logical design
  • Correct Answer: Option B

Detailed description on entity constraints, entity relationships and entity types is expressed in

Detailed description on entity constraints, entity relationships and entity types is expressed in
  • A. low level schema design
  • B. physical design
  • C. conceptual design
  • D. logical design
  • Correct Answer: Option C