extended er features

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Like attribute inheritance, inheritance that applies through all tiers of lower-level entity sets, is known to be

Like attribute inheritance, inheritance that applies through all tiers of lower-level entity sets, is known to be
  • A. Participation inheritance
  • B. Execution inheritance
  • C. Existence inheritance
  • D. Dependency inheritance
  • Correct Answer: Option A

In user-defined constraints on generalization, lower level entity sets can be of type

In user-defined constraints on generalization, lower level entity sets can be of type
  • A. 2 types
  • B. 3 types
  • C. 4 types
  • D. 5 types
  • Correct Answer: Option A

An abstraction through which relationships are treated as higher-level entities, is known as

An abstraction through which relationships are treated as higher-level entities, is known as
  • A. Aggregation
  • B. Tabulation
  • C. Simulation
  • D. Patriotization
  • Correct Answer: Option A

By default, generalization type applied is

By default, generalization type applied is
  • A. Dependent specialization
  • B. Partial specialization
  • C. Complete specialization
  • D. Total specialization
  • Correct Answer: Option B

Database user assigns entities to a given entity set, in type of generalization’s constraints

Database user assigns entities to a given entity set, in type of generalization’s constraints
  • A. Data-defined
  • B. User-defined
  • C. System-defined
  • D. Condition-defined
  • Correct Answer: Option B