DBMS-Entity Relationship (E-R) Model Questions and Answers

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Showing 10 of 38 questions
Q1
E-R model was first introduced by Dr. E.F. Codd.
  • A TRUE
  • B FALSE
Answer: Option B
Q2
E-R modelling is a high-level conceptual data model developed to facilitate database design.
  • A TRUE
  • B FALSE
Answer: Option A
Q3
E-R model is dependent on a particular database management system (DBMS) and hardware platform.
  • A TRUE
  • B FALSE
Answer: Option B
Q4
A binary relationship exists when an association is maintained within a single entity.
  • A TRUE
  • B FALSE
Answer: Option B
Q5
A weak entity type is independent on the existence of another entity.
  • A TRUE
  • B FALSE
Answer: Option B
Q6
An entity type is a group of objects with the same properties, which are identified by the enterprise as having an independent existence.
  • A TRUE
  • B FALSE
Answer: Option A
Q7
An entity occurrence is also called entity instance.
  • A TRUE
  • B FALSE
Answer: Option A
Q8
An entity instance is a uniquely identificable object of an entity type
  • A TRUE
  • B FALSE
Answer: Option A
Q9
A relationship is an association among two or more entities that is of interesdt to the enterprise.
  • A TRUE
  • B FALSE
Answer: Option A
Q10
The participation is optional if an entity's existence requires the existence of an associated entity in a particular relationship.
  • A TRUE
  • B FALSE
Answer: Option A

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