DBMS-Enhanced Entity-Relationship (EER) Model Questions and Answers

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Q11
Generalisation maximizes the differences between the entities by identifying the common features .
  • A TRUE
  • B FALSE
Answer: Option A
Q12
Total participation is also called an optional participation.
  • A TRUE
  • B FALSE
Answer: Option B
Q13
The participation constraint can be total jor partial.
  • A TRUE
  • B FALSE
Answer: Option A
Q14
The participation cosnstraint can be total or partial.
  • A TRUE
  • B FALSE
Answer: Option A
Q15
A participation constraint can be total or partial
  • A TRUE
  • B FALSE
Answer: Option A
Q16
A non-joint constraint is also called an overlapping constraint.
  • A TRUE
  • B FALSE
Answer: Option A
Q17
A partial articipation is also called a mandatory participation.
  • A TRUE
  • B FALSE
Answer: Option B
Q18
Disjoint constraint specifies the relationship between members of the subtypes and indites whether it is possible for a member of a supertype to be a member of one, or more than one, subtype.
  • A TRUE
  • B FALSE
Answer: Option A
Q19
The disjoint constraint is only applied when a supertype has one subtype.
  • A TRUE
  • B FALSE
Answer: Option B
Q20
A partial participation is represented using a single line between the supertype and the specialiasation/generalisation circle.
  • A TRUE
  • B FALSE
Answer: Option A

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