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  1. Every entity in E1 is associated with exactly one entity in E2.
  2. Some entity in E1 is associated with more than one entity in E2.
  3. Every entity in E2 is associated with exactly one entity in E1.
  4. Every entity in E2 is associated with at most one entity in E1.
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1 Answers

Option 1 : Every entity in E1 is associated with exactly one entity in E2.

As the number of entries in E1 is greater than the number of entries in E2

As participation is total,

R is an onto function from E1 to E2

As participation of both the entity sets is total and number of entries in E1 is greater than E2, R is an onto function.

: :  Partial/Optional participation

: : Total/Mandatory participation or Existence dependency

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