Database - Data Modeling with ER Model - Discussion
Discussion Forum : Data Modeling with ER Model - True or False (Q.No. 15)
15.
A maximum cardinality is the maximum number of entity instances that can participate in a relationship instance.
Discussion:
2 comments Page 1 of 1.
Manju said:
10 years ago
The minimum cardinality indicates the smallest number of participants in a relationship, which can be 0 or 1 (optional or mandatory).
Maximum cardinality indicates how many instances are participating in a relationship. The possibilities include one-to-one (1:1), one-to-many (1:M), or many-to-many (M:N).
Maximum cardinality indicates how many instances are participating in a relationship. The possibilities include one-to-one (1:1), one-to-many (1:M), or many-to-many (M:N).
Shashika said:
1 decade ago
Then why should the answer get wrong when minimum cardinality is the minimum number of entity instances participate in a relationship instance?
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