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Databae Req & ER Mod
Chapter 2 DB Requirements and ER Modeling
Question | Answer |
---|---|
Minimum cardinality can be: | Optional or mandatory |
How many entities are involved in a unary relationship? | 1 |
A multivalued composite attribute can be used to depict which of the following weak entity concepts? | Identifying relationship |
Which of the following is a possible type of relationship (maximum cardinality-wise)? | One-to-one |
A multivalued composite attribute can be used to depict which of the following weak entity concepts? | Identifying relationship |
Which of the following is a possible type of relationship (maximum cardinality-wise)? | One-to-one |