A good identifier is which of the following?
A. One that can change over time
B. Can be null
C. One that is unique
D. Be intelligent
Answer: Option C
This Question Belongs to Database >> Modeling Data In The Organization
A binary relationship is which of the following?
A. A relationship between two attributes
B. A relationship between two entities
C. An attribute with two different relationships
D. An entity with two different relationships
A. Derived attribute
B. Optional one cardinality
C. Multi-valued attribute
D. Weak entity
A relationship is which of the following?
A. A person, place, or thing
B. Property or characteristic of an entity
C. Link between entities
D. Weak entity
A. Some of the relationships for the participating entities are 'many'.
B. The resulting associative entity has an independent meaning.
C. The resulting associative entity has no attributes.
D. All of the above.
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