July2016 cs Q16
0. In RDBMS, the constraint that no key attribute (column) may be NULL is referred to as:
- Option : C
- Explanation :
- In RDBMS, the constraint that no key attribute (column) may be NULL is referred to as Entity Interity
- Referential integrity states that table relationships must always be consistent.
- Multi-valued dependencyis a full constraint between two sets of attributes in a relation
- Functional dependency is a relationship that exists when one attribute uniquely determines another attribute.
So, option (C) is correct.
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