Solved

Columns with Null Values Are Ignored by the UNIQUE Constraint

Question 47

True/False

Columns with null values are ignored by the UNIQUE constraint.

Related Questions

Q42: _ integrity is the integrity,or soundness of

Q43: Constraints are enabled by default when you

Q44: What is the role of the VALIDATE|NOVALIDATE

Q45: Although CHECK constraints can check multiple conditions,it

Q46: A query _ is the ability of

Q48: When no name is specified in a

Q49: A(n)_ index is an index with one

Q50: A(n)_ key establishes a relationship between two

Q51: A _ view is a view that

Q52: A FOREIGN KEY constraint that is defined