Which key accepts multiple NULL values?(a) Foreign Key(b) Unique Key(c) Primary Key(d) None of the MentionedI got this question in an interview for job.I want to ask this question from Foreign, Candidate, Primary, Composite, Unique Keys in section Planning Oracle Applications of Oracle

Which key accepts multiple NULL values?(a) Foreign Key(b) Unique Key(c

1.	Which key accepts multiple NULL values?(a) Foreign Key(b) Unique Key(c) Primary Key(d) None of the MentionedI got this question in an interview for job.I want to ask this question from Foreign, Candidate, Primary, Composite, Unique Keys in section Planning Oracle Applications of Oracle
Answer» Correct choice is (a) FOREIGN Key Easy EXPLANATION: A foreign key is a key USED to link two TABLES together. This is sometimes called a REFERENCING key.Foreign Key is a column or a combination of columns whose values match a Primary Key in a different table.

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Which key accepts multiple NULL values?(a) Foreign Key(b) Unique Key(c) Primary Key(d) None of the MentionedI got this question in an interview for job.I want to ask this question from Foreign, Candidate, Primary, Composite, Unique Keys in section Planning Oracle Applications of Oracle

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