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what is primary key,unique key, foreign key? can u teach me
in simple language?
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Answer Posted / janu
Primary Key:
A primary key is a field or combination of fields that
uniquely identify a record in a table, so that an individual
record can be located without confusion.
Foreign Key:
A foreign key (sometimes called a referencing key) is a key
used to link two tables together.
| Is This Answer Correct ? | 6 Yes | 7 No |
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