" there may be more than one field which can collectively form the primary key ". Illustrate woth an example.
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primary key may be applied to one of more fields. each record in a primary key field is a unique value which differs from all others.
for ex
primary key can be applied to GR no. and roll no in a school's database
for ex
primary key can be applied to GR no. and roll no in a school's database
Answered by
1
primary may be key applied to one of more fields . each record in a primary key field is a unique value which from all others.....
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