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No. A Primary Key is the Unique identifier and cannot be null and cannot be duplicate.
It shouldn't let you leave the primary key blank. The primary key is a means of identifying a unique record.
unnethe (Chaucer)
To uniquely identify a record, as every primary key value must be unique. To ensure every record has a key, as a primary key cannot be left blank. To be used in creating relationships. For sorting and searching records.
No two units of matter can occupy the same space at once. This is one of the primary properties of matter.
Political Party!! novanet- gov whoop whoop!
In a database a primary key is a unique value, meaning that it cannot be repeated. It is also mandatory, so it cannot be left blank. Something like a product code, an ISBN number, a student number, an employee number etc. would be primary keys.
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