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A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

A primary key field is always unique. Any other field that you have can be set to not allow duplicate values if necessary too.

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