Can a table have 3 primary keys?

Question

A table can only ever have a one primary key. It is not possible to create a table with two different primary keys. You can create a table with two different unique indexes (which are much like a primary key) but only one primary key can exist. 17 мая 2012 г.

How many primary keys can you have on a table?

A primary key is a field or set of fields with values that are unique throughout a table. Values of the key can be used to refer to entire records, because each record has a different value for the key. Each table can only have one primary key.

Can a table have multiple primary keys?

A table can have only one primary key, which may consist of single or multiple fields. When multiple fields are used as a primary key, they are called a composite key. If a table has a primary key defined on any field(s), then you cannot have two records having the same value of that field(s).

How many primary keys can be contained by a database with three tables?

You cannot use more than 1 primary key in the table. for that you have composite key which is combination of multiple fields.

How many primary key A table can max have?

A table can contain only one primary key constraint.

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