What is a Composite Key ?

[ziya.pathan]

composite key is a combination of two or more columns in a table that can be used to uniquely identify each row in the table when the columns are combined uniqueness is guaranteed, but when it taken individually it does not guarantee uniqueness.

[tyagi]

A composite key, in the context of relational databases, is a combination of two or more columns in a table that can be used to uniquely identify each row in the table. Uniqueness is only guaranteed when the columns are combined; when taken individually the columns do not guarantee uniqueness.

Thank you~!

[pxl]

These is an key consist of more than one attribute to uniquely identify rows in a table known as composite key refer the cases more than one column used to specify the primary key of the table..

[Sreesri]

A compound key consists of more than one attribute to uniquely identify an entity occurrence. Each attribute, which makes up the key, is also a simple key in its own right.

[Muhammad Waseem]

Thank you to everyone for their answers very useful.

[komal14]

Composite key refers to cases where more than one column is used to specify the primary key of a table.

[kivi]

It is a combination of two or more columns in a table.

[HokuApps]

A composite key, in the context of relational databases, is a combination of two or more columns in a table that can be used to uniquely identify each row in the table. Uniqueness is only guaranteed when the columns are combined, when taken individually the columns do not guarantee uniqueness.

[damponting44]

A composite key, in the context of relational databases, is a combination of two or more columns in a table that can be used to uniquely identify each row in the table.

[david_smith01]

A composite key is a combination of more than one column to identify a unique row in a table. A composite primary key is a type of candidate key.

[ShehrozQasim]

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