How do you define alternate key in SQL?

How do I create an Alternate Key in SQL?

ALTERNATE Keys in SQL are defined using the SQL constraint UNIQUE. UNIQUE(col_name(s)) col_name(s): The name of the column(s) in the table which need to be unique.

How do you define Alternate Key?

An alternate key (Alt key) is a key that is present on most computer keyboards and is considered a modifier key that can used similarly to the shift or control keys. In other words, the alternate key provides alternate input and operations when pressed in combination with other keys.

What is an Alternate Key in SQL?

Alternate or Secondary keys in SQL Alternate keys are those candidate keys which are not the Primary key. There can be only one Primary key for a table. Therefore all the remaining Candidate keys are known as Alternate or Secondary keys.

How do I set up Alternate Key?

Configuring an alternate key1Identify the field(s) of an object to use as the alternate key.2Select the object in the Database Configuration application.3Create a unique index for the field(s) in the Indexes tab.4Specify this index in the Alternative Key field in one of the following tabs:Configuring an alternate key - IBM