What is the use of alternate key?

Question

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. 4 июн. 2018 г.

What is alternative key in database?

ALTERNATE KEYS is a column or group of columns in a table that uniquely identify every row in that table. A table can have multiple choices for a primary key but only one can be set as the primary key. All the keys which are not primary key are called an Alternate Key.

What is alternate key in simple words?

The alternate key is a combination of one or more columns whose values are unique. A table consists of one or more Candidate keys, in which one will be Primary Key and rest of the keys, are called as Alternate keys. Alternate Key is not part of the primary key.

What is alternate key in SQL with example?

Alternate key is a secondary key it can be simple to understand by an example: Let's take an example of student it can contain NAME, ROLL NO., ID and CLASS. Here ROLL NO. is primary key and rest of all columns like NAME, ID and CLASS are alternate keys.

Expert · Answer