What is the alternate key in DBMS?

Question

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. 25 июн. 2022 г.

What is a 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 table?

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.

What is alternate and primary key?

Primary keys - Contain one or more columns whose combined values uniquely identify every row in a table. Each table can have only one primary key. Alternate keys - Contain one or more columns whose combined values uniquely identify every row in a table.

Where is the alternate key?

On all keyboards, the Alt key is located in the bottom row, directly to the left of the space bar. In addition, English-language keyboards have a second Alt key (one to the left and one to the right of the space bar) to support ten-finger typing. English-language keyboards have two Alt keys.

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