What are alternative keys?

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 and example?

All the keys which are not primary key are called an Alternate Key. Example: In this table, StudID, Roll No, Email are qualified to become a primary key. But since StudID is the primary key, Roll No, Email becomes the alternative key.

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.

How do you use alternate keys?

Rules for Alternate Key1The alternate key is a part of a candidate key but not a part of the primary key.2Defined by “UNIQUE”.3Alternate keys values should be unique.4If a table consists of only one candidate key, then it becomes the primary key; there will be no alternate key.How to Use Alternate Key in SQL? - eduCBA

What is alternate key in artificial intelligence?

Alternate Key: All Candidate Keys excluding the Primary Key are known as Alternate Keys. Artificial Key: If no obvious key, either stand alone or compound is available, then the last resort is to simply create a key, by assigning a unique number to each record or occurrence.

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