What is an alternate key answer?

Question

Answer: An alternate key is a key associated with one or more columns whose values uniquely identify every row in the table, but which is not the primary key. 15 февр. 2020 г.

What is alternate key 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.

What is a alternate key Class 10?

If any table have more than one candidate key, then after choosing primary key from those candidate key, rest of candidate keys are known as an alternate key of that table.

What is alternate key Mcq?

Alternate Key: Out of all candidate keys, only one gets selected as primary key, remaining keys are known as alternate or secondary keys. Composite Key: A key that consists of more than one attribute to uniquely identify rows (also known as records & tuples) in a table is called composite key.

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