Anonymous Asked in Cars &Transportation · 2 weeks ago

Can a business key be used as a primary key?

Sometimes database designers uses two unique keys on each table, a "business key," for example orderid, and a "counter", used as the primary key. Why? These are two different kinds of keys. The counter is a surrogate key, and the "business key" is a natural key. 18 сент. 2002 г.


What is a the difference between a primary key and a business key?

So the difference between a primary key and a business key in Bizagi, is that the primary key is a consecutive number defined automatically by Bizagi, and a business key is an attribute of an entity with unique values, which is defined by users.

Which key can be used as primary key?

Primary key is the Candidate key selected by the database administrator to uniquely identify tuples in a table. Out of all the Candidate keys that can be possible for a table, there can be only one key that will be used to retrieve unique tuples from the table. This Candidate key is called the Primary Key.

What is a primary key in business?

Primary keys The primary key keeps track of data in a table. The primary key is composed of up to 16 fields in a record. The combination of values in fields in the primary key makes it possible to uniquely identify each record.

Which type of key Cannot be a primary key?

However, when combined with the other column or columns the combination of composite keys become unique. The purpose of the compound key in database is to uniquely identify each record in the table. In this example, OrderNo and ProductID can't be a primary key as it does not uniquely identify a record.

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