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

Question

These are two different kinds of keys. The counter is a surrogate key, and the "business key" is a natural key. All tables in a relational database should (not will, just should) have a declared primary key (PK). This key is a column or group of columns that will uniquely identify a row in the table. 18 сент. 2002 г.

What's a business key?

A Business key is the column or set of columns that uniquely identifies each row in an entity. Through definitions of business keys, you guarantee that the information held in the key column (or columns) of each record will differentiate it from all the other records in the same entity (avoid duplicates).

What is business key example?

For example business keys are customer code in a customer table, composite of sales order header number and sales order item line number within a sales order details table.

What is a business key in data warehouse?

Each dimension table consist of its business key attribute, the one that uniquely identifies a row in the table. The business key is the attribute that is known in the operational system by the business users.

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

Every row would have both a business key and a surrogate key. The surrogate key identifies one unique row in the database, the business key identifies one unique entity of the modeled world.

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