Is business key and primary key the same?

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 is the 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 another name for primary key?

primary key (primary keyword) A primary key, also called a primary keyword, is a key in a relational database that is unique for each record. It is a unique identifier, such as a driver license number, telephone number (including area code), or vehicle identification number (VIN).

What is the difference between key and primary key?

A primary key is a column, or a combination of columns, that can uniquely identify a row. It is a special case of unique key. A table can have at most one primary key, but more than one unique key. When you specify a unique key on a column, no two distinct rows in a table can have the same value.

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