Question

You have multiple foreign keys in a table

Answer 1

Answer:

A table may have multiple foreign keys, and each foreign key can have a different parent table. Each foreign key is enforced independently by the database system. Therefore, cascading relationships between tables can be established using foreign keys.

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Answer 2

Answer:

• A table may have multiple foreign keys, and each foreign key can have a different parent table. Each foreign key is enforced independently by the database system. Therefore, cascading relationships between tables can be established using foreign keys.

• How many foreign keys can be there in a table?

253

A table can reference a maximum of 253 other tables and columns as foreign keys

• How do I create a foreign key in the same table?

A foreign key is a column or a group of columns in one table that uniquely identifies a row of another table (or the same table in case of self-reference). To create a foreign key, you use the FOREIGN KEY constraint

 

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