Question

Primary key of one relation acts as reference key to another relation.
State trúe or false.​

Answer 1

Explanation:

Reeta Sahoo, Gagan Sahoo · Computers

To create relationship between two tables (a) drag the primary key of a table into foreign key of another table (b) drag the foreign key so it is false

Answer 2

This statement is false.Foreign Key acts as a reference key to another relation.

• To create connections between two tables, we use foreign keys. Each value in a column or collection of columns containing a foreign key must match the Primary Key of the referential table in order for the foreign key to function.
• Data integrity and referential consistency are both supported by foreign keys.
• To guarantee that the data in the particular column is unique, a primary key is employed. NULL values are not permitted in columns.
• It is either a column from an existing table or one that the database specially creates using a predetermined sequence.
• To make sure the data in a given column is unique, a primary key is employed. NULL values cannot exist in a column. It is either an already-existing table column or a column that the database deliberately creates in accordance with a predetermined sequence.

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