Foreign key access

1. What is a foreign key in access?
2. How do you create a foreign key in access?
3. How do you find the foreign key in access?
4. What is primary key and foreign key in access?

What is a foreign key in access?

The FOREIGN KEY constraint is used to link records of one table to the records of another. ... This enforces referential integrity since a foreign key value in one table cannot exist if it does not already exist as a primary key in another table.

How do you create a foreign key in access?

Drag a field (typically the primary key) from one table to the common field (the foreign key) in the other table. To drag multiple fields, press the CTRL key, click each field, and then drag them.

How do you find the foreign key in access?

2 Answers

1. go into the design of the table.
2. select the foreign key field.
3. go to the lookup tab.
4. change the display control value from to combo box to text box.
5. go to the general tab.
6. delete the caption text.

What is primary key and foreign key in access?

Primary Key. Foreign Key. A primary key constrain is a column or group of columns that uniquely identifies every row in the table of the relational database management system. Foreign key is a column that creates a relationship between two tables. It helps you to uniquely identify a record in the table.