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How to set foreign keys in navicat premium

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Apr 06, 2024 am 09:36 AM

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The steps to set up foreign keys in Navicat Premium are as follows: enable foreign key constraints; select the main table, main field, slave table and slave field; set update and delete rules and cascading options; save changes and restart Navicat Premium.

How to set foreign keys in navicat premium

How to set up foreign keys in Navicat Premium

Step 1: Enable foreign key constraints

Open Navicat Premium and connect to your database.
Right-click the table on which you want to create a foreign key constraint and select Edit > Relationships.
In the Relationship dialog box, enable the Enable foreign key constraints checkbox.

Step 2: Create a foreign key

In the Main Table drop-down list, select the main table that contains the foreign key column.
In the "Main Field" drop-down list, select the column in the master table, which will reference the column in the slave table.
In the "Slave table" drop-down list, select the slave table that references the main table column.
In the "From field" drop-down list, select the column from the table that will be referenced.

Step 3: Set foreign key options

Update rules:Definition When a record in the main table is updated, How to update the corresponding record from the table.
Delete rules: Define how to delete the corresponding records in the slave table when a record in the main table is deleted.
Cascading update/deletion: Automatically cascade updates or deletes records from the table.

Step 4: Save changes

Click the OK button to save the changes.
Restart Navicat Premium to activate foreign key constraints.

Additional Tips

Make sure the columns in the main table have unique constraints or primary key constraints.
The data type of the columns in the slave table should be the same as the columns in the master table.
Foreign key constraints ensure data integrity and consistency.

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