Now first create two tables to implement foreign keys as follows.įirst create a dist_unit with different attributes by using the following statement as follows.Ĭode: create table dist_unit (common_id integer primary key, unit_name text not null) In the event that any current key is refreshed from the parent table, the exchange comes up short toward the finish of the inquiry.
If any existing related key is deleted at that time all ongoing executions end. On delete: This is the default parameter in foreign keys.When we use foreign key in table at that time we can control the operation by using different parameter as follows. If we need to disable foreign key at that time we can use the following command as follows. So when we need to enable foreign key at that time we can use the following command as follows. Basically foreign key constraints compile with SQLite library, so that purpose SQLite uses PRAGMA foreign_keys command to enable or disable the foreign key constraint at the run time.
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