Sequences in MySQL help ensure that values aren't repeated, and many applications require database tables to have an incrementing "id" column. The MySQL syntax offers several ways to avoid repeating ...
FOREIGN KEY (plr_of_match) REFERENCES player_mast(player_id) on delete cascade, FOREIGN KEY (referee_id) REFERENCES referee_mast(referee_id) on delete cascade, FOREIGN KEY (venue_id) REFERENCES soccer ...
CHANGE COLUMN company_name company_name VARCHAR(255) NOT NULL; ...
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