How can developers ensure that changes made to one table reflect accurately in another table in a PHP application?

When changes are made to one table in a PHP application, developers can ensure that these changes reflect accurately in another table by using database triggers. By creating triggers for the necessary actions (such as insert, update, or delete) on the first table, developers can automatically update the second table accordingly. 

// Create a trigger in the database to update the second table when changes are made to the first table
$pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");

$pdo->exec("
    CREATE TRIGGER update_second_table
    AFTER INSERT ON first_table
    FOR EACH ROW
    BEGIN
        INSERT INTO second_table (column1, column2)
        VALUES (NEW.column1, NEW.column2);
    END
");

Keywords

database SQL triggers PHP synchronization

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