What are the potential pitfalls of splitting data into multiple tables in PHP?

Potential pitfalls of splitting data into multiple tables in PHP include increased complexity in managing relationships between tables, potential performance issues due to the need for joins to retrieve related data, and the risk of data inconsistency if updates are not properly synchronized across tables. To mitigate these pitfalls, consider using database normalization techniques to ensure data integrity, implementing efficient indexing strategies to optimize query performance, and using transactions to maintain data consistency across multiple tables. 

// Example of using transactions to maintain data consistency across multiple tables

$pdo = new PDO("mysql:host=localhost;dbname=mydatabase", "username", "password");

$pdo->beginTransaction();

try {
    // Perform operations on multiple tables
    $pdo->exec("INSERT INTO table1 (column1) VALUES ('value1')");
    $pdo->exec("INSERT INTO table2 (column2) VALUES ('value2')");

    // Commit the transaction if all operations are successful
    $pdo->commit();
} catch (Exception $e) {
    // Rollback the transaction if any operation fails
    $pdo->rollBack();
    echo "Transaction failed: " . $e->getMessage();
}

Keywords

database normalization foreign keys SQL joins data redundancy performance optimization

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