In PHP, what are the advantages and disadvantages of using DELETE and INSERT commands versus UPDATE commands for database operations involving Excel data?

When working with Excel data in a database using PHP, it is important to consider whether to use DELETE and INSERT commands or UPDATE commands for database operations. Advantages of using DELETE and INSERT commands include simplicity and the ability to completely replace existing data with new data. This can be useful when updating large amounts of data or when data needs to be completely refreshed. Disadvantages of using DELETE and INSERT commands include potential loss of data if not handled properly, as well as potentially slower performance compared to using UPDATE commands, which only modify existing data. UPDATE commands can be more efficient for updating individual records or making small changes to existing data.

// Example of using UPDATE command to update Excel data in a database
$mysqli = new mysqli("localhost", "username", "password", "database");

// Update data in Excel table
$updateQuery = "UPDATE excel_data SET column1 = 'new_value' WHERE id = 1";
$mysqli->query($updateQuery);

// Close database connection
$mysqli->close();