Adding data to a table in SQL is a crucial part of database management. The process isn't called "append" in the SQL standard; instead, you use the `INSERT` statement. This statement allows you to add new rows to an existing table. The `INSERT` statement is versatile and can handle various data types and complexities. Understanding how to use `INSERT` correctly is essential for populating your database with accurate and relevant information. Proper data insertion is critical for maintaining data integrity and ensuring the accuracy of your database queries. The `INSERT` statement is a fundamental part of any SQL developer's toolkit.