Final answer:
The maximum number of characters for a table alias varies by DBMS; Oracle allows 30, while MySQL supports up to 256.
Step-by-step explanation:
The maximum number of characters allowed in a table alias depends on the specific database management system (DBMS) that you use. However, most modern DBMS such as Oracle, MySQL, and SQL Server allow table aliases that are relatively long. For instance, Oracle has a limit of 30 characters for table aliases, while some versions of SQL Server and MySQL have a higher limit, with MySQL supporting up to 256 characters. It's always best to consult the documentation for your specific DBMS for the most accurate information.