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SQL summary

SQL summary

This SQL tutorial has taught you a standard computer language used to access and manipulate database systems.

We've learned how to use SQL to perform queries in the database, retrieve data, insert new records, delete records, and update records.

We've learned how to create databases, tables, indexes via SQL, and how to undo them.

We have learned the most important SQL Aggregate functions.

SQL is a standard language for database systems that work with these database systems including MS SQL Server, IBM DB2, Oracle, MySQL and MS Access, and so on.

We have learned SQL, learn what the next step?

We recommend the following to learn ADO or PHP MySQL.

If you want to learn about ADO knowledge, please visit our ADO tutorial .

If you want to learn knowledge about MySQL, please visit our PHP tutorial .