Wrap-Up

This chapter introduced the SQL and the JDBC API. You learned basic SQL to retrieve data from and update data in a database. You examined the contents of a sample database and learned how to set it up for use with the MySQL database management system. You also learned how to access and manipulate the MySQL database via the JDBC API. Then, you learned the new RowSet interface introduced in J2SE 5.0. In the next chapter, we demonstrate how to build Web applications using Java servlets. We also introduce the concept of a three-tier application, in which an application is divided into three pieces that can reside on the same computer or can be distributed among separate computers across a network, such as the Internet.