(The JDK also contains a private JRE for use only by its tools; see "Private Versus Public JRE" for more information.) Install the JDK by doing the following: If you save the self-installing executable file to disk without running it from the download page at the web site, note the file size specified on the download page.
After the download has completed, verify that you have downloaded the complete file. If you downloaded either file instead of running it directly from the web site, double-click the installer's icon.
The way the architecture works with the Data Adapter is that you can make any changes you want to the filled Data Set, and it won't affect the database until you call the Update method.
When Update is called, the Data Adapter will attempt to execute each query (UPDATE, INSERT, DELETE) on every row of the Data Set that has been updated, inserted, and deleted.
It is time to insert data into your new employee table.