Defining database files
Specify the parameters of the database single and secondary files.
Note: this step is skipped if you checked the 
Single Database File option on previous step.
Primary database file
First set the length of the primary file (the file set on the previous step) in the Primary File Length field. This number shows when the new database file should be started.
To add a new database file set its name in the Secondary file name field, then set its length (to indicate where next file should be started) or starting at value (if you haven't set the previous file length) and click the Add button. The file is added to the file list. Now you can add more files in the same way or remove files from the list, clicking Delete.
