This section defines terms applicable to page size and gives calculations for estimating the amount of disk space needed for tables. These are approximations—your table can be much larger, depending on compression and the size of key values.

The calculations are based on newly modified tables. Using the number of rows in the table to determine table size becomes less accurate after data has been deleted or added.

VDBA provides a calculation tool that allows you to calculate disk space requirements for any storage structure quickly and easily. For procedures, see online help.