When trying to determine the size of an area, you must look at the makeup of the information being stored in that area; remember, an area can contain one or more tables or indexes. The default area should generally be reserved for schema and sequence definitions, as this will make conversions easier in the future. The first step in this process, if you already have an OpenEdge database, is to do a table analysis using the PROUTIL utility. See OpenEdge Data Management: Database Administration for details.
The following sample output shows a portion of a table analysis:
After doing a table analysis, focus on record count (Records) and mean record size (Mean). Look at every table and split them according to mean record size. Each record contains approximately 20 bytes of record overhead that is included in the calculation of the mean.