Dimension build rules files specify how, during dimension builds, dimensions and members are processed. After you create a rules file, you use the file and the data source to perform a dimension build.
To create a dimension build rules file:
If you are creating a dimension, name the dimension.
If necessary, set the properties of the members and dimensions you are building.
If necessary, set record and field operations that, as data is loaded, change the data-source members.
Set field type information, including field type, field number, and dimension.
“Creating Rules Files” in the Oracle Essbase Database Administrator's Guide