About
Before building a rules file, you must decide whether the rules file will be used for :
- data load and dimension build,
- or for only data load,
- or for only dimension build.
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Use same rules files when
Use the same rules file for both data load and dimension build if you plan to load the data source and build new dimensions simultaneously.
Use separate rules files when
Use separate rules files for data load and dimension build under any of the following circumstances:
- To build an outline from scratch
- To perform different field operations during the data load and dimension build
- To reuse the data load or dimension build rules file separately
- To use data sources that contain no data values, only dimensions
Restrictions
Once you create a rules file, you cannot separate it into two rules files. Similarly, you cannot merge two rules files into one file.