Update automatically about the data warehousing

I have done data warehousing using owb, but what way or how can we let the cube update automatically when the original tables changed? thank you

You'll need to building mappings to load your source data to your cubes and then one option is to schedule these to run via a process flow and scheduled job.
Search the Net for 'Oracle OWB by example' for some tutorials.
Regards
Si

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