- Set MediaWiki to read content meta-data from the new content table.
Set MediaWiki to not populate the ar_text and ar_flags fields.(this has been the case since MW 1.5)
- Watch for performance issues caused by adding a level of indirection (a JOIN) to revision loads.
- Set MediaWiki to insert content meta-data ONLY into the new columns in the content table. (To allow this, the old columns must have a DEFAULT).
- Enable MCR support in the API and UI (as far as implemented).
This enables, but does not require: Drop the redundant columns from the page, revision, and archive tables, see Removing Redundant Information above. Schema changes desired for revision storage optimization may be applied at the same time.