*.edb - Exchange Database file
- checkpoint file - keeps track of which transactions have moved from
the transaction logs to the database - so in the event of the being an
interuption of those transaction logs being moved to the database, if
anything happens the checkpoint file can be used to refernece.
- 2 different types - the current transaction log e.g. E00.log, but
once this gets to 1mb it is re-created again and is renamed to e.g.
- Used if the server gets to the end of its storage space and has no
more room to wright any more information into transaction logs (There
should be 2 of these logs just for an emergency like that)
tmp.edb - Tempory workspace to store data before written to main *.edb database
not present in 2010 - i think its now E:\database\Accounts\Accounts.edb.IRS.RAW