Database File Structure
Exchange Server 2007 databases (also called mailbox stores) consist of a single file that has an .edb extension. The database file holds everything related to a user’s mailbox, including e-mail messages, voice mail messages, faxes, Message Application Programming Interface (MAPI) content, attachments, and more. Exchange Server 2007 no longer relies on the streaming (.stm) file to hold non-MAPI content. Exchange Server databases are stored in an Extensible Storage Engine (ESE) database format. (ESE is discussed later in this chapter.)
The .edb database holds messages from MAPI clients such as Microsoft Outlook. MAPI clients access these messages without a conversion process running on the server. The rich text file is the ...
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