20.5. Data Services Tier
The data-services tier in a Windows DNA n-tier application can consist of data residing in several different kinds of stores. The two most prominent products that provide data services in BackOffice are Microsoft SQL Server databases and Microsoft Exchange Server directories and information stores. The following discussion briefly introduces the structural differences between them and how they are accessed.
MICROSOFT EXCHANGE SERVER DATA SERVICES
Microsoft Exchange implements the Messaging Application Programming Interface (MAPI) and directory-access functions for much of its functionality, though newer technologies such as Collaboration Data Objects (CDO) and Active Directory Service Interface (ADSI) are more easily ...
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