IBM GC09-2830-00 manual v Middle-tier application server is employed

same machine as IBM eNetwork Communications Server or Microsoft SNA Server, and in many cases it can provide a less expensive and better-performing solution.

Contact your authorized IBM reseller for additional information about DB2 Connect Enterprise Edition.

Accessing Host or AS/400 DB2 Data from the Desktop Using DB2 Connect Enterprise Edition

A DB2 Connect server enables DB2 clients on a LAN access to data that is stored on host or AS/400 systems.

DB2 Universal Database Enterprise Edition and DB2 Universal

Database Enterprise - Extended Edition include the DB2 Connect

Server Support component. All references to DB2 Connect Enterprise

Edition also apply to the DB2 Connect Server Support component.

DB2 Connect Enterprise Edition is most appropriate for environments where:

vHost and AS/400 database servers do not support native TCP/IP connectivity and direct connectivity from desktop workstations via SNA is not desirable (see Figure 3 on page 10).

vApplication is implemented using data-aware Java applets (see Figure 7 on page 15).

vWeb servers are used to implement web-based applications (see Figure 8 on page 17, Figure 7 on page 15 and Figure 6 on page 13).

vMiddle-tier application server is employed.

vTransaction monitor such as CICS, Encina, Microsoft Transaction Server (MTS), Tuxedo, Component Broker, and MQSeries are used (see Figure 4 on page 11).

Applications are provided with transparent access to host or AS/400 data through a standard architecture for managing distributed data. This standard is known as Distributed Relational Database Architecture (DRDA). Use of DRDA allows your applications to establish a fast connection to host and AS/400 databases without expensive host components or proprietary gateways.

A great deal of the data in many large organizations is managed by DB2 for AS/400, DB2 for MVS/ESA, DB2 for OS/390, or DB2 for VSE & VM. Applications that run on any of the supported platforms can work with this data transparently, as if a local database server managed it. DB2 Connect Enterprise Edition is required for supporting applications which access host or AS/400 data and exploit transaction monitors (for example, CICS, Encina, Microsoft Transaction Server) as well as applications that are implemented as

8Quick Beginnings