WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

5.2.8 Data layer
For more information, refer to the following Web page:
http://publib.boulder.ibm.com/infocenter/wasinfo/v7r0/topic/com.ibm.web
sphere.nd.multiplatform.doc/info/ae/ae/welc6tech_msg.html
The data layer in the topology refers to a variety of back-end resources holding
real business data and logic for the enterprise. The enterprise applications
running on WebSphere Application Server access these resources to build
responses for the users and to update data based on user input. This can be a
database, an enterprise information system (EIS), a transaction monitor such as
CICS, a Web service, and so forth.
5.3 Topologies in detail
Due to the vast amount of configuration possibilities, WebSphere Application
Server provides many different configuration options to fit almost every
requirement. In this section we discuss some basic configuration topologies
(which can also be combined), depending on the requirements of your
environment.
Notes:
► WebSphere Application Server V7.0 allows you to create profiles either
graphically using the Profile Management Tool (pmt) or through the
manageprofiles command. As for traceability reasons, the
command-based creation is preferred. The samples in this chapter are
based on the manageprofiles command.
► On the z/OS platform, all the topologies introduced in this section profit
from the workload management capabilities offered from the Workload
Manager component and the WebSphere Application Server for z/OS. This
management allows you to set and keep performance-focused SLAs on a
transactional level.
For more information about the workload management capabilities for the
WebSphere Application Server for z/OS refer to 14.1.6, “Workload
management for WebSphere Application Server for z/OS” on page 428.
Chapter 5. Topologies 139