This page provides a starting point for finding information about data access. Various enterprise information systems (EIS) use different methods for storing data. These backend data stores might be relational databases, procedural transaction programs, or object-oriented databases.
The flexible IBM® WebSphere® Application Server provides several options for accessing an information system backend data store:
Service Data Objects (SDO) simplify the programmer experience with a universal abstraction for messages and data, whether the programmer thinks of data in terms of XML documents or Java objects. For programmers, SDOs eliminate the complexity of the underlying data access technology such as, JDBC, RMI/IIOP, JAX-RPC, and JMS, and message transport technology such as, java.io.Serializable, DOM Objects, SOAP, and JMS.
Deploying a data access application includes more than installing your web application archive (WAR) or enterprise archive (EAR) file onto a server. Deployment can include tasks for configuring your application to use the data access resources of the server and overall runtime environment.
The application server uses the classes and other code that comprise a resource adapter archive (RAR) to support the resource adapters that you configure.
Use Structured Query Language in Java (SQLJ) to develop data access applications that connect to DB2® databases. SQLJ is a set of programming extensions that enable you to use the Java programming language to embed statements that provide SQL (Structured Query Language) database requests.
These administrative tasks consist primarily of configuring the objects, or resources, through which applications connect with a backend, and tuning those resources to handle the volume of connection requests.