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Some JPA providers support other database models, though this is outside the scope of JPA's design. The introduction section of the JPA specification states: "The technical objective of this work is to provide an object/relational mapping facility for the Java application developer using a Java domain model to manage a relational database."
Jakarta EE, formerly Java Platform, Enterprise Edition (Java EE) and Java 2 Platform, Enterprise Edition (J2EE), is a set of specifications, extending Java SE [1] with specifications for enterprise features such as distributed computing and web services. [2]
Jakarta Connectors (JCA; formerly known as Java EE Connector Architecture and J2EE Connector Architecture) are a set of Java programming language tools designed for connecting application servers and enterprise information systems (EIS) as a part of enterprise application integration (EAI).
The resource manager typically has its own API for manipulating the resource, for example the JDBC API to work with relational databases. In addition, the resource manager allows a TP monitor to coordinate a distributed transaction between its own and other resource managers.
Oracle has its own spin where creating a user is synonymous with creating a schema. Thus a database administrator can create a user called PROJECT and then create a table PROJECT.TABLE. Users can exist without schema objects, but an object is always associated with an owner (though that owner may not have privileges to connect to the database).
An example of this is the KPRB (Kernel Program Bundled) driver [16] supplied with Oracle RDBMS. "jdbc:default:connection" offers a relatively standard way of making such a connection (at least the Oracle database and Apache Derby support it). However, in the case of an internal JDBC driver, the JDBC client actually runs as part of the database ...
Oracle WebLogic Server forms part of Oracle Fusion Middleware portfolio and supports Oracle, IBM Db2, Microsoft SQL Server, MySQL Enterprise and other JDBC-compliant databases. Oracle WebLogic Platform also includes: Formerly, JRockit, a custom JVM (discontinued with some components merged into HotSpot/OpenJDK following Sun acquisition) [26]
Support is provided for all popular data access frameworks in Java: JDBC, iBatis/MyBatis, [32] Hibernate, [32] Java Data Objects (JDO, discontinued since 5.x), [32] Jakarta Persistence API (JPA), [32] Oracle TopLink, Apache OJB, and Apache Cayenne, among others. For all of these supported frameworks, Spring provides these features