Programming Tutorials

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JDBC Components

By: Sunitha in JDBC Tutorials on 2007年03月15日 [フレーム]

JDBC includes four components:

The JDBC API

The JDBC API provides programmatic access to relational data from the Java programming language. Using the JDBC API, applications can execute SQL statements, retrieve results, and propagate changes back to an underlying data source. The JDBC API can also interact with multiple data sources in a distributed, heterogeneous environment.

The JDBC API is part of the Java platform, which includes theJava Standard Edition(Java SE ) and theJava Enterprise Edition(Java EE). The JDBC 4.0 API is divided into two packages:java.sqlandjavax.sql.Both packages are included in the Java SE and Java EE platforms.
JDBC Driver Manager

The JDBCDriverManagerclass defines objects which can connect Java applications to a JDBC driver.DriverManagerhas traditionally been the backbone of the JDBC architecture. It is quite small and simple.

The Standard Extension packagesjavax.namingandjavax.sqllet you use aDataSourceobject registered with aJava Naming and Directory Interface (JNDI) naming service to establish a connection with a data source. You can use either connecting mechanism, but using aDataSourceobject is recommended whenever possible.
JDBC Test Suite

The JDBC driver test suite helps you to determine that JDBC drivers will run your program. These tests are not comprehensive or exhaustive, but they do exercise many of the important features in the JDBC API.
JDBC-ODBC Bridge

The Java Software bridge provides JDBC access via ODBC drivers. Note that you need to load ODBC binary code onto each client machine that uses this driver. As a result, the ODBC driver is most appropriate on a corporate network where client installations are not a major problem, or for application server code written in Java in a three-tier architecture.