What is JDBC? – PB Docs 126

What is JDBC?

The JDBC API

Java Database Connectivity (JDBC) is a standard application programming
interface (API) that allows a Java application to access any database
that supports Structured Query Language (SQL)
as its standard data access language.

The JDBC API includes classes for common SQL database
activities that allow you to open connections to databases, execute SQL commands, and process results.
Consequently, Java programs have the capability to use the familiar SQL programming model of issuing SQL statements and processing the
resulting data. The JDBC classes are included in Java 1.1+ and
Java 2 as the java.sql package.

The JDBC API defines the following:

  • A library of JDBC function calls that
    connect to a database, execute SQL statements,
    and retrieve results

  • A standard way to connect and log in to a DBMS

  • SQL syntax based
    on the X/Open SQL Call
    Level Interface or X/Open and SQL Access
    Group (SAG) CAE specification (1992)

  • A standard representation for datatypes

  • A standard set of error codes

How JDBC APIs are implemented

JDBC API implementations fall into two broad categories: those
that communicate with an existing ODBC driver (a JDBC-ODBC bridge)
and those that communicate with a native database API (a JDBC driver
that converts JDBC calls into the communications protocol used by
the specific database vendor). The PowerBuilder implementation of
the JDBC interface can be used to connect to any database for which
a JDBC-compliant driver exists.

The PowerBuilder JDB interface

A Java Virtual Machine (JVM) is required to interpret and
execute the bytecode of a Java program. The PowerBuilder JDB interface
supports the Java Runtime Environment (JRE) versions 1.2 and later.


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