HP Driver for JDBC User's Manual

12 Chapter1

Introduction

JDBC

A typical JDBC Java application consists of a Java application or

applet, the JDBC Driver Manager, a vendor speciﬁc JDBC driver, and a

database. The JDBC Driver Manager is provided with the Java SDK

and its primary function is to load and register the vendor-speciﬁc

JDBC driver with the Java applications and then get out of the way.

The following diagram shows the various components of a client-server

JDBC application.

Figure 1-1 JDBC Client-Server Application

The HP Driver for JDBC is a vendor speciﬁc JDBC Driver that allows

Java applications to connect to ALLBASE/SQL or IMAGE/SQL

databases on MPE/iX or ALLBASE/SQL on HP-UX. The HP Driver for

JDBC is a Type 3 (Network-Protocol) driver, meaning the driver

translates the JDBC API into a DBMS-independent protocol on the

client-side, and then translates to the ALLBASE/SQL protocol on the

server. The driver components on the client-side are written in 100%

Pure Java, which provides the complete compatibility with all Java

Virtual Machines on all platforms.

The document will only describe the speciﬁcs necessary to use the HP

Driver for JDBC, and not JDBC and JDBC drivers in general. For a

comprehensive discussion of JDBC, refer to:

JDBC Database Access with Java: A Tutorial and Annotated Reference,

Graham Hamilton, Rick Cattell, and Maydene Fisher, Addison-Wesley

1997.

Java Application

JDBC Driver Manager

HP JDBC Server

ALLBASE/SQL or

IMAGE/SQL Database

Network

HP Driver for JDBC