Web Enabling Your HP 3000

A servlet is a user-supplied extension of the web server. Servlets are to Web servers as applets

are to Web browsers. The servlet API provides web application developers with a mechanism

for extending the functionality of a web server. Servlets are an effective substitute for CGI pro-

grams. They provide a way to generate dynamic documents that are both easier to write and

faster to run.

The next phase of MPE/iX Web Server will support Servlets.

For more information or tutorials on Java Servlets, please visit the following sites:

http://java.sun.com/docs/books/tutorial/servlets/index.html

http://jazz.external.hp.com/papers/java/index.html

ODBC

ODBC is an application-programming interface (API) that is defined by Microsoft. ODBC pro-

vides a standard interface for accessing a variety of databases using SQL such as IMAGE/SQL

and ALLBASE/SQL. An application that uses the ODBC interface can connect to any database

over the network that has an ODBC driver, usually with no changes to the application. The most

popular web development middleware that provide database connectivity are using ODBC.

HP has provided a 32-bit ODBC driver with ODBC Link/SE from M.B. Foster Associates Ltd.

since MPE/iX 5.5 Express 3. ODBCLink/SE connects the client to the server with a collection of

dynamic link libraries (DLLs) on the client and runs under NT. Client application requests are

routed over the network to an ALLBASE/SQL or IMAGE/SQL database server, and replies are

returned to the client application. A server listener process establishes the connection between

the client application and the target HP e3000 database server. With ODBCLink/SE, you can

develop web-based applications, generate reports, and query ALLBASE/SQL or IMAGE/SQL on

the server.

Other ODBC drivers are also available on the HP e3000:

• LinkWay from CSL Business Solutions provides an ODBC interface to IMAGE/SQL and

ALLBASE/SQL databases on HP e3000s, and allows a PC user with Lotus 1-2-3 or Microsoft

Excel to use the remote data as though on a local PC.

• ODBC/32 from MiniSoft provides direct access to Image and TurboIMAGE databases

bypassing ALLBASE or IMAGE/SQL. ODBC/32 supports features such as linking to multiple

databases, KSAM, and MPE files.

• DataExpress for Client-Server from M. B. Foster Associates moves the responsibility for

data access and updates to today’s popular Web server applications using a thin client model.

The product provides secure, reliable access to data through browser clients and multi-

threaded access to host-based data, ensuring fast and reliable data access useable in MTS/IIS

environments.