Access

Access component. Controls user access to the WebZ system. The component itself includes several sub-components: an Access server, an Access client, an mSQL database structure and server, and a JDBC driver.

JaSSI

Java Server-Side Interpreter (or JaSSI server). A multi-user, multi-threaded server that acts as the application manager for the WebZ system. JaSSI performs the following wide range of functions:

• processes and responds to HTTP messages received from a web server,
• dynamically loads and executes Java classes,
• sends Z39.50 requests to the ZBase server,
• maintains stateful data about each user and session,
• sends HTTP responses to the web server.

mSQL Database
mSQL Server

Mini-Structured Query Language database and server. Used by the Access component to store and retrieve patron information in order to control access to the WebZ system.

The Mini-SQL software included with WebZ is a product of Hughes Technology.

OpServe

Operations server. Controls and monitors WebZ system components. As user load on the system increases or decreases, the OpServe starts or stops system components to balance the user load. The ssadmin interface provides a text-based administrative interface for monitoring/controlling the WebZ system via the OpServe.

ssadmin

A text-based, administrative interface for monitoring and controlling WebZ system components through the OpServe.

WebZ Extension

Specialized software that works with a web server to direct requests to the JaSSI server in the WebZ system. The web server must be specifically configured to use the WebZ extension. WebZ includes extensions for the following web servers: Apache, Netscape Enterprise (and Fastrack), Microsoft IIS.

ZBase

The ZBase server manages search and retrieval access to local and remote Z39.50 resources. ZBase includes a Java interface that can be implemented to provide access to remote non-Z39.50 resources.

ZBroker

The ZBroker server allows remote/external Z39.50 clients to access the ZBase server.