This document provides an overview of CDS/ISIS, an information storage and retrieval system developed by UNESCO. CDS/ISIS allows users to design database structures, create and edit records, and search and retrieve information. It can manage standalone or networked databases. The document discusses basic features and functions of CDS/ISIS, including installing it, running it, creating and editing databases, and searching and retrieving records. It also describes how CDS/ISIS can be used beyond a single computer by publishing to CD-ROMs, sharing over a local network, or publishing databases on the web.