In Sun Master Index, you define the data structure of the business objects to be stored and cross-referenced. In addition, you define the logic that determines how data is updated, standardized, weighted, and matched in the master index database. The structure and logic you define is located in a group of XML configuration files that you create using the wizard. These files are created within the context of a NetBeans project, and can be further customized using the either the Master Index Configuration Editor or the NetBeans XML editor. This document describes the structure of the XML files and how each configuration option affects the master index application.