Create an EUL mandatory if one does not exist already.

3-8 Oracle Fusion Middleware Administrators Guide for Oracle Business Intelligence Discoverer What is involved in maintaining a Discoverer system with a relational data source? Having implemented a Discoverer system with a relational data source, you will probably find that a small amount of ongoing maintenance is required to make sure that Discoverer continues to meet users’ requirements. Typically, you will continue to refine business areas by: ■ adding new item classes, to support new lists of values, alternative sorts, and drill to detail for more information, see Chapter 9, Maintaining Items and Item Classes ■ adding new joins, to combine folders that were not automatically joined when tables were loaded from the database and which users now need access to in the same worksheet for more information, see Chapter 10, Creating and Maintaining Joins ■ adding new optional and mandatory conditions, to restrict the number of rows returned in a folder for more information, see Chapter 12, Creating and Maintaining Conditions ■ adding new calculated items, to provide users with ready-made computations that were not initially required for more information, see Chapter 11, Creating and Maintaining Calculated Items ■ adding new complex folders, to simplify query creation for more information, see Chapter 6, Creating and Maintaining Folders ■ adding new custom folders, to meet users’ requirements that cannot be met using conventional folders for more information, see Chapter 6, Creating and Maintaining Folders ■ adding new hierarchies, to enable users to analyze data in new ways for more information, see Chapter 13, Creating and Maintaining Hierarchies ■ adding new summaries to resolve performance issues with particular queries for more information see Chapter 14, Managing Summary Folders In addition to the above, you will probably have to change which users have access to which business areas and the operations that individual users can perform in those business areas. For example: ■ when a new user joins, you will have to grant them access to the business areas they need to do their job ■ when an existing user changes jobs or departments, you might have to grant them access to new business areas, or revoke their access from previous business areas For more information, see Chapter 7, Controlling Access to Information . What are the prerequisites for using Discoverer Administrator? This section describes the system and data access prerequisites for using Oracle Business Intelligence Discoverer Administrator and contains the following topics: ■ What are the system prerequisites? ■ What are the data access prerequisites?