When initially installed, the Pega Platform contains indexes that provide fast alternate access to rule information through the use of alternate (secondary) keys. These indexes have low or zero turnover (additionss and deletionss) in a production system. Other indexes support system operations such as locking and usage tracking, and can have high turnover.
For example, the database index flow_pyClassName associates flow names to Work- classes, and changes only when flows are added or deleted.
Note: Database indexes are not the same as instances of concrete classes derived from the Index- base class. Their purpose and function are similar; however, database indexes are supported by database software.
Index- objects, created by Declare Index rules (Rule-Declare-Index rule type), support application-specific access.