When initially installed, the Pega 7 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.