Uma linguagem de gerência de regras como extensão da linguagem SQL3.

Abstract

This work uses an extended rule model which improves the expressiveness of SQL3 language, proposing the use of new variants for the ECA (Event-Condition-Action) rule model. Nevertheless, the extended model considers only the rule definition and it lacks other management operations, such as excluding or modifying rules, among others necessary mechanisms for these new rule types. In this work, a rule management language made of a set of operations for creating, eliminating and altering rules and its parts is proposed, in order to obtain greater reuse and maintainability of rules. For this purpose, the extended rule model is analyzed to identify its limitations and the properties that it supports to be considered in the rule management language proposed. The result of this analysis is used to define a rule repository, necessary for storing the rule types proposed. This repository stores a rules set which must be consistent, as well as data must be consistent in the database. Hence, a consistency rule set is defined. Besides, a rule management operations set is defined to help to handle rules and their elements, stored in the rule repository.