Typically, a Business Rules Engine (BRE) consists of the following components:

1.    Rules Editor: Used to design, validate and simulate the business rules based on some predefined conditions using a user interface.

2.    Rules Repository: Used to store the business rules in a centralized repository so that multiple applications can have access to these rules.

3.    Rules Engine: Used to execute the business rules designed using the Rules Editor. These rules are read from the centralized rules repository.

4.    Rules Administration Component: Used to administer the business rules, modify them and update the business rules repository if the business process changes. Generally, the Rules Administrator is a web editor used for remote administration of these business rules.