Business Rules Management and Service Oriented Architecture: by Ian Graham

By Ian Graham

I purchased this booklet after cautious consedering all company ideas books, provided via Amazon. a sensible choice indeed.
As an firm architect I came upon topics like structure ideas, SOA and enterprise standards. enterprise principles in terms of structure is a far debated factor. So while I got here to be enthusiastic about a company principles undertaking for a consumer, i made a decision to arm myself. What did the booklet carry? Well:
- transparent and delightful writing style.
- solutions to FAQ correct from the preface.
- relate BR to SOA.
- sensible and administration point of view. know-how and ideas. now not too deep, to not hi-over.
- perception in prime items (be it anno 2007, yet more than enough for a benchmark).
- forty two (:-) answer patterns.
- a list for comparing BRMS's.

Excellent!

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Extra resources for Business Rules Management and Service Oriented Architecture: A Pattern Language

Sample text

Clearly we should be doing something differently. Another key statistic relevant to the failure of IT in the modern world is the cost of maintenance. It is widely estimated that well over 90% of IT costs are attributable to maintenance of existing systems rather than to their development. This is one of the reasons that object-oriented and component based development is so attractive: when the implementation of a data structure or function changes, these changes do not propagate to other objects.

These are not discussed further here, but one type of strategy is especially important for systems involving multiple, co-operating agents that each apply specialized knowledge to help solve a common problem. , 1996). This becomes important for BRMS, as we will see in Chapter 7. It should be apparent that adding rulesets to components is all that is necessary to make them into agents. Forward chaining (data-driven) rulesets enable reactive agents and backward chaining (goal-driven) r´egimes support deliberative agents.

Thus a BRMS can act as a mediator between service oriented applications and the legacy; it smooths the interactions between applications and acts as the decision management component for applications that are implemented as a set of services. These services interact with a decision management service which incorporates a rule engine; this, in turn, has access to the repository. As the intent of each service is distinct, so too is the service’s use of rules. Two services might use a common rule, but both may have unique rules or processes related to that rule.

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