Business Rules Management and Service Oriented Architecture: by Ian Graham

By Ian Graham

I purchased this e-book after cautious consedering all enterprise ideas books, provided through Amazon. a sensible choice indeed.
As an firm architect I came upon subject matters like structure rules, SOA and enterprise specifications. enterprise ideas relating to structure is a miles debated factor. So whilst I got here to be serious about a company ideas venture for a buyer, i made a decision to arm myself. What did the e-book bring? Well:
- transparent and delightful writing style.
- solutions to FAQ correct from the preface.
- relate BR to SOA.
- practical and administration standpoint. know-how and ideas. now not too deep, to not hi-over.
- perception in top 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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Additional resources for Business Rules Management and Service Oriented Architecture: A Pattern Language

Sample text

An object is something with a name (identity) and responsibilities of three kinds: responsibilities for remembering values (attributes); responsibilities for carrying out actions (operations/methods); and responsibilities for enforcing rules concerning its attributes and operations (often referred to as constraints). An interface is a list of the services that an object offers. A type is such a list plus the rules that the object must obey (its specification). Contrast this with the notion of a class.

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. Thus maintenance is localized to the changed component(s) or service(s). However, this benefit does not extend to changes to the business rules if they are scattered around the application or tightly bound to interface definitions.

This will substantially affect the type of BRMS product that they choose. 5 The Benefits The benefits of adopting a business rules management system may be summarized as follows: ■ Faster development. ■ Faster maintenance, which is particularly relevant in service oriented architectures, where the maintenance of a rules component is addressed outside of the wider IT maintenance context. ■ Clearer auditability. ■ More reusable business logic. 13 14 Chapter 1 ■ Greater consistency across the enterprise.

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