Design Patterns: Cohesion And Coupling

Posting a few articles regarding basic design frameworks and patterns. This one is from MSDN Magazine regarding cohesion and coupling.

1. Decrease Coupling - Aspire to design loosely coupled classes or class which are not dependent on one another.
2. Eliminate Inappropriate Intimacy - Careful with business logic class which needs too much information regarding data access.
3. Increase Cohesion - Make the code inside a class directly related.

Observation of decrease coupling/increase cohesion creates these positive benefits:

• Keep things that have to change together as close together in the code as possible.
• Allow unrelated things in the code to change independently.
• Minimize duplication in the code.