Hi friend,


Coupling measures the strength of the physical relationships among the items that comprise an object Cohesion measures the logical relationship among the items that comprise an object Interface coupling is the coupling between an object and all objects external to it. Interface coupling is the most desirable form of object coupling. Internal coupling is coupling among the items that make up an object.

A smart way to work with relational databases is to have Eiffel objects directly mapping relational tables. Three EiffelStore classes enable this coupling:

* DB_REPOSITORY objectsdescribe a relational table and allow Eiffel to create objects mapping database tables.
* DB_STORE works directly with DB_REPOSITORY objects to insert data into relational tables.
* DB_SELECTION canmap a database query result into Eiffel objects.


repository: DB_REPOSITORY
...
create repository.make ("CONTACTS")
repository.load
if repository.exists then
...
end

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Thanks

Analyzing object-oriented systems in order to evaluate their quality gains its importance as the paradigm continues to increase in popularity. Consequently, several object-oriented metrics have been proposed to evaluate different aspects of these systems such as class coupling. In object-oriented design, three types of coupling may exist between classes: inheritance coupling, interaction coupling, and component coupling. This paper presents a tool for measuring inheritance coupling in object-oriented systems.