Tag: architecture

Defines an interface for creating an object, but let the subclasses decide which class to instantiate.It let the instantiation differ to subclasses.

Define the skelton of an algorithm in an operation, deferring some steps to subclasses. It lets subclasses redefine certain steps of an algorithm without changing the algorithm structure.

enables loose coupling between the business and resource tiers and encapsulates all the data access logic to create, retrieve, delete, and update data from a persistent store

Simpliflies the client access to the business tier components and eliminates client's direct dependency on multiple business objects