Microsoft Visual Basic Design Patterns (Microsoft Professional Series)

The roles and functions of the elements of the Repository design pattern are as follows:

• PersistableObject Specifies an interface for reading and writing the state of an object to and from a data stream
• ConcretePersistableObject A class that implements the behavior of the PersistableObject interface for reading and writing its state to a data stream
• Repository Specifies an interface for storing and retrieving the state of a PersistableObject object to and from a data store
• ConcreteRepository A class that implements functionality for storing and retrieving the state of a PersistableObject object to a specific type of data store