Tag: architecture

Conditional, Structural, Behavioral

Ceational, Structural, Behavioral

Factory, Command, Strategy

Behavioral, Observer, Factory

Defines multiple access points for a singleton

supports multiple visibility forms for a singleton

allows the creation of multiple class instances in the future without affecting the clients of the singleton class

All of the above

Low coupling, High cohesion

High Cohesion, Indirection

Low Coupling, Polymorphism

High Cohesion, Polymorphism

Allows you to represent composite objects in the form of a hierarchy

It uses independent interfaces for representing individual and composite objects

It uses an individual object that is composed of two or more composite objects

It represents just a collection of different objects

Adapter pattern is used to access facades

The Adapter pattern adds an indirection object for low coupling

The Façade pattern hides the complexity of a subsystem from a client

None of the above

Assigns responsibility to an intermediate object

Creates a convenient class that supports high cohesion and low coupling

Creates a convenient class that supports low cohesion and high coupling

Protects the system from unexpected variations

Solutions to common problems

Guiding Principles for designing a system

General concepts of designing

None of the above

Handles the message generated when a system event or operation takes place

assigns the responsibility for creating new class instance or object

Determine how a system handles conditional variations

Creates a convenient class

Avoid direct coupling

Maintain low coupling and high reusability

None of the above

Both A and B

Is used in the process of alternative evaluation

Determine how a system handles conditional variations

Assign responsibilities to an intermediate object

Defines guiding principles for assigning responsibilities to objects