Strategy Design Pattern

Factory Design Pattern

Template Design Pattern

Command Design Pattern

Multiple developers

can work simultaneously on project.

Creational pattern creates

an object by calling a method instead of a constructor. 

Cannot update any

class

Create only one

object at time

Usability testing

Component testing

Acceptance testing

Unit testing

System testing

It focuses on risk assessment in each iteration

It elaborate requirements by extra analysis

It focuses on business models 

It focusses on planing of each iteration

Recursion

Overload

Override

Reuses existing components and does not need to write their own code from scratch.

Writes their own code even if similar components exist.

Does not declare the source of a component he/she reused from an open-source repository.

Writes their names on a file that was imported from an open-source repository to give the impression that he/she wrote it.