QUIZ 5 - SOFTWARE REUSE

reuse-based software engineering

development process is geared to reusing existing software & tries to maximize reuse of existing software

examples of reuse-based software engineering (SACO)

• system reuse

• application reuse

• component reuse

• object and function reuse

benefits of software reuse

• accelerated development

• effective use of specialists

• increased dependability

• lower development cost

• reduced process ink

• standard compliance

do frameworks offer a generic structure, extended for specific applications, and support design reuse by defining a skeleton architecture with reusable?

yes

MVC stands for _____

WAF stands for _____

• model-view controller

• web application framework

web app frameworks provide classes and components that support: (SSUDD)

• security

• dynamic web pages

• db integration

• session management

• user interaction

3 classes of frameworks (SME)

• system infrastructure frameworks

• middleware integration “ “

• enterprise application “ “

organization of a base system for a product line

base application structure (CCS)

• core components

• configurable components

• specialized application components

core components

provide infrastructure support and are rarely modified

configurable components

can be modified and configured for new apps

specialized application components

domain-specific and may be partially or fully replaced when creating a new product line instance

resource management system architecture diagram

resource management system architecture levels (IIRD)

• interaction level

• i/o management level

• resource management level

• database management level

types of specialization of a software product line (PPEF)

• platform specialization

• environment specialization

• functional specialization

• process specialization

a type of specialization of a software product line where versions of the app may be developed for different platforms

platform specialization

environment specialization

versions of an app created to handle different operating environments and peripheral devices

functional specialization

versions of the application may be created for specific customers

a type of specialization of a softw product line where system may be adapted to cope with specific business processes

process specialization

product instance dev diagram

design-time configuration

an organization that is developing software modifies a common product-line core by developing, selecting, or adapting components

deployment-time configuration

generic system is designed for configuration by customer or consultants working with the customer

application system reuse

• software designed for broad use without altering its original code

• often called COTS (commercial off the-shelf) products, are made for general markets and not tailored to individual customers.

COTS

commercial off the-shelf

application system

may be used as individual systems or in combination, where two or more systems are integrated

configurable application system

general-purpose system that supports specific business types, acts, or enterprises

testing (LP)

• limited test automation

• process-specific errors

integrated application system

include two or more application systems or, sometimes, legacy systems.

what is service-oriented approach

allows access to the application system’s functionality through a standard service interface, with a service for each discrete unit of functionality

benefits of adapting generic version/core system customization

• code reusability

• test efficiency

• development time reduction

• domain expertise

what structure is designed to simplify reuse & reconfiguration?

base application structure