4 Development Processes and Component Development

Question 1

Wartbarkeit

Answer 1

Leichtigkeit mit der sich

• Korrektur von Fehlern
• Verbesserungen der externen Software-QUalität
• Anpassungen an Änderungen der Umgebung, der ANforderungen oder der funktionalen Spezifikation

Def nach ISO/IEC: The degree of effectiveness and efficiency with which the product can be modified

Question 2

Wartbarkeit nach ISO/IEC

Answer 2

Analysierbarkeit
Modularität
Wiederverwendbarkeit
Modifizierbarkeit
Testbarkeit

Question 3

Types of Comp Based Develop.

Answer 3

COTS-based dev

• cots = commercial-off-the-shelf or comp-off-the-shelf
• comps developed by some orgs to be marketed
• other orgs use comps available on marketplaces
• no direct influence on comp providers

Product-line dev
-single org develops comps for internal reuse in severl products

Architecture-driven comp dev

• comps developed as result of topdown sys design
• not primarily intended for reuse
• comp-based design here
• -enforces well modularized system, allows benefits from standard services of comp tech

Question 4

Bottom-up /top-down

Answer 4

BU:

• comps are developed independently of each other and independently of application
• applics are created by assembling comps

TD:

• framework and software apps with explicit plugin extension mechanisms are developed
• plugins are developed to fill these applications, eg browser, photoshop, eclipse

Question 5

Produktlinien

Answer 5

EIne Menge von Programmvarianeten (Sftwr-Produkten)
teilen eine gemeinsame Menge v. Merkmalen (Features)
die auf eine gemeinsames Marktsegment (Domain) zgeschnitten sind
mit dem Ziel der Wiederverwendung von gemeinsamen Software-Artefakten
zB Datenbank Prduktlinie für embedded systems

Question 6

Product Line Frameworks

Answer 6

Software reference architecture
-a software architecture that defines entities concrete architectures have to reference to

Software product line

• a set of software products that share considerable parts
• a product line approach allows the planned, architecture-centric and intra-organisational reuse of software artefacts

A framework is the half finished software implementation for a defines application area

• it can be specialised to executable software by filling variation points with code
• -Component framework: comps needed for specialisatn
• -Object framework: subclasses are needed for spclstn

Application with plugins
-an executable aypplication that can be specialised by plugins during deployment or run-time
but also runnable without plugin

Question 7

Variability

Answer 7

A product line caputres variability through variation points

-variation points delay design decisions

Question 8

Features

Answer 8

Visible property or behaviour of the system
can be optional to the system

features represent commonality and differences btw. systems

Question 9

Features vs Varianten

Answer 9

Features sind grundbausteine einer Produktlinie (zb implementiert durch comps, packages etc)

feature-kombinationen bilden individuelle produkte