The document discusses quality attributes that affect system design. It identifies four types of quality attributes: runtime system qualities, non-runtime system qualities, business qualities, and architecture qualities. Runtime system qualities include functionality, performance, security, and usability. Non-runtime qualities include modifiability, portability, reusability, and testability. Business qualities are cost and marketability. Architecture qualities are integrity and correctness. The document emphasizes that as an architect, understanding how design choices impact these quality attributes is important.

1. Quality Attribute Req.
Abdul Rahman
Software Engineering ,Gcuf
Monday, January 27, 2014
GC University Faisalabad
1

2. Quality
 Quality is a measure of excellence or a state of being
free from defects, deficiencies.
Monday, January 27, 2014
GC University Faisalabd
2

3. Quality
Attribute
 The Quality Attributes are the Overall factor that
affect runtime behavior , System Design and nonRuntime Behavior.
Monday, January 27, 2014
GC University Faisalabd
3

4. Quality
Attribute Types
 Runtime System Qualities
 Non-Runtime System Qualities
 Business Qualities
 Architecture Qualities
Monday, January 27, 2014
GC University Faisalabd
4

5. Runtime
System
Qualities
 Functionality
 the ability of the system to do the work for which it was
Developed
 Performance
 the response time, utilization, and behavior of the system.
Monday, January 27, 2014
GC University Faisalabd
5

6. Runtime
System
Qualities
 Security
 security is the protection of information assets through the user.
 Log in
 Usability
 the ease of use and of training the end users of the system.
 User Friendly
Monday, January 27, 2014
GC University Faisalabd
6

7. Non-Runtime
System
Qualities
 Modifiability
 The ease of with which a software system can accommodate
changes.
 Design Independent
 Portability
 the ability of a system to run under different computing environments.
Monday, January 27, 2014
GC University Faisalabd
7

8. Non-Runtime
System
Qualities
 Reusability
 the degree to which existing applications can be reused in new
applications.
 Testability
 the ease with which software can be made to demonstrate its faults.
Monday, January 27, 2014
GC University Faisalabd
8

9. Business
Qualities
 Cost
 cost of the system with respect to time to market.
 Total cost in manufacturing, testing , developing the system.
 Marketability
 The use of the system with respect to market competition.
Monday, January 27, 2014
GC University Faisalabd
9

10. Architecture
Qualities
 Integrity
 It tells that separately developed component of the system work
correctly together.
 Correctness
 System should satisfy all the requirements given by the Costumer.
Monday, January 27, 2014
GC University Faisalabd
10

11. Importance
 we balance the different quality attributes of a system so that
they are best aligned to delivering business value for our
organization.
Monday, January 27, 2014
GC University Faisalabd
11

12. Conclusion
 As an architect, you have to understand how the choices
you are making affect the quality attributes of the
resulting system.
 And you have to understand which quality attributes are
important for the system you are delivering.
Monday, January 27, 2014
GC University Faisalabd
12

13. Thank You
Monday, January 27, 2014
GC University Faisalabd
13