Component based SE

Question 1

What’s the past and present of REUSE?

Answer 1

• Past was ad hoc
• Present is high quality computer-based which is more organized

Question 2

What is Component-Based Software Engineering (CBSE)?

Answer 2

• process that emphasizes the DESIGN and CONSTRUCTION of computer-based systems using REUSABLE software COMPONENTS
• changing the way large software systems are developed
• embodies the BUY, DON’T BUILD philosophy
• shifts the emphasis from PROGRAMMING to COMPOSING software systems

Question 3

What’s the foundation of CBSE?

Answer 3

• there is sufficient commonality in many large software systems so we develop REUSABLE COMPONENTS to exploit and satisfy that commonality

Question 4

What are the examples of re-usable software components?

Answer 4

1. UI Components
2. Software Libraries and SDKs
3. APIs and Web Services
4. Database Components
5. Middleware Components
6. Business Logic Components

Question 5

Process of CSBE?

Answer 5

• establishing requirements
• architectural design
• composition rather than construction
• if not implementable then engineer/modify if can’t modify then new models?

Question 6

What are the criteria for CSBE?

Answer 6

• commercial off-the-shelf (COTS), components available to implement the requirement?
• internally-developed reusable components available to implement the requirement?
• interfaces for available components compatible within the architecture of the system to be built?

Question 7

Component Engineering activities

Answer 7

• component QUALIFICATION
• component ADAPTATION
• component COMPOSITION
• component UPDATE