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Requirement Engineering

[IREB CPRE] Chapter 5. Process and Working Structure

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๐ŸŸก 5.

 

 

๐ŸŸก 5.1 Influencing Factors

 

* RE Process์— ์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์ค‘์š”ํ•œ ์š”์ธ๋“ค * 

 

1) overall process fit : ์ „์ฒด์ ์ธ ํ”„๋กœ์„ธ์Šค๋ฅผ ์ดํ•ดํ•˜๋Š” ๊ฒƒ์ด ์ค‘์š”ํ•จ. Work product๊ฐ€ ํ•„์š”ํ•˜๊ธฐ๋„ ํ•จ. Terminology๋„. ์ด๊ฒƒ๋“ค์„ ํ†ตํ•ด ์˜คํ•ด๋‚˜ ํ˜ผ๋ž€์„ ๋ง‰์„ ์ˆ˜ ์žˆ์Œ.  

 

2) Development context : ์ด๋ฅผ ๋ถ„์„ํ•˜๊ธฐ ์œ„ํ•ด์„œ๋Š” ์•„๋ž˜์˜ ์‚ฌํ•ญ์— ๋Œ€ํ•œ ์ •์˜๊ฐ€ ๋˜์–ด์•ผ ํ•จ.

* Customer-supplier-user relation ship

* Development type

* Contract issues : deadlines, responsibilities, costs...

* Trust : do they trust each other?

 

3) Stakehloder availability and capability : ๊ฐ์ž์˜ ๋Šฅ๋ ฅ์— ๋งž๊ฒŒ 

 

4) Shared understanding : ์ตœ์„ ์˜ shared understanding์€ ๊ฐ€๋ฒผ์šด RE process๊ฐ€ ๊ฐ€๋Šฅํ•˜๊ฒŒ ํ•ด์คŒ.

 

5) Complexity and criticality : ๋ณต์žก์„ฑ๊ณผ ์ค‘์š”์„ฑ์— ๋”ฐ๋ผ ์š”๊ตฌ์‚ฌํ•ญ์ด ์–ผ๋งŒํผ ์ž์„ธํžˆ ๋ช…์„ธ๋˜์–ด์•ผ ํ• ์ง€ ๊ฒฐ์ •๋จ.

 

6) Contraints

 

7) Time and budget available

 

8) Volatility of requirements : ์š”๊ตฌ์‚ฌํ•ญ์˜ ๋ณ€๋™์„ฑ

 

9) Experience of Requirements Engineers

 

 

 

๐ŸŸก 5.2 Requirements Engineering Process Facets

 

 

 

โœ… 5.2.1 Time Facet : Linear VS Iterative

 

- Linear RE Process : single phase.

- Iterative : Agile, adding or modifying requirements in every iteration

 

Linear Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

Iterative Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

 

 

โœ… 5.2.2 Purpose Facet : Prescriptive VS Explorative

 

- Prescriptive : ๊ทœ๋ฒ”์ ์ธ. Contract, deadline

- Exploartive : need to be explored

 

Prescriptive Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

Explorative Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

 

 

โœ… 5.2.3 Target Facet : Customer-Specific VS Market-Oriented

 

Customer-Specific Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

Market-Oriented Process๋ฅผ ์„ ํƒํ•˜๋Š” ๊ธฐ์ค€

 

 

 

โœ… 5.2.4 Hints and Caveats

 

- prerequisites and consequences

- Mutual influence : ์œ„์— ์–ธ๊ธ‰ํ•œ facet 3๊ฐ€์ง€๋Š” ์™„์ „ํžˆ ๋…๋ฆฝ์ ์ด์ง€๋Š” ์•Š์Œ.

Linear-prescriptive/explorative-iterative/market-lenear and prescriptive

 

+++ Shared understanding and criticality, Time and budget, Experience of RE์—ญ์‹œ ๊ณ ๋ ค๋˜์–ด์•ผ ํ•  ๋Œ€์ƒ์ด๋‹ค.

 

 

 

๐ŸŸก 5.3 Configuring a Requirements Engineering Process

 

 

 

1) Participatory RE Process : Iterative & Explorative & Customer-Specific

-> Main application case :  Supplier์™€ customer๊ฐ€ ๊ฐ€๊นŒ์ด์„œ collaborateํ•จ. Stakeholder๋„ ๊ฐœ๋ฐœ ๊ณผ์ •์— ์™„์ „ํžˆ ํฌํ•จ๋ผ์žˆ์Œ.

-> Typical work products : Product backlog with user stories, vision, prototypes

-> Typical information flow : stakeholder์™€ product owner, RE, ๊ฐœ๋ฐœ์ž ์‚ฌ์ด์˜ ์ง€์†์ ์ธ ์ƒํ˜ธ์ž‘์šฉ

 

2) Contractual RE Process : Typically Linear & Prescriptive & Customer-Specific

-> Main application case :  contractual basis for the development of a system, ์‚ฌ๋žŒ๋“ค ๋ณ„๋กœ involve ์•ˆ๋ผ์žˆ๊ณ  ์ดํ•ด๊ด€๊ณ„์ž๋“ค์ด๋ž‘ re phase ์ดํ›„์— ์ƒํ˜ธ์ž‘์šฉ

-> Typical work products  : Classic system requriements specification, textual re and models

-> Typical information flow : ์ฃผ๋กœ stakeholder ---> RE๋กœ ์ •๋ณด๊ฐ€ ๊ฐ.

 

3) Product-Oriented RE Process : Iterative & Exploartive & Market-Oriented

-> Main application case : ์กฐ์ง์ด ์†Œํ”„ํŠธ์›จ์–ด๋ฅผ ๋ช…์‹œํ•˜๊ฑฐ๋‚˜ ๊ฐœ๋ฐœํ•  ๋•Œ

-> Typical work products : Product backlog with user stories, vision, prototypes

-> Typical information flow : product owner, marketing, RE, Engineer, Digital deigner, Developer ๊ฐ„์˜ ์ƒํ˜ธ์ž‘์šฉ. 

 

 

 

 

โœ… 5.3.3 How to Configure RE Process

 

1) Analyze the influencing factors : 5.1์˜ ์š”์ธ์„ ๊ด€๋ จํ•˜์—ฌ ๋ถ„์„ํ•˜๊ธฐ

2) Assess the facet criteria : 5.2์˜ ์ธก๋ฉด์„ ์ž˜ ํŒ๋‹จํ•˜๊ณ  ์ฒ™๋„๊ฐ€ ์–ด๋Š์ •๋„์ธ์ง€ ํ• ๋‹นํ•ด๋ณด๊ธฐ

3) Configure : 1,2๋ฅผ ๊ทผ๊ฑฐ๋กœ ํ”„๋กœ์„ธ์Šค ๊ตฌ์„ฑ

4) Determine work products : ์ž‘์—… ์‚ฐ์ถœ๋ฌผ ๊ฒฐ์ •. ์ด ์ „์ฒด ๊ฐœ๋ฐœ ํ”„๋กœ์„ธ์Šค์™€ ์‚ฐ์ถœ๋ฌผ์ด ์ผ์น˜ํ•˜๋Š”์ง€ ํ™•์ธ

5) Select appropriate practices : ์ ์ ˆํ•œ ์‚ฌ๋ก€๋ฅผ ์„ ํƒ. ์ฃผ์–ด์ง„ ์ƒํ™ฉ์— ๊ฐ€์žฅ ์ ํ•ฉํ•œ ๋ฐฉ๋ฒ•์ด ๋ฌด์—‡์ธ์ง€ ํŒŒ์•… ํ›„ ๊ทธ๋Œ€๋กœ ํ•˜๊ธฐ

 

 

 

 

 

 

Reference

๋”๋ณด๊ธฐ

Handbook for the CPRE Foundation Level according to the IREB Standard

Version 1.1.0

September 2022

 

์œ„ ์ฑ… ๋‚ด์šฉ์„ ์ฑ•ํ„ฐ๋ณ„ ์ค‘์š”ํ•œ ํฌ์ธํŠธ ์œ„์ฃผ๋กœ screenshot์„ ํ†ตํ•ด ์ •๋ฆฌํ•œ ์ž๋ฃŒ์ž…๋‹ˆ๋‹ค.

์Šค์Šค๋กœ ๊ณต๋ถ€ํ•˜๊ธฐ ์œ„ํ•œ ์š”์ ์ •๋ฆฌ ๋…ธํŠธ์ด๋ฏ€๋กœ ์ƒ์—…์ ์ธ ์‚ฌ์šฉ ๋ชฉ์ ์€ ์ „ํ˜€ ์—†์Œ์„ ์•Œ๋ ค๋“œ๋ฆฝ๋‹ˆ๋‹ค:)

 

์ด ์‹œํ—˜์— ๋Œ€ํ•œ ์ •๋ณด ๋ฐ ๊ฐ์ข… ์ž๋ฃŒ๋Š” ์•„๋ž˜ ์‚ฌ์ดํŠธ์—์„œ ํ™•์ธํ•˜์‹ค ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. โฌ‡โฌ‡โฌ‡

http://www.kstqb.org/sw/lreb.asp

 

 

 

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