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Requirement Engineering

[IREB CPRE] Chapter 2. Fundamental Principles of Requirement Engineering

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๐ŸŸก 2.1 Overview of Principles

RE์˜ 9๊ฐ€์ง€ ๊ธฐ๋ณธ ๊ฐœ๋…

 

 

 

๐ŸŸก 2.2 The Principles Explained

โœ… 2.2.1 Principle 1 - Value orientation : Requirements are a means to an end, not an end in itself

 

1) Benefit minus cost

2) Benefit from reduced rework

RE์˜ ๊ฐ€์น˜

 

์˜ํ–ฅ์„ ๋ฏธ์น˜๋Š” ์š”์†Œ

 

 

 

โœ… 2.2.2 Principle 2 - Stakeholders : RE is about satisfying the stakeholders' desires and needs

 

-> Stakeholder์„ ๋ถ„๋ฅ˜ํ•˜๋Š” ๊ธฐ์ค€

 

 

 

โœ… 2.2.3 Principle 3 - Shared understanding : Successful systems development is impossible without a common basis

2๊ฐ€์ง€ ์œ ํ˜•์˜ shared understanding

 

๋‘ ๋ฐฉ์‹ ๋ชจ๋‘ ์™„์ „ํžˆ ์‹ ๋ขฐํ•ด์„œ๋Š” ์•ˆ๋˜์ง€๋งŒ, shared understanding์„ ์ƒ์„ฑ ๋ฐ ์ด‰์ง„ํ•˜๊ณ  ์ด๋ฅผ ํ™•๋ณดํ•˜๋Š” ๊ฒƒ์— ์ดˆ์ ์„ ๋งž์ถ”์–ด์•ผ ํ•จ.

 

Enablers์˜ ์˜ˆ์‹œ

 

Obstacles์˜ ์˜ˆ์‹œ

 

 

-> ์ž˜๋ชป๋œ shared understanding์˜ ๊ฐ€๋Šฅ์„ฑ๊ณผ ์˜ํ–ฅ๋ ฅ์ด ๋‚ฎ๊ณ  enablers๋Š” ๋งŽ์€๋ฐ obstacle์€ ์ ๋‹ค๋ฉด, ์š”๊ตฌ๊ณตํ•™์€ implicit shared understanding์„ ์‹ ๋ขฐํ•ด๋„ ๊ดœ์ฐฎ๋‹ค(explicit์€ ๋””ํดํŠธ).

-> ๋ฐ˜๋Œ€๋กœ, enablers์™€ obstacles ์‚ฌ์ด์˜ ๋น„์œจ์ด ๋‚ฎ๊ณ  ํฐ ๋ฆฌ์Šคํฌ์™€ ์˜ํ–ฅ๋ ฅ์ด ์žˆ๋‹ค๋ฉด, ์š”๊ตฌ์‚ฌํ•ญ์€ ๋ช…ํ™•ํ•˜๊ฒŒ ๋ช…์„ธํ™” ๋˜์–ด์•ผ ํ•˜๊ณ , ์ž…์ฆ๋˜์–ด์•ผ ํ•œ๋‹ค. (๊ทธ๋ƒฅ implicit์œผ๋กœ ๊ฐ”๋‹ค๊ฐ€ ๋งํ•  ์ˆ˜๋„ ์žˆ๋‹ค๋Š” ๋œป)

 

 

 

โœ… 2.2.4 Principle 4 - Context : Systems cannot be understood in isolation

 

System boundary  : ์‹œ์Šคํ…œ๊ณผ ํ™˜๊ฒฝ์„ ๋ถ„๋ฆฌํ•˜๋Š” ๊ฒฝ๊ณ„.

Ex) ์ œ์กฐ ๊ณผ์ •์—์„œ ์ˆ˜์ •ํ•  ์ˆ˜ ์žˆ๋Š” ํ˜„์‹ค์˜ ์ผ๋ถ€์™€ ์ด ๊ณผ์ •์—์„œ ๋ณ€๊ฒฝํ•  ์ˆ˜ ์—†๋Š” ํ™˜๊ฒฝ์  ์ธก๋ฉด์„ ๋ถ„๋ฆฌํ•˜๋Š” ๊ฒƒ.

Context boundary : ์‹œ์Šคํ…œ ํ™˜๊ฒฝ์˜ ์ค‘์š”ํ•œ ๋ถ€๋ถ„๊ณผ ํ•„์ˆ˜์ ์ด์ง€ ์•Š์€ ๋ถ€๋ถ„

(ex. ์ž‘์„ฑ ์ค‘์ธ ์‹œ์Šคํ…œ์— ์˜ํ–ฅ์„ ๋ฏธ์น˜์ง€ ์•Š๋Š” ๋ถ€๋ถ„)๊ณผ ๊ตฌ๋ถ„ํ•จ. RE์— ์˜ํ–ฅ์„ ๋ฏธ์น˜์ง€ ์•Š์Œ.

 

* Context == System + Environment *

 

 

 

 

โœ… 2.2.5 Principle 5 - Problem, requirement, solution : An inevitably intertwined(์–ฝํžˆ๊ณ  ์„คํ‚จ) triple

Forms of intertwinement

 

Consequences of intertwinement

 

 

 

โœ… 2.2.6 Principle 6 - Validation : Non-validated requirements are useless

 

 

-> ๊ฒ€์ฆํ•  ๋•Œ ์ฒดํฌํ•ด์•ผ ํ•˜๋Š” ์š”์†Œ๋“ค

 

 

 

โœ… 2.2.7 Principle 7 - Evolution : Changing requirements are no accident, but the normal case

์š”๊ตฌ์‚ฌํ•ญ์ด ๋ณ€๊ฒฝ๋˜๋Š” ์ด์œ 

 

๊ฒ‰๋ณด๊ธฐ์—๋Š” ๋ชจ์ˆœ๋˜์ง€๋งŒ ์š”๊ตฌ๊ณตํ•™์ž๋“ค์ด ์ง€์ผœ์•ผ ํ•  ๊ฒƒ๋“ค - 6์žฅ์— ๋” ์ž์„ธํžˆ ๋‚˜์˜ด

 

 

 

โœ… 2.2.8 Principle 8 - Innovation : More of the same is not enough

Innovation์˜ ์˜ˆ์‹œ

 

 

โœ… 2.2.9 Principle 9 - Systematic and disciplined work : We can't do without in RE

์š”๊ตฌ๊ณตํ•™์ž๋“ค์ด ์ง€์ผœ์•ผ ํ•  ๊ฒƒ๋“ค

 

 

 

 

 

 

 

 

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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