PD CEN/TR 17603-40:2022 - Page 2

1. 1. Requirement engineering and the relationship between system and software
2. 2. Implementation of the requirements of ECSS‑E‑ST‑40 when different life-cycle paradigms are applied (e.g., waterfall, incremental, evolutionary, agile) and at different levels of the Customer-Supplier Network
3. 3. Architecture, design and implementation, including real-time aspects
4. 4. Unit and integration testing considerations, testing coverage
5. 5. Validation and acceptance, including software validation facility and ISVV implementation
6. 6. Verification techniques, requirements and plan
7. 7. Software operation and maintenance considerations.

NOTE In order to improve the readability of the Handbook, the following logic has been selected for sections 5, 6, and 7:

• • section 5 follows the table of content of ECSS‑E‑ST‑40C at least up to level 3 and generally up to level 4. For each sub clause of ECSS‑E‑ST‑40C:
  • + either information is given fully in section 5,
  • + or there is a pointer into section 6 or section 7
  • + or the paragraph has been left intentionally empty for consistency with the ECSS‑E‑ST‑40C table of content, in this case, only “ -“ is mentioned.
• • section 6 expands selected parts of section 5 when:
  • + either the volume of information was considered too large to stay in section 5,
  • + or the topic is addressed in several places of section 5
  In any case, there is a pointer from section 5 to section 6, and section 6 mentions the various places in ECSS‑E‑ST‑40C where the topic is addressed.
• • section 7 follows the same principles as section 6, but gathers the topics related to margins and to real-time.