5.4 System design.

The developer shall participate in system design in accordance with the following requirements.

Note: If a system is developed in multiple builds, its design may not be fully defined until the final build. The developer's planning should identify the portion of the system design to be defined in each build. System design for a given build should be interpreted to mean defining the portion of the system design identified for that build.

5.4.1 System-wide design decisions.

The developer shall participate in defining and recording system-wide design decisions (that is, decisions about the system's behavioral design and other decisions affecting the selection and design of system components). The result shall include all applicable items in the system-wide design section of the System/Subsystem Design Description (SSDD) DID (see 6.2). Depending on CDRL provisions, design pertaining to interfaces may be included in the SSDD or in interface design descriptions (IDDs) and design pertaining to databases may be included in the SSDD or in database design descriptions (DBDDs).

Note: Design decisions remain at the discretion of the developer unless formally converted to requirements through contractual processes. The developer is responsible for fulfilling all requirements and demonstrating this fulfillment through qualification testing (see 5.9, 5.11). Design decisions act as developer-internal "requirements," to be implemented, imposed on subcontractors, if applicable, and confirmed by developer-internal testing, but their fulfillment need not be demonstrated to the acquirer.

5.4.2 System architectural design.

The developer shall participate in defining and recording the architectural design of the system (identifying the components of the system, their interfaces, and a concept of execution among them) and the traceability between the system components and system requirements. The result shall include all applicable items in the architectural design and traceability sections of the System/Subsystem Design Description (SSDD) DID (see 6.2). Depending on CDRL provisions, design pertaining to interfaces may be included in the SSDD or in interface design descriptions (IDDs).


Translator: Simon Wright simon@pogner.demon.co.uk
Last updated: 22.iii.99