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1-1-4 System Integration Process
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p. 240 · PDF 244
1-1-4 System Integration Process
The system integration process integrates system elements (including hardware configuration items, software configuration items, manual operations, and other systems, as necessary) in order to produce a complete system that satisfies the system design and the stakeholders’ expectations described in the system requirements.
[Activities of system integration process] (i) System integration (ii) Evaluation and review of test readiness and system integration
(1) System integration
Three tasks are executed in system integration.
(i) Development of a system integration plan
Hardware configuration items, software configuration items, manual operations, and any other required systems are integrated, and an integration plan for turning these into system items is developed. In the integration plan, test requirements, procedures, data, responsibilities, plans, and others are to be documented. (ii) Implementation of system integration test Software configuration items are integrated, with hardware configuration items, manual operations, and other systems as necessary, into the system. System integration is tested against requirements according to the sequence of development, and the integration and the test results are documented in a system integration test report. – Following the system integration test specification document defined in system architectural design, a test environment and test data are prepared and implemented according to the test plan. (iii) Updating user documentation User documentation is updated as required, including corrections to operation manuals.
Note: System integration test refers to testing that combines deliverables developed separately, in order to validate proper operation (i.e., that interfaces are correct). Integration testing is described in “1-2-5 Software Integration Process.”
p. 241 · PDF 245
(2) Evaluation and review of test readiness and system integration
Three tasks are executed in evaluation and review of test readiness and system integration.
(i) Preparation of system qualification test
A set of tests, test cases (e.g., inputs, outputs, test criteria), and test procedures are developed and documented for conducting system qualification test. (ii) Evaluation of system integration
The results of system integration are evaluated, with consideration given to the criteria of test coverage of system requirements, appropriateness of test methods and standards used, conformance to expected results, feasibility of system qualification test, and feasibility of operation and maintenance. The system is modified and documentation is updated, as required. (iii) Implementation of joint review of system integration A joint review by the development department (i.e., supplier) and stakeholders (i.e., acquirer) is conducted, and agreement is obtained concerning system integration.
Note: Concepts concerning evaluation of testing results are described in “1-2-4 Software Construction Process.” Here, it is sufficient to understand the review as confirmation that all testing results are according to expectations for system requirements.
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