| Expressions | Domain | Definition |
| Engineer of system development | Occupations | Plans and coordinates activities to provide for orderly development and improve operating efficiency of electric power system: Coordinates scheduling, conducting, and analysis of special studies, such as commercial and residential developments in surrounding territory, population estimates, and advantages of and facilities for interconnections with other power systems. Coordinates collection and analysis of operational data, such as system-load demands and generating capacity. Evaluates analyzes and recommends additional facilities to meet requirements of new, increased, or future loads, or to improve system. (references) |
| Operational System Development | Military | Budget Activity (BA) 7 within a Research, Development, Test and Evaluation (RDT&E) appropriation account that includes development efforts to upgrade systems that have been fielded or have received approval for Full Rate Production (FRP) and anticipate funding in Current Year (CY) or subsequent Fiscal Year (FY). A logical progression of program phases and development and production funding must be evident in the Future Years Defense Program (FYDP) consistent with DoD’s full funding policy. (DoD 7000.14-R). See Research, Development, Test and Evaluation Budget Activities. (references) |
| System development | Computing | A set of interrelated activities by which transitions from system requirements into design specifications are performed, functional units are constructed, tested, integrated, documented, and placed in operational status. Source: European Union. (references) |
| System Development and Demonstration (SDD) | Military | 1. The third phase of the life cycle as defined and established by DoDI 5000.2. This phase consists of two efforts, System Integration (SI) and System Demonstration (SD), and begins after Milestone B. It also contains a Design Readiness Review (DRR) at the conclusion of the SI effort. A successful Milestone B can place the program in either SI or SD. A program planning to proceed into SD at the conclusion of SI will first undergo a DRR to confirm that the program is progressing satisfactorily during the phase. 2. Budget Activity (BA) 5 within a Research, Development, Test and Evaluation (RDT&E) appropriation account. Involves mature system development, integration and demonstration to support Milestone C decisions and the conduct of Live Fire Test and Evaluation (LFT&E) and Initial Operational Test and Evaluation (IOT&E) of production representative articles. A logical progression of program phases and development and production funding must be evident in the Future Years Defense Program (FYDP) consistent with DoD’s full funding policy. (DoD 7000.14-R). See Research, Development, Test and Evaluation Budget Activities. (references) |
| System development life cycle (SDLC) | Health | Methodology The policies and procedures that govern software development and modification as a software product goes through each phase of its life cycle. (FISCAM). (references) |
Source: compiled by the editor from various references; see credits. | Top |