Describe System Design Document (SDD).

Provide identifying information for the existing and/or proposed automated system or situation for which the SDD applies (e.g., the full names and acronyms for the development project, the existing system or situation, and the proposed system or situation, as applicable), and expected evolution of the document. Also describe any security or privacy considerations associated with use of this document.The System Design Document (SDD) describes how (1) the functional and nonfunctional requirements recorded in the Requirements Document, (2) the preliminary user-oriented functional design recorded in the High Level Technical Design Concept/Alternatives document, and (3) the preliminary data design documented in the Logical Data Model (LDM) are transformed into more technical system design specifications from which the system will be built. The SDD is used to document both high-level system design and low-level detailed design specifications.The SDD describes design goals and considerations, provides a high-level overview of the system architecture, and describes the data design associated with the system, as well as the human-machine interface and operational scenarios. The high-level system design is further decomposed into low-level detailed design specifications for each of the system’s components, including hardware, internal communications, software, system integrity controls, and external interfaces. The high-level system design serves as primary input to the Preliminary Design Review (PDR). The low-level detailed design serves as input to the Detailed Design Review (DDR).1.1Purpose of the System Design DocumentInstructions: Provide the purpose of the System Design Document. This document should be tailored to fit a particular project’s needs.a)Interface/protocol requirementsb)Licensing requirementsc)Data repository and distribution requirementsd)Security requirements (or other such regulations)e)Memory or other capacity limitationsf)Performance requirementsg)Network communicationsh)Verification and validation requirements (testing)i)Other means of addressing quality goalsj)






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