| タイトル | SDDL- SOFTWARE DESIGN AND DOCUMENTATION LANGUAGE |
| 著者（英） | Kleine, H. |
| 発行日 | 1994-01-01 |
| 言語 | eng |
| 内容記述 | Effective, efficient communication is an essential element of the software development process. The Software Design and Documentation Language (SDDL) provides an effective communication medium to support the design and documentation of complex software applications. SDDL supports communication between all the members of a software design team and provides for the production of informative documentation on the design effort. Even when an entire development task is performed by a single individual, it is important to explicitly express and document communication between the various aspects of the design effort including concept development, program specification, program development, and program maintenance. SDDL ensures that accurate documentation will be available throughout the entire software life cycle. SDDL offers an extremely valuable capability for the design and documentation of complex programming efforts ranging from scientific and engineering applications to data management and business sytems. Throughout the development of a software design, the SDDL generated Software Design Document always represents the definitive word on the current status of the ongoing, dynamic design development process. The document is easily updated and readily accessible in a familiar, informative form to all members of the development team. This makes the Software Design Document an effective instrument for reconciling misunderstandings and disagreements in the development of design specifications, engineering support concepts, and the software design itself. Using the SDDL generated document to analyze the design makes it possible to eliminate many errors that might not be detected until coding and testing is attempted. As a project management aid, the Software Design Document is useful for monitoring progress and for recording task responsibilities. SDDL is a combination of language, processor, and methodology. The SDDL syntax consists of keywords to invoke design structures and a collection of directives which control processor actions. The designer has complete control over the choice of keywords, commanding the capabilities of the processor in a way which is best suited to communicating the intent of the design. The SDDL processor translates the designer's creative thinking into an effective document for communication. The processor performs as many automatic functions as possible, thereby freeing the designer's energy for the creative effort. Document formatting includes graphical highlighting of structure logic, accentuation of structure escapes and module invocations, logic error detection, and special handling of title pages and text segments. The SDDL generated document contains software design summary information including module invocation hierarchy, module cross reference, and cross reference tables of user selected words or phrases appearing in the document. The basic forms of the methodology are module and block structures and the module invocation statement. A design is stated in terms of modules that represent problem abstractions which are complete and independent enough to be treated as separate problem entities. Blocks are lower-level structures used to build the modules. Both kinds of structures may have an initiator part, a terminator part, an escape segment, or a substructure. The SDDL processor is written in PASCAL for batch execution on a DEC VAX series computer under VMS. SDDL was developed in 1981 and last updated in 1984. |
| NASA分類 | COMPUTER PROGRAMMING AND SOFTWARE |
| レポートNO | 94M10673
NPO-16201 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/312506 |
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