220.127.116.11b SW Design: Database (SwDes)
After determining the architecture of the SW Unit, this product describes the detailed design of a Database.
Results of an analysis about resource and time requirements analysis will also be documented.
It will be completely described down to the level of a schema definition.
Such a product exists for each Database (of each SW Unit of each Segment in the System).
It is possible to combine several SW Designs into one product "SW Design".
2. Database Description
2.1. DBMS Name
2.2. Schema Definition
3. Characteristic Quantities
See schema 1. General Information.
In the case of a detailed design for a Database, this chapter must be used instead of SW Component/SW Module description.
The database management system used will be mentioned here.
The detailed design has to be done down to the data elements level. This means
The realization of the data (data type and format, location) has to be included in the product Data-Dictionary.
This chapter deals with, among other things:
- for file systems:
definition of the record structures and the data elements contained therein,
- for hierarchical databases:
definition of the Segments, the data elements included, and the hierarchy of the Segments,
- for relational databases:
definition of the tables or views, the data elements included, the external keys, and integrity conditions.
- resource and time requirements,
- priorities and operation sequence,
- precision of processing,
- maximum, minimum and probable frequency of signals.
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Last Updated 01.Jan.2002
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Last Revised 01.Jan.2002
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