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8.2 Views on Requirements 117 8.2.2 Condensed Views on the Requirements Along with selecting existing information from the requirements basis, views can contain generated or condensed data that is not immediately contained in the requirements. Views that contain only generated or con- densed data are called condensed views. Generating condensed views Condensed views can be defined by aggregating the data contained in the requirements basis. A condensed view can, for example, contain information on the percentage of requirements that stem from a particular source. Combination of selecting and condensing A single view may also consist of a combination of generated, con- densed, and selected data. Figure 8-3 Condensed view generated from a requirements basis Figure 8-3 shows two condensed views of the requirements. The view “Validation status of the Requirements Basis” ( n ) groups requirements according to the current status of validation and calculates the percentage value of the requirements with regard to the status “unvalidated”, “in vali- dation”, “validated”, “in correction”, and “erroneous”. The result is depicted as a bar chart in the figure above. In view o , “Implementation effort by Release”, the estimated and actual effort involved with the implementation
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118 8 Requirements Management of the requirements of a particular release is depicted. In order to calculate this aggregated data, the requirements are grouped by their respective release and their implementation effort is summed up. The result is depicted as a pie chart in figure 8-3.
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