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first proposal addressing this topic in a quantitative fashion. Now we describe the
steps of the phase.
??? Analysis.of.data.sources: Meetings with data producers are carried out (with
the help of the documents produced so far), where the set of data sources and the
quality of their data are documented. Also, information on source availability
is collected. Two forms, MAS_DS_P and MAS_DS_L, are used for physical
Figure 1. Data requirements matrix
Origin
(dom-usr)
ID Data
(dictionary)
Description
Business Process
Aggregation
Range
(description)
Ranking
(description)
Timeliness
Accuracy
Consistency
description
completenessdescription
value
SURVEY
value
FORM
Data Quality-Based Requirements Elicitation for Decision Support Systems
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of Idea Group Inc. is prohibited.
and logical data sources, respectively. Each form contains a data source identifier,
values for data source availability, and a source priority defined by the
data producer user. In the case of logical data sources, for each data element
the corresponding expression for obtaining the data must be specified. The
following actions are taken: (a) the data producer user determines the priority
criteria for data source usage, based on experience and technical issues.
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