DataModelingFormalisms-Kim-March

DataModelingFormalisms-Kim-March - Comparing Data Modeling...

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Comparing Data Modeling FovmaIisms early binq modcling work 1,) Abrial [I] and Scnko [19]. It is widrly used in Australia and Europe and is considered, along with the ER approach, to be among the major approaches used internationally 17, 10, 251. The study analyzes the effects of these modeling formal- isms on analyst tasks (building data models) and user tasks (validating data models). Information Requirement Determination Process Determining correct, consiarcnt, and complete information require- ments is a difficult and challenging task [6]. Figure 1 (adapted from [l2]) shows a four-phase process model for requirements determination: 1. Perception-Users perceive the enterprise reality. The same enter- ccurate sprciticatwu dnd vahdaon ot mfornrat~~~ requirements is critical to the development of organiza- tional information systems. Semantic data models were developed to provide a precise and unambiguous reprc- sentation of organizational information requirement\ [9, 171. They serve as a communication
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This note was uploaded on 11/17/2011 for the course ITM 311 taught by Professor Harrisonmcknight during the Fall '10 term at Michigan State University.

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DataModelingFormalisms-Kim-March - Comparing Data Modeling...

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