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The purposes of this study were to identify the functional requirements of and to build the data model for a PDA-DSS. Through Use Case Analysis and UML modeling, seven Use Cases were documented, and Use Case Diagrams, Activity Diagrams, and Sequence Diagrams related to the management of were developed.pmid:17238621 pmcid:PMC1839530 fatcat:bsfpxerz2ngd5mchwzpw5p3eji