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- Physical_Data_Flow abstract "Data flow diagrams (DFDs) are categorized as either logical or physical. A logical DFD captures the data flows that are necessary for a system to operate. It describes the processes that are undertaken, the data required and produced by each process, and the stores needed to hold the data. On the other hand, a physical DFD shows how the system is actually implemented, either at the moment (Current Physical DFD), or how the designer intends it to be in the future (Required Physical DFD). Thus, a Physical DFD may be used to describe the set of data items that appear on each piece of paper that move around an office, and the fact that a particular set of pieces of paper are stored together in a filing cabinet. It is quite possible that a Physical DFD will include references to data that are duplicated, or redundant, and that the data stores, if implemented as a set of database tables, would constitute an un-normalised (or de-normalised) relational database. In contrast, a Logical DFD attempts to capture the data flow aspects of a system in a form that has neither redundancy nor duplication.".
- Physical_Data_Flow wikiPageID "37749819".
- Physical_Data_Flow wikiPageLength "1292".
- Physical_Data_Flow wikiPageOutDegree "3".
- Physical_Data_Flow wikiPageRevisionID "628052092".
- Physical_Data_Flow wikiPageWikiLink Category:Software_engineering.
- Physical_Data_Flow wikiPageWikiLink Data_flow_diagram.
- Physical_Data_Flow wikiPageWikiLink Table_(database).
- Physical_Data_Flow wikiPageWikiLinkText "Physical Data Flow".
- Physical_Data_Flow wikiPageUsesTemplate Template:Merge_to.
- Physical_Data_Flow subject Category:Software_engineering.
- Physical_Data_Flow type Area.
- Physical_Data_Flow type Area.
- Physical_Data_Flow type Discipline.
- Physical_Data_Flow comment "Data flow diagrams (DFDs) are categorized as either logical or physical. A logical DFD captures the data flows that are necessary for a system to operate. It describes the processes that are undertaken, the data required and produced by each process, and the stores needed to hold the data. On the other hand, a physical DFD shows how the system is actually implemented, either at the moment (Current Physical DFD), or how the designer intends it to be in the future (Required Physical DFD).".
- Physical_Data_Flow label "Physical Data Flow".
- Physical_Data_Flow sameAs Q7189549.
- Physical_Data_Flow sameAs m.0ngtcx9.
- Physical_Data_Flow sameAs Q7189549.
- Physical_Data_Flow wasDerivedFrom Physical_Data_Flow?oldid=628052092.
- Physical_Data_Flow isPrimaryTopicOf Physical_Data_Flow.