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Posted byOlivia
Conceptual vs Logical Model Data modeling is one task that confuses many modelers because of the use of different designs of modeling. Three styles of data modeling that are very popular are conceptual, physical and logical models but because of many overlapping principles, people who wish to make use of any of these models remain […]
Posted byOlivia
ERD vs DFD ERD and DFD are data presentation models that help in identifying the flow of data as well as inputs and outputs. They are important as they enable effective communication between members of different departments in an organization. There are similarities in the two types of data presentation models although there are differences […]