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  2. Logical schema - Wikipedia

    en.wikipedia.org/wiki/Logical_schema

    Logical data models should be based on the structures identified in a preceding conceptual data model, since this describes the semantics of the information context, which the logical model should also reflect. Even so, since the logical data model anticipates implementation on a specific computing system, the content of the logical data model ...

  3. Dependency (project management) - Wikipedia

    en.wikipedia.org/wiki/Dependency_(project...

    In a project network, a dependency is a link among a project's terminal elements. [citation needed]The A Guide to the Project Management Body of Knowledge (PMBOK Guide) does not define the term dependency, but refers for this term to a logical relationship, which in turn is defined as dependency between two activities, or between an activity and a milestone.

  4. Data modeling - Wikipedia

    en.wikipedia.org/wiki/Data_modeling

    Implementation of one conceptual data model may require multiple logical data models. The last step in data modeling is transforming the logical data model to a physical data model that organizes the data into tables, and accounts for access, performance and storage details. Data modeling defines not just data elements, but also their ...

  5. Project Management Professional - Wikipedia

    en.wikipedia.org/wiki/Project_Management...

    Project Management Professional (PMP) is an internationally recognized professional designation offered by the Project Management Institute (PMI). [1] As of 31 July 2020, there are 1,036,368 active PMP-certified individuals and 314 chartered chapters across 214 countries and territories worldwide.

  6. Data-flow diagram - Wikipedia

    en.wikipedia.org/wiki/Data-flow_diagram

    Data flow diagram with data storage, data flows, function and interface. A data-flow diagram is a way of representing a flow of data through a process or a system (usually an information system). The DFD also provides information about the outputs and inputs of each entity and the process itself.

  7. Comparison of data modeling tools - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_data...

    NORMA Object-Role modeling Conceptual (ORM), Logical, Physical ORM, Relational(Crow’s foot option), Barker Yes Yes Update database and/or update model No Open ModelSphere: Conceptual, Logical, physical IDEF1X, IE (Crow’s foot), and more Yes Yes Update database and/or update model No Oracle SQL Developer Data Modeler Logical, physical

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