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2. Hierarchical database model - Wikipedia

   en.wikipedia.org/wiki/Hierarchical_database_model

   A hierarchical database model is a data model in which the data is organized into a tree-like structure. The data are stored as records which is a collection of one or more fields . Each field contains a single value, and the collection of fields in a record defines its type .

3. Warnier/Orr diagram - Wikipedia

   en.wikipedia.org/wiki/Warnier/Orr_diagram

   A Warnier/Orr diagram (also known as a logical construction of a program/system) is a kind of hierarchical flowchart that allows the description of the organization of data and procedures. They were initially developed 1976, [ 1 ] in France by Jean-Dominique Warnier [ 2 ] and in the United States by Kenneth Orr [ 3 ] on the foundation of ...

4. C4 model - Wikipedia

   en.wikipedia.org/wiki/C4_model

   The viewpoints are organized according to their hierarchical level: [2] [3] Context diagrams (level 1): show the system in scope and its relationship with users and other systems; Container diagrams (level 2): decompose a system into interrelated containers. A container represents an application or a data store;

5. Structured analysis and design technique - Wikipedia

   en.wikipedia.org/wiki/Structured_Analysis_and...

   Structured analysis and design technique (SADT) is a systems engineering and software engineering methodology for describing systems as a hierarchy of functions. SADT is a structured analysis modelling language, which uses two types of diagrams: activity models and data models.

6. Dia (software) - Wikipedia

   en.wikipedia.org/wiki/Dia_(software)

   Dia has special objects to help draw entity-relationship models, Unified Modeling Language (UML) diagrams, flowcharts, network diagrams, and simple electrical circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of Scalable Vector Graphics (SVG) to draw the shape.

7. Data structure diagram - Wikipedia

   en.wikipedia.org/wiki/Data_structure_diagram

   A Bachman diagram is a certain type of data structure diagram, [2] and is used to design the data with a network or relational "logical" model, separating the data model from the way the data is stored in the system. The model is named after database pioneer Charles Bachman, and mostly used in computer software design.