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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. Database model - Wikipedia

   en.wikipedia.org/wiki/Database_model

   Hierarchical database model; This is the oldest form of database model. It was developed by IBM for IMS (information Management System), and is a set of organized data in tree structure. DB record is a tree consisting of many groups called segments. It uses one-to-many relationships, and the data access is also predictable. Network model ...

4. 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.

5. 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 ...

6. 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;

7. Data model - Wikipedia

   en.wikipedia.org/wiki/Data_model

   Overview of a data-modeling context: Data model is based on Data, Data relationship, Data semantic and Data constraint. A data model provides the details of information to be stored, and is of primary use when the final product is the generation of computer software code for an application or the preparation of a functional specification to aid a computer software make-or-buy decision.