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  1. Mar 12, 2024 · Learn about different types of data models in database management system (DBMS), such as conceptual, representational, and physical models. Compare and contrast the features, advantages, and disadvantages of each model with examples and diagrams.

  2. Learn about the four data models used for designing databases: relational, entity-relationship, object-based, and semistructured. See the features, advantages, and applications of each model with examples and diagrams.

    • Hierarchical Model. The hierarchical database model organizes data into a tree-like structure, with a single root, to which all the other data is linked.
    • Network Model. The Network Model is an extension of the Hierarchical model. In this model, data is organized more like a graph, and allowed to have more than one parent node.
    • Entity-relationship Model. In this database model, relationships are created by dividing objects of interest into entities and their characteristics into attributes.
    • Relational Model. In this model, data is organized in two-dimensional tables and the relationship is maintained by storing a common field. This model was introduced by E.F Codd in 1970, and since then it has been the most widely used database model.
    • Hierarchical Model. The hierarchical data model is one of the oldest data models, developed in the 1950s by IBM. In this data model, the data is organized in a hierarchical tree-like structure.
    • Network Model. A network model is nothing but a generalization of the hierarchical data model as this data model allows many to many relationships therefore in this model a record can also have more than one parent.
    • Entity-Relationship Model (ER Model) An Entity-Relationship model is a high-level data model that describes the structure of the database in a pictorial form which is known as ER-diagram.
    • Relational Model. This is the most widely accepted data model. In this model, the database is represented as a collection of relations in the form of rows and columns of a two-dimensional table.
  3. www.scholarhat.com › tutorial › dbmsData Models in DBMS

    2 days ago · It offers the conceptual tools needed to explain a database's design at every level of data abstraction. there are three main types of Data Models. 1. Conceptual data model. The conceptual data model helps understand the needs and requirements of the database since it provides a high-level description of the database.

  4. Learn about the different types of data models in DBMS, such as hierarchical, network, entity-relationship, relational, object-oriented, and more. Each data model has its own advantages, disadvantages, and applications in database management systems.

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  6. Learn how to describe and organize data in a database using different data models, such as relational, flat, entity-relationship, network, and more. See diagrams and examples for each data model and compare their advantages and disadvantages.

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