Data Models And Its Type


 
 
Concept Explanation
 

Database Models And Its Type

A database model shows the logical structure of a database, including the relationships and constraints that determine how data can be stored and accessed.

Types of  Database Models:

  • Hierarchical database model
  • Network model
  • Entity-relationship model
  • Relational model
  • 1.Hierarchical Model:

    The hierarchical model organizes data into a tree-like structure, where each record has a single parent or root. Sibling records are sorted in a particular order. That order is used as the physical order for storing the database. This model is good for describing many real-world relationships.

    2.Network Model:

    If a child in a data relationship has more than one parent,the relationship cannot be described as a tree or hierarchical structure.Instead it is described as a network or plex structure.

    Any item in a plex structure can be linked to any other item.In a plex structure, child can have more than one parent.

    .... (More Text Available, Login?)
    Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which type of database, organized the data in the form of tree with nodes ?

    Right Option : B
    View Explanation
    Explanation
    Question : 2

    In E - R diagram, relationship type is represented by ________________

    Right Option : D
    View Explanation
    Explanation
    Question : 3

    Relationship can be divided into ______________________

    Right Option : D
    View Explanation
    Explanation
     
     


    Students / Parents Reviews [20]