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My Experience Codd Rules For Dbms To Qualify As Rdbms.

Discussion in 'Database Management' started by krishatg, Mar 16, 2016.

  1. krishatg

    Yellow Belt

    Joined:
    Jan 16, 2016
    Messages:
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    Ratings:
    +14 / -0
    • Information Rule: states that entire data along with names and column names is represented in the form of table.
    • Access Rule: states that a particular record can be accessed only through the primary key that is used to uniquely identify a row.
    • View Updating Rule: states that any modification made on the views will be reflected back to the original table thus ensuring the consistency.
    • Language Supportablility Rule: states that there should be a certain language that allows the user to define a table, query and update data set integrity constraints and define transections.
    • Feature of insert, update and delete.
    • Logical data independence
    • Physical data independence
    • Integrity Independence
    • Support to NULL
    • Distributed database feature.
    • Database description rule: states that the description of the database is stored and maintained in the form of table.
     
  2. Swati Mishra

    Yellow Belt

    Joined:
    Dec 28, 2015
    Messages:
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    Ratings:
    +105 / -0
    Exactly codd rule says that columns and the rows are defined in the form of table and the insertion deletion and modification in table is possible
     

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