What is data model? And types.

It will Help You to get information about DBMS Subject. and i hope you will understand easily what is Data and the types of data models.
Thanks..

1. Submitted By: DeepKaur H ierarchical Data Model v/s Network Data Model 1 DBMS

2. Why they Are Important? What is Data Model? 2 DBMS

3. Hierarchical Data Model Network Data Model E-R Data Model Types Of Data Models 3 DBMS

4. Hierarchical Model v/S Network Model Having Relationship like 1:1 and 1:M But M:M relation Can’t Be expressed. Simple Useful for Hierarchical character in the DBMS. M:M Can Be expressed. Complex due to the use of Pointers. Useful For Representing M:M Relationships. 4 DBMS

5. Operations are : Insertion Updation Deletion Retrieve D ifference On The basis Of Operations 5 DBMS

6. HDM Child Can’t Be Inserted Without Parent. NDM Free From Insert Anomaly. HDM Updating the data is complex. NDM Easy To Update. Insertion & Updation Opreation 6 DBMS

7. HDM Deletion Of (P) Record (C) will also delete . NDM Free From deletion anomalies . HDM Retrieve Algo’s are Complex . NDM Retrieve algo’s are less complex . Thanks… Deletion & Retrieve Operation 7 DBMS