Relational Data Model
The relational data model was first introduced in 1970 by E. F. Code.
First DBMS built on relational data model was System R
Another Relational DBMS built during those days was INGRES
It represents data in the form of tables.
It based on mathematical relations
Components of Relational Data Model
Data Structure
Data are organized in the form of tables with Row and Columns
Data Manipulation
To performed different powerful operations in the relations
Data Integrity
Set of rule to maintain the accuracy of data
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