E-r diagram, Database Management System

Let us now make the E-R diagram for the student database as per the explanation given in the previous section.

We can also states the overall logical structure of a database using ER model graphically with the help of an E-R diagram.

ER diagrams are composed of:

  • Rectangles showing entity sets.
  • Ellipses showing attribute.
  • Diamonds showing relationship sets.

823_E-R DIAGRAM.png

Figure: ER diagram of COLLEGE database

Posted Date: 3/6/2013 6:23:11 AM | Location : United States

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