Creating an E-R Diagram
To create an ER diagram, the following steps should be followed:
To perform the data modelling designer must take the following decision.
Symbols used in ER Diagram
There are various symbols and notations that are used to create an ER diagram. These symbols and their names are listed below in the table4.1.
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poor contrast or dim picture; but there is sufficient brightness, dim picture; insufficient brightness, out of focus or defocus, arcing in picture tube, , silvery picture
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