Relation DB design using ERD

I have to design a Relation DB using E-R diagram.

But i stuck up in one scenario: 1. How to map into relational design if a weak entity(say Subject) is dependent on another weak entity(say Section). 2. Section depends on Regular Entity (say Class). [This part is done.]

Also, i would like to know that mostly i have seen that Subjects are related to Student entity, but if i see in real world, i see it like "Student studies in Section and Subjects are taught in Section"

jdbc java sql

asked 24 May '13, 16:50

guptakvgaurav
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sql ×90
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question asked: 24 May '13, 16:50

question was seen: 2,619 times

last updated: 24 May '13, 16:50

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Relation DB design using ERD

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