All Questions
3 questions
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E-R diagram 1-to-1 mandatory relationship for two superclass entities to relational schema
How are two superclass entities that are connected to a mandatory 1-to-1 relationship converted to relational schemas? These two superclass entities are also abstract, meaning that they will not have ...
- 101
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2
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Multiple Primary-Foreign Key connections between Tables Redundant?
I have two tables, Reviews and Critic
I'm pretty new to RDBMS and I was wondering if the connection between Review.rID and Critic.Review is redundant?
My reasoning is that a single critic can have ...
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1
answer
211
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Skip ERD in database implementation [closed]
AS we know that entity relation diagram(ERD) is an important concept in database implementation, But I was wondering that can we skip this step when creating a small database containing a few tables i....
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