Questions tagged as 'der'

3
answers

What is the relationship between DER and relational database?

What is the relationship between DER and relational database?     
asked by 19.10.2016 / 00:08
2
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What is the difference between MER (Relationship Entity Model) and DER (Entity Relationship Diagram)?

What is the difference between a diagram of the MER and one of the DER, with examples.     
asked by 09.09.2018 / 20:12
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Convert MER (Relationship Entity Model) diagram to VB.NET or C # classes [closed]

I developed the diagram of NFe XML layout tables, there are 58 tables with their relationships. I would like to generate the classes automatically from the diagram or can be through the database as well. Is there any tool for this?     
asked by 10.06.2016 / 14:23
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DER for student, subject and course

A student can only take one course. A course has multiple disciplines. The student can take various course subjects. My only question is how would this look in DER? Would it really be that way? Since the student only has one co...
asked by 09.01.2015 / 20:51
2
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Inverse process modeling

Always, or almost, if ER Conceitual is made to then model ER Lógico , in the Model BR < a> it is possible to create ER Conceitual and generate ER Lógico automatically, but when there is a need to do the reverse proces...
asked by 25.04.2016 / 00:20
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MySQL database structure

Hello I'm having a hard time structuring my data in a database. I have a table for exam procedures with id, exam name and value. But the problem is that a "procedure" can contain other procedures, and in that case the unit value of each proce...
asked by 08.08.2016 / 16:12