Most voted "der" questions
Entity-Relationship Diagram
Learn more…8 questions
Sort by count of
-
5
votes3
answers428
viewsWhat is the relationship between ERI and relational databases?
What is the relationship between ERI and relational database?
-
4
votes1
answer167
viewsCan an employee be an individual?
Was recommended, in this question, maintain the relationship between Pessoa Física and Funcionário as generalization (Employee extends Physical Person). I do not understand why it is not in this…
-
3
votes1
answer1367
viewsConvert MER (Entity Relationship Model) diagram to VB.NET or C#
I developed the diagram of the tables of the layout of the XML of Nfe, are 58 tables with its relationships. I would like to generate the classes automatically from the diagram or it can be through…
-
3
votes2
answers16608
viewsWhat is the difference between MER (Relationship Entity Model) and DER (Relationship Entity Diagram)?
What is the difference between an MER diagram and an ERI diagram, with examples.
-
2
votes1
answer2262
viewsDER for student, discipline and course
A student can only have one course. A course has several disciplines. The student can take several courses of the course. My only doubt is what it would look like on the DER? Would really look that…
-
2
votes2
answers97
viewsReverse process modeling
Always, or almost, if the Conceptual ER is made and then we model the Logical ER, in the BR Modelo It is possible to create the Conceptual ER and generate the Logical ER automatically, but when…
-
1
votes1
answer332
viewsMysql database structure
Hello I need a small force to structure my data in a database. I have a table for exam procedures with an id, test name and value. Only the problem is that a "procedure" may contain other…
-
1
votes2
answers960
viewsClass X Diagram Entity-Relationship Diagram
I’m stuck in the POO X Relational Database. To better substantiate my inquiries follows, in first some (simplified) modeling I did: 1 - Class diagram Possible programming for this diagram: 1.1 -…