Top "Entity-relationship" questions

An entity-relationship model (ERM) is an abstract and conceptual representation of data, information aspects of a business domain or its process requirements.

How to generate an entity-relationship (ER) diagram using Oracle SQL Developer

I want to use Oracle SQL Developer to generate an ER diagram for my DB tables but I am new …

oracle oracle-sqldeveloper entity-relationship erd
Turn off constraints temporarily (MS SQL)

I'm looking for a way to temporarily turn off all DB's constraints (eg table relationships). I need to copy (using …

sql sql-server sql-server-2005 constraints entity-relationship
How to generate Entity Relationship (ER) Diagram of a database using Microsoft SQL Server Management Studio?

I want to generate ER diagram of SQL database using Microsoft SQL Server Management Studio however, I dont know how …

sql-server entity-relationship
How to get ER model of database from server with Workbench

Is there any way to get an ER model of a database from the server that is connected to my …

mysql entity-relationship mysql-workbench
How to identify a strong vs weak relationship on ERD?

A dashed line means that the relationship is strong, whereas a solid line means that the relationship is weak. On …

entity-relationship erd
How to handle many-to-many relationships in a RESTful API?

Imagine you have 2 entities, Player and Team, where players can be on multiple teams. In my data model, I have …

rest entity-relationship
One-to many relationships in ER diagram

I am trying to show the following in the ER diagram: There are instructors and courses, a course is taught …

database relational-database entity-relationship
Error 3004: Problem in mapping fragment starting at line

I have this error when I build my Web Service: Error 3004: Problem in mapping fragment starting at line 323: No mapping …

database entity-framework mapping entity-relationship edmx
Recommendation for a good entity relationship diagram building tool for occasional usage?

Freeware is a plus. Could you also describe with one sentence why it should be good enough for occasional usage? …

database-design diagram entity-relationship
Entity Relationship Diagram. How does the IS A relationship translate into tables?

I was simply wondering, how an ISA relationship in an ER diagram would translate into tables in a database. Would …

entity-relationship diagram database isa