I would like to use ERD Diagram (Entity Relationship Diagram) and wanted to check which is better among the 3 levels: The Conceptual Data Model, The Logical Data Model and The Physical Data Model. The company I am working for has a lot of databases. I have searched some consultant database modeling too but I need more info about this first.
Hi Marian,
    You mentioned your company has a lot of databases, you have to make sure before choosing which data model to use is if your database can work on the 3 models. Each database model can give an advantage and disadvantage at the same time.  Let me list down each data model and their key points to help you decide:
Hello Marian Bfinch,
            If you want to know about these things then you can must a good background of the database. Because these things are the most time consuming thing of a the database because there you are initializing the database. After that you have to make tables and then you have to perform 1st , 2nd and 3rd normalization. The logical data model is a good one as you can check each and every thing at this level so I suggest you to see the things in your database at logical model.
