Changes between Version 2 and Version 3 of ERModel


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Timestamp:
05/02/26 15:48:58 (4 days ago)
Author:
232012
Comment:

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  • ERModel

    v2 v3  
    33A full-page width image in PNG format of the latest version of the diagram (ERModel_vNN.png)
    44
    5 == Data requirements
     5== Entities
     6
     7List all entities and relationships with the following information for each of them
     8
     9Entity/relationship name: one paragraph of explanation, what does the entity/relationship represent, why it is needed, why is it modeled the way it is
     10
     11Candidate keys: If you have multiple candidates for the primary key, list them and explain which one you chose as the primary key and why you chose it as the primary key
     12
     13List of entity attributes, for each of them: the data type (numeric/text/date/…) and whether there are any restrictions in the input form/format (required/optional, special format, value interval, …)
     14
     15**NAME OF ENTITY/RELATIONSHIP**
     16
     17DESCREPTION OF THE ENTITY/RELATIONSHIP
     18
     19 * **Candidate Keys:**
     20   * NAME_OF_KEY (TYPE OF KEY)
     21 * **Attributes:**
     22   * NAME_OF_ATTRIBUTE (TYPE, Required/Optional) - DESCREPTION
     23
     24
     25== Relationships
    626
    727List all entities and relationships with the following information for each of them