Changes between Version 33 and Version 34 of ERModel


Ignore:
Timestamp:
05/26/26 02:13:57 (39 hours ago)
Author:
232012
Comment:

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  • ERModel

    v33 v34  
    9292 Each Artist has multiple Releases, and multiple Artists can be associated with one Release.
    9393
    94  **Attribute:** release_ordinal
     94 **Attributes:** release_ordinal, type
    9595
    9696**3. features** (Song ↔ Artist, M:N)\\
    … …  
    126126 Each !WishlistItem refers to one Product, while a Product can appear in multiple !WishlistItems.
    127127
    128 **13. features** (Single ↔ Artist, M:N)\\
    129  Each Single can feature multiple Artists, and each Artist can be featured in multiple Singles.
    130 
    131  **Attribute:** single_ordinal
    132 
    133128== Entity-Relationship Model History
    134129
    … …  
    148143* Added discount_percentage attribute to Admin, and points_used and points_earned to Order.
    149144[attachment:ERModel_v04.png Version 4]
    150 * Added ordinal number attributes to has and both features relationships.
     145* Added ordinal number attributes to has and features relationships.
     146* Removed features relationship Single ↔ Artist and added type attribute to Release ↔ Artist relationship
    151147* Removed foreign keys from !OrderItem and !WishlistItem
    152148* Changed refers relation Product ↔ !WhislistItem N:M to 1:N