Changes between Version 5 and Version 6 of ERModel


Ignore:
Timestamp:
06/09/26 14:09:58 (12 days ago)
Author:
223091
Comment:

--

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  • ERModel

    v5 v6  
    9797==== contains (Rooms–!RoomEquipment) ====
    9898*'''Meaning:''' A room contains equipment entries with associated quantities.
    99 *'''Cardinality:''' Rooms (1) — RoomEquipment (N)
     99*'''Cardinality:''' Rooms (1) — !RoomEquipment (N)
    100100*'''Participation:'''
    101  * RoomEquipment participation is total (each entry must refer to exactly one room).
     101 * !RoomEquipment participation is total (each entry must refer to exactly one room).
    102102 * Room participation is partial (a room may have no equipment registered).
    103103
    104104==== used_in (Equipment–!RoomEquipment) ====
    105105*'''Meaning:''' Equipment types appear in room-equipment entries.
    106 *'''Cardinality:''' Equipment (1) — RoomEquipment (N)
     106*'''Cardinality:''' Equipment (1) — !RoomEquipment (N)
    107107*'''Participation:'''
    108  * RoomEquipment participation is total (each entry must refer to exactly one equipment type).
     108 * !RoomEquipment participation is total (each entry must refer to exactly one equipment type).
    109109 * Equipment participation is partial (an equipment type may exist without being assigned to any room).
    110110