Where to place derived attributes





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I have an assignment which requires me to design a database.



I have 3 entities WARD, BED, and BED_ASSIGMENT which is the composite entity between BED and WARD.



BED primary key consists of bed_id, ward_id (each ward has bed number 1 for example, so I need ward_id to properly identify it)



My question is:
I have two attributes: "total_bed_ count" and "total_vacant_bed_count". In which entity should I place them?



thank you,









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    I have an assignment which requires me to design a database.



    I have 3 entities WARD, BED, and BED_ASSIGMENT which is the composite entity between BED and WARD.



    BED primary key consists of bed_id, ward_id (each ward has bed number 1 for example, so I need ward_id to properly identify it)



    My question is:
    I have two attributes: "total_bed_ count" and "total_vacant_bed_count". In which entity should I place them?



    thank you,









    share







    New contributor




    Myaccount is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























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      I have an assignment which requires me to design a database.



      I have 3 entities WARD, BED, and BED_ASSIGMENT which is the composite entity between BED and WARD.



      BED primary key consists of bed_id, ward_id (each ward has bed number 1 for example, so I need ward_id to properly identify it)



      My question is:
      I have two attributes: "total_bed_ count" and "total_vacant_bed_count". In which entity should I place them?



      thank you,









      share







      New contributor




      Myaccount is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have an assignment which requires me to design a database.



      I have 3 entities WARD, BED, and BED_ASSIGMENT which is the composite entity between BED and WARD.



      BED primary key consists of bed_id, ward_id (each ward has bed number 1 for example, so I need ward_id to properly identify it)



      My question is:
      I have two attributes: "total_bed_ count" and "total_vacant_bed_count". In which entity should I place them?



      thank you,







      erd





      share







      New contributor




      Myaccount is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      Myaccount is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








      share



      share






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      asked 3 mins ago









      MyaccountMyaccount

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