How to create composed key in Workbench?











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I have table OrdersPhoto with two foreign keys: Order_Id and Photo_Id:



How to create a composed key based on them as: Order_Id__Photo_Id using Workbench? Should it be additional field, or just set up primary key for each?



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  • So, is it enough to set up two foreign keys as primary keys to make compose key?
    – OPV
    Nov 18 at 1:28















up vote
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down vote

favorite
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I have table OrdersPhoto with two foreign keys: Order_Id and Photo_Id:



How to create a composed key based on them as: Order_Id__Photo_Id using Workbench? Should it be additional field, or just set up primary key for each?



enter image description here






mysql sql mysql-workbench workbench







share|improve this question
























  • So, is it enough to set up two foreign keys as primary keys to make compose key?
    – OPV
    Nov 18 at 1:28













up vote
0
down vote

favorite
1









up vote
0
down vote

favorite
1






1





I have table OrdersPhoto with two foreign keys: Order_Id and Photo_Id:



How to create a composed key based on them as: Order_Id__Photo_Id using Workbench? Should it be additional field, or just set up primary key for each?



enter image description here






mysql sql mysql-workbench workbench







share|improve this question















I have table OrdersPhoto with two foreign keys: Order_Id and Photo_Id:



How to create a composed key based on them as: Order_Id__Photo_Id using Workbench? Should it be additional field, or just set up primary key for each?



enter image description here






mysql sql mysql-workbench workbench




mysql sql mysql-workbench workbench






share|improve this question















share|improve this question













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edited Nov 18 at 1:28

























asked Nov 18 at 1:12









OPV

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  • So, is it enough to set up two foreign keys as primary keys to make compose key?
    – OPV
    Nov 18 at 1:28


















  • So, is it enough to set up two foreign keys as primary keys to make compose key?
    – OPV
    Nov 18 at 1:28
















So, is it enough to set up two foreign keys as primary keys to make compose key?
– OPV
Nov 18 at 1:28




So, is it enough to set up two foreign keys as primary keys to make compose key?
– OPV
Nov 18 at 1:28












1 Answer
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For the PK you can create the composite key by simply activating the checkboxes for all columns participating in that key. For all others (and alternatively also for the PK) use the index tab in the table editor.



enter image description here]



Use the index details list to add and remove columns for a key. You can indicate the column order here too. Just change the number in the # column.






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    up vote
    0
    down vote













    For the PK you can create the composite key by simply activating the checkboxes for all columns participating in that key. For all others (and alternatively also for the PK) use the index tab in the table editor.



    enter image description here]



    Use the index details list to add and remove columns for a key. You can indicate the column order here too. Just change the number in the # column.






    share|improve this answer

























      up vote
      0
      down vote













      For the PK you can create the composite key by simply activating the checkboxes for all columns participating in that key. For all others (and alternatively also for the PK) use the index tab in the table editor.



      enter image description here]



      Use the index details list to add and remove columns for a key. You can indicate the column order here too. Just change the number in the # column.






      share|improve this answer























        up vote
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        up vote
        0
        down vote









        For the PK you can create the composite key by simply activating the checkboxes for all columns participating in that key. For all others (and alternatively also for the PK) use the index tab in the table editor.



        enter image description here]



        Use the index details list to add and remove columns for a key. You can indicate the column order here too. Just change the number in the # column.






        share|improve this answer












        For the PK you can create the composite key by simply activating the checkboxes for all columns participating in that key. For all others (and alternatively also for the PK) use the index tab in the table editor.



        enter image description here]



        Use the index details list to add and remove columns for a key. You can indicate the column order here too. Just change the number in the # column.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 18 at 10:51









        Mike Lischke

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