database design - Model to link similar data together -


i importing issue tickets reporting tool one. want able report on differences between original tickets , imported ones once work has been done on them. tickets have been normalized have same attributes on both sides, difference between original ticket , import before work has been done id, 1 has in corresponding tool. wondering best model represent this.

right i'm thinking doing 1 table each tool, , having table link ids both tables, feel better suited 1 many or many many relationships 1 one.

i thought having 1 table , adding 1 column give linked id, don't know how can find out if issue came 1 tool or other. add column "type", don't know how be.

you want bridge table this;

this application id | source application | source application id


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