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AnswerRe: Threading problem Pin
Mogaambo1-Aug-08 0:12
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AnswerRe: Threading problem Pin
Guffa1-Aug-08 2:44
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GeneralRe: Threading problem Pin
MarkB7771-Aug-08 2:56
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GeneralRe: Threading problem Pin
Mogaambo1-Aug-08 9:20
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MarkB7771-Aug-08 13:38
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QuestionSorting out the Data Pin
Hum Dum31-Jul-08 22:15
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AnswerRe: Sorting out the Data Pin
User 665831-Jul-08 22:45
MemberUser 665831-Jul-08 22:45 
I think you need three relations in this case:

Relation 1:
Group (ID PK, Name)
-----
1, Car
2, Bus
3, Sportscar
4, Bike
...


Relation 2:
Model (ID PK, Name)
----
1, car_model_1
2, car_model_2
n, car_model_n
n+1, bus_model_1
n+m, bus_model_m


Relation 3:
ModelToGroup (Model FK, Group FK)
----
1, 1
2, 1
n, 1
n+1, 2
n+m, 2
...


According to what model the user selects, you can look which group this model belongs to and count the groups.

regards

modified 12-Sep-18 21:01pm.

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