Question:
I had following business logic. In this Op1 and Op2 represents some operation. And param1,param2,... represents parameters required for executing these operations
Op1=param1, param2 Op2=param1, param2, param3
Now in UI I had a drop down list containing "Op1" and "Op2". Following should happen based on my business logic 1) If I select operation as "Op1" there should be 2 text fields enabled on UI corresponding to param1 and param2. Similarly for "Op2" there should be 3 text fields
Now once user enters data I need to persist the data hence in my DB 1) Corresponding to "Op1" I should store value of param1 and param2 2) Corresponding to "Op2" I should store values of param1, param2 and param3
Please guide me how can I achieve this?
Solution:1
Well I'm no db expert, but probably you would have a table for Ops with whatever pertinent info
OpId OpName Permissions.... 0001 doStuff 001001001... And you'd have a table for params
ParamId ParamName Desc... 0001 param1 whatever... 0002 param2 And finally a many-many relation table
OpId ParamId ParamValue 0001 0001 value1 0001 0002 value2 This would work if you have a common set of Operation, and parameters. However, it maybe overkill. Also, if you're params are never reused (ie. param1 for op1 doesn't mean the same thing as param1 for op2, then you wouldn't store them in a separate table.
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