Hi,

I have three relational tables name "User", "System" and "SubSystem". The mapping is system table has foreign key relation with User with primary key systemName and subSystem have column subSystemName, systemName, description where subSystemName and systemName is composite primary key for table SubSystem.

The problem is: I have one row in SubSystem table with blank space in subSystemName and some text in systemName. At the time of login, I am getting an exception :



Can any one tell me what is the exact problem coz I search on net and found that this exception comes when the related row is not present but my data is present into the DB.

Thanks
Abhishek