guess its d drivers , since u said wen it gets outdated
 
        
                    
             
        
        
        
Opinion is the answer, every thing else can be compared with the data
        
             
        
        
        
Answer:
Combination of one or more columns used to identify particular rows in a relation is a key
 
        
             
        
        
        
This belief reflects an omnipotent view of management.