RealTime Scenarios

Real Time Scenarios:

1. The Situation is I do have two Check boxes (Checkbox A & Checkbox B).And My condition is to allow any one of the check box is true ,not the two at a time.
   
   
   If checkbox A is true , Check box B should be False  and IF Checkbox B is true , Check box  B should be False , Both should not be TRUE.
   
   
   
   
   Ans:use the Validation rule to do this and display the error if both are checked
   
   
   In Error Condition Formula 
   
   
   AND(checkboxA,checkboxB)
   
   
   In ERROR MESSAGE:select only once checkbox
   
   
   How will you handle 10001 SOQL problems in apex?
   Ans:10001 error means “Too many query rows”
   Public static  integer getTotalVotes()

      {

           integer totalIdea = [SELECT count() FROM Vote where Parent.Type='Idea' limit 501

   ];

           return totalIdea ;

      }