Why dont you create a select query statement for binding three different tables and access this query in .rpt file.
Example:select query
Select
[MobNo]
,[Name]
,[WhomToMeet]
,[CheckInTime]
,[CheckOutTime]
,[CheckInItems]
,[CheckOutItems]
,[PendingItems]
,[PurPoseOfVisit]
,[ShiftName]
,[DeptName]
,[CompName] from Visitor
JOIN EmpMaster on EmpMaster.EmpMNo = Visitor.VisitorMobNo
JOIN ShiftMaster on ShiftMaster.ShiftCode=Visitor.VCompCode
JOIN DeptMaster on DeptMaster.DeptCode=Visitor.VisitorType
where IsBlackList=0
AND EmpCode =1
Now you can write your own select query as per logic.