Need Help to create Import/Export Excel Functionality with some BPM tools

We want to implement admin panel [with open source BPM tool like Activiti , kissflow , processmaker etc] from where we can [without codding] [login to view URL] Excel file into mysql data base [login to view URL] mysql data though BPM tool in to excel file [login to view URL] Add/Edit/Delete functionality in Grid [login to view URL] we are performing import operation then make sure that first check existing data with key and perform operation like UpdateAdd Example : We have table "Target" and Fields are EmpID,Target EmpID Target 1 10 2 14 3 34 Now let say we want to import Excel file then first we need to check whether employee target exists or not if exists then overwrite other wise add new entry