merge button when clicked merges the current group of potential duplicate data 320 into one record or file the merge mechanism is demonstrated using text version of code as shown in the computer program listing appendix wherein the data retained as correct is that which was selected and or edited by the user the data is sent to a table 321 where it is stored until the occurrence of the download back to the mpi server of the hospital database 325 the next or previous group of potential duplicate records is then displayed the bypass button 330 when clicked places the current group into the bypassed record queue 331 for further review the next group of potential duplicate records is then displayed 326 the for review button 340 when clicked places the current group into the supervisor review queue 341 these records will be reviewed by someone of authority for duplication the next group of potential duplicate records is then displayed 326 the last merge button 350 when clicked displays the last merged group to the user the previously merged group can then be unmerged edited and or remerged 351 when the search button 360 is clicked it provides the user with a search page with these available fields to be entered table 7 the following description assumes that each button has been clicked the next record button displays the next group of potential duplicates the pull chart button 370 puts the currently displayed group into a pull chart queue 371 for review and requires someone at the hospital to pull the medical charts on these persons to determine if they are duplicated the next group.