1. An electronic document creating apparatus, comprising: a document identification information obtaining device configured to obtain and input document identification information put on a sheet document, by scanning the sheet document, said document identification information identifying an electronic document per page stored in a storage section of a database serving as an output source of the sheet document, said document identification information including information representing the storage section and the page of the electronic document; an electronic document extraction device configured to extract at least two pages of electronic documents from respective different sections specified by the document identification information obtained by scanning a plurality of sheet documents different from each other; and a new document creation device configured to create new electronic documents by connecting the at least two pages of the electronic documents read from the respective different storage sections, in a prescribed order of pages, said new electronic document being stored in a prescribed storage section of the database.