Computer program product for domained incremental changes storage and retrieval

Claim 1

A computer program product having a computer-readable medium comprising at least one controller to enable a processor to perform incremental changes storage and retrieval, said at least one controller comprising; incremental storage adaptor means for enabling the processor to store a first change associated with a base file, rather than modifying said base file by said first change and storing said first change as a fiat new file, wherein said first new file is associated with a first application program; said incremental storage adaptor means for enabling the processor to store a second change associated with said base file, rather than modifying the base file by said second change and storing said second change as a second new file, wherein said second new file is associated with a second application program; and incremental retrieval adaptor means for enabling the processor to merge one of said first and second changes stored in one of said first and second new files with said base file thereby forming one of a first and second logical new file; wherein said incremental retrieval adaptor performs said merging in response to a call from application programs running on the processor, wherein said call identifies one of said first new file and said second new file, and said incremental retrieval adaptor means then provides or otherwise makes one of said logical new files available.