<http://webisa.webdatacommons.org/281574858>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com> .
<http://webisa.webdatacommons.org/281574858>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/311990279>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/281574858> .
<http://webisa.webdatacommons.org/281574858>	<http://www.w3.org/ns/prov#value>	"The present invention relates to backup control apparatus and method for storing a large amount of data which is processed to a medium such as a magnetic tape or the like and for backing up and, more particularly, to backup control method and apparatus for combining a backup of all data and a backup of only updating data as differences after that, and for using those backup data." .