IBM UFO repository
Michael N. Gubanov, Lucian Constantin Popa, Howard Ho, Hamid Pirahesh, Jeng-Yih Chang, Shr-Chang Chen · Proceedings of the VLDB Endowment · 2009
Currently, WWW , large enterprises, and desktop users suffer from an inability to efficiently access and manage differently structured data. The same data objects (e.g. Product) stored by different databases, repositories, distributed web storage systems, etc are named, referenced, and combined internally into schemas or data structures differently. This leads to structural mismatch of data that often consists of the same semantic objects (e.g. EBay and Yahoo! online auction offers).