Managing Structured Collections of Community Data
Data management is becoming increasingly social. The authors observe a new form of information in such collaborative scenarios, where users contribute and reuse information, which resides neither in the base data nor in the schema information. This "Superimposed structure" derives partly from interaction within the community, and partly from the recombination of existing data. They argue that this triad of data, schema, and higher-order structure requires new data abstractions that - at the same time - must efficiently scale to very large community databases.