opendata

How to map subjective data in the semantic web?

I've been looking at the freebase project for storing data. It seems to be a great place to store concrete, objective data like names, locations and dates. Is it a good place to store subjective data like opinions or ratings? Is there another/better open data, semantic data store or strategy for storing and querying this kind of infor...

Good online resource for common databases / open databases?

I am trying to find the best area to download SQL tables of common subjects like states, countries, zip codes. Maybe even public/government information like FDA or FCC information. Does such a resource exist and is it mature? ...

Free Large datasets to experiment with Hadoop

Do you know any large datasets to experiment with Hadoop which is free/low cost? Any pointers/links related is appreciated. Prefernce: Atleast one GB of data. Production log data of webserver. Few of them which I found so far: http://dumps.wikimedia.org/enwiki/20100130/ http://wiki.freebase.com/wiki/Data_dumps http://aws.amazon.co...

OpenRowSet, OpenQuery, OpenDataSource - which is better in terms of performance

This can be a debatable answer, but I'm looking for the case where a local Excel file needs to be exported to a local SQL Server 2008' table. Has anyone ever had the chance to check execution time to compare OpenRowSet/OpenQuery/OpenDataSource for a very large file import in SQL Server 2008? I'm able to use any of the 3 options, and th...