{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T10:37:09Z","timestamp":1760783829004},"reference-count":13,"publisher":"Association for Computing Machinery (ACM)","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Proc. VLDB Endow."],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:p>Increasingly data is being bought and sold online. To facilitate such transactions, online data market-places have emerged to provide a service for sellers to price views on their data, and buyers to buy such views. These marketplaces neither support the sale of ad-hoc queries (that are not one of the specified views), nor do they support queries that join datasets. We present QueryMarket, a prototype data marketplace that automatically extrapolates prices to ad-hoc queries, including those with joins, from the manually priced views. We call this capability \"query-based pricing\" and describe how it is superior to existing pricing methods, and how it provides more flexible pricing for the sellers. We then show how QueryMarket implements query-based pricing and how it generates explanations for the prices it computes.<\/jats:p>","DOI":"10.14778\/2367502.2367548","type":"journal-article","created":{"date-parts":[[2014,6,24]],"date-time":"2014-06-24T12:17:57Z","timestamp":1403612277000},"page":"1962-1965","source":"Crossref","is-referenced-by-count":32,"title":["QueryMarket demonstration"],"prefix":"10.14778","volume":"5","author":[{"given":"Paraschos","family":"Koutris","sequence":"first","affiliation":[{"name":"University of Washington, Seattle"}]},{"given":"Prasang","family":"Upadhyaya","sequence":"additional","affiliation":[{"name":"University of Washington, Seattle"}]},{"given":"Magdalena","family":"Balazinska","sequence":"additional","affiliation":[{"name":"University of Washington, Seattle"}]},{"given":"Bill","family":"Howe","sequence":"additional","affiliation":[{"name":"University of Washington, Seattle"}]},{"given":"Dan","family":"Suciu","sequence":"additional","affiliation":[{"name":"University of Washington, Seattle"}]}],"member":"320","published-online":{"date-parts":[[2012,8]]},"reference":[{"key":"e_1_2_1_1_1","unstructured":"http:\/\/gnip.com.  http:\/\/gnip.com."},{"key":"e_1_2_1_2_1","unstructured":"http:\/\/www.aggdata.com\/.  http:\/\/www.aggdata.com\/."},{"key":"e_1_2_1_3_1","unstructured":"https:\/\/datamarket.azure.com\/.  https:\/\/datamarket.azure.com\/."},{"key":"e_1_2_1_4_1","unstructured":"http:\/\/www.boost.org.  http:\/\/www.boost.org."},{"key":"e_1_2_1_5_1","unstructured":"http:\/\/www.gnu.org\/software\/glpk\/.  http:\/\/www.gnu.org\/software\/glpk\/."},{"key":"e_1_2_1_6_1","unstructured":"http:\/\/code.google.com\/apis\/chart\/interactive\/docs\/reference.html.  http:\/\/code.google.com\/apis\/chart\/interactive\/docs\/reference.html."},{"key":"e_1_2_1_7_1","unstructured":"http:\/\/www.infochimps.com\/.  http:\/\/www.infochimps.com\/."},{"key":"e_1_2_1_8_1","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1145\/2213556.2213582","volume-title":"Proceedings of the 31st symposium on Principles of Database Systems, PODS '12","author":"Koutris P.","year":"2012","unstructured":"P. Koutris , P. Upadhyaya , M. Balazinska , B. Howe , and D. Suciu . Query-based data pricing . In Proceedings of the 31st symposium on Principles of Database Systems, PODS '12 , pages 167 -- 178 , New York, NY, USA , 2012 . ACM. 10.1145\/2213556.2213582 P. Koutris, P. Upadhyaya, M. Balazinska, B. Howe, and D. Suciu. Query-based data pricing. In Proceedings of the 31st symposium on Principles of Database Systems, PODS '12, pages 167--178, New York, NY, USA, 2012. 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