1202-BGuthrie

1202-BGuthrie - Brian Guthrie Database System Notes...

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Brian Guthrie Database System Notes December 02, 2008 Topics XML Data Streams DB tunings Scientifc Databases I. XML Recommendation oF W3C XML = Data XML generated by applications XML consumed by applications Easy access across platForms, organizations XML Data has structure Database Issues How to model XML? (graphs) How to query XML? (Xquery) How to share XML? (In a relation db?) How to process XML eFfciently? II. Data Streams Data Stream Processing Data are continuously generated From multiple sources sensor surveillance devices stock market Queries are also continuous Alert when price oF IBM changes 1% Report average temperature oF room every halF minute Problems? Data volume is infnite, thousands oF sources Queries are trigger-timed, hundreds oF queries Issues Data model? (relational? time-series?) Query Processing? (Approximate answers with correctness bounds) System architecture (DBMS? DSMS?)
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1202-BGuthrie - Brian Guthrie Database System Notes...

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