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November 2009

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[Monetdb-announce] Announcement: New Nov2009 feature release of MonetDB suite
by Stefan Manegold 29 Nov '09

29 Nov '09

Dear all, The MonetDB team at CWI/MonetDB BV are pleased to announce the new "Nov2009" feature release of the MonetDB suite of programs. This feature release is backward compatible with the previous releases (Nov2008 through Aug2009-SP2). Caveat 1: In MonetDB/XQuery, we extended and improved the use of value indices on comparisions between a value and an XPath ending in text() or attribute access (e.g., doc(x)//x/y[z/text() = "foo"] and for $x in doc//x/y where $x/@z = "bar" return $x); such queries do not need scanning data, but start at the index and navigate backwards from there. This required a change in the physical database storage. While the Nov2009 release of MonetDB/XQuery can still read older (pre-Nov2009) databases, it is recommended to (back-up and) re-shred all documents to benefit from the new indices and achieve optimal performance. Caveat 2: When upgrading from a release older than May2009 (i.e., Nov2008 through Feb2009-SP2), you need to move your write-ahead log following the "recommended" instructions for SQL (<http://monetdb.cwi.nl/Development/Releases/May2009/#SQL>) and/or XQuery (<http://monetdb.cwi.nl/Development/Releases/May2009/#XQuery>). More information on the new release is available at <http://monetdb.cwi.nl/Development/Releases/Nov2009/>. The sources and binaries are available at <http://monetdb.cwi.nl/Download/>. Enjoy! The MonetDB team at CWI/MonetDB BV. -- | Dr. Stefan Manegold | mailto:Stefan.Manegold@cwi.nl | | CWI, P.O.Box 94079 | http://www.cwi.nl/~manegold/ | | 1090 GB Amsterdam | Tel.: +31 (20) 592-4212 | | The Netherlands | Fax : +31 (20) 592-4312 |

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