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.