Bruce Momjian has just published a book on PostgreSQL that should be available from bookstores in the next month or so. It can be downloaded as a PDF file now from http://www.postgresql.org/docs/awbook.html I found the book to be well written and informative. I recommend it. Especially if you have to deal with large data sets, the combination of relational databases and R is very useful. Currently I am working on a project where we have information on 3.5 million subjects amounting to a total of 10.5 million records. Processing these in MySQL and PostgreSQL is much, much more efficient than what my colleagues were doing with SAS and SPSS. We took a sample of 180,000 subjects (550,000 records) and fit multilevel (linear mixed-effects) models using lme in R after accessing the data from the relational database. -- Douglas Bates bates@stat.wisc.edu Statistics Department 608/262-2598 University of Wisconsin - Madison http://www.stat.wisc.edu/~bates/ -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._