SMHI Presentation at IBM Kista April 2002 66 7000% better performance  >100x Exploit computational indices instead of B-trees/R-trees  7x Shm-communication (unless you have linked with Fortran subroutines containing COMMON…)  5x Always reduce number of database calls (Essential)  5x Using binary transport-format for complex objects (geodetic)  5x Normalise all tables with object-columns (geodetic, LOs etc.)  5x Ship operations to data instead of data to operations  5x Replace r-trees with functional indices on accessor-UDRs for geo- objects (Geox is great!)  5x Run ISPY on thy SQL-clients.