Re: [ADMIN] performance issue using DBI

2002-06-06 Thread nikolaus
Nicolas, The more data your tables contain the more work PostgreSQL needs to do. Adding indexes on your tables makes the INSERTS slower due to additional overhead. Indexes speed up SELECT but slow down INSERT. Therefore OLTP systems tend to have few indexes and data warehouses many. Instead o

[ADMIN] performance issue using DBI

2002-06-06 Thread Nicolas Nolst
Hi all,I have developped a perl script to populate a database with two tables: sessionsand actions.the table actions contains the following columns: session_id, url, timestamp.The column session_id references to the table sessions.the table sessions contains the following columns: session_id, remo