By default, digiKam uses two SQLite databases for storing essential data: digikam4.db and thumbnails-digikam.db. And to make the application run fast and smoothly, it’s a good idea to check and optimize the databases every now and then. Continue to read
This is a companion discussion topic for the original entry at https://www.digikam.org/news/2011-12-19_check_and_optimize_digikam_s_databases/