In database terminology primary key refers to the column in a table that's intended to be the primary way of identifying rows. Each table must have exactly one, and it needs to be unique. This is usually some kind of a unique identifier associated with objects presented by the table, or if such an identifier doesn't exist simply a running ID number (which is incremented automatically).
PWP_ON1 | Competition calendar | https://github.com/pauliinan/competition | Pauliina Niemi |
PWP_ON2 | Pointless | https://github.com/Symbiatch/OuluWeb | Sami Kuhmonen |
PWP_ON3 | App for keeping track of your Stuff | https://github.com/shinr/iStore | Jukka Länsineva |
PWP_ON4 | Working shifts manager | https://github.com/immoju/pwp_shifts.git | Juha Immonen |
PWP_ON5 | LoRa-endpoint | https://github.com/tuhorkko/LoRaEndPoint | Hörkkö |
PWP_ON6 | xray röntgen picture database | https://github.com/KimmoLaakkonen/xraydatabase | Kimmo Laakkonen |
PWP_ON7 | Bike component usage hour tracking | https://gitlab.com/meepmeepm/pwp-bike-comp-track/wikis/home | Vesa Mäki |
PWP_ON8 | Virtual sticky note | https://github.com/amppari/oulupwp | Juho Pitkänen |
PWP_ON9 | FAQ Host | https://github.com/kiutter/FAQ-Host/ | Kimmo Utter |