The WFCAM Science Archive UKIDSS databases contain calibrated data from the UKIRT Wide Field Camera (WFCAM) pre-planned public survey operations through the UKIDSS project. The UKIDSS surveys are as follows:

• Large Area Survey (LAS) : on completion, 4000 sq.deg. to K=18.4
  short exposures, unstacked, but later 2nd pass
• Galactic Plane Survey (GPS) on completion, 1800 sq.deg. to K=19.0
  main survey : short exposures, unstacked, but later 2nd pass
  some deeper stacked sub-components
• Galactic Cluster Survey (GCS) on completion, 1000 sq. deg. to K=18.7
  short exposures, unstacked, but later 2nd pass
• Deep Extragalactic Survey (DXS) 35 sq.deg. K=21 on completion
  longer exposures, and stacked over many nights
• Ultra Deep Survey (UDS) : 0.75 sq.deg. K=23 on completion
  Very long exposure, stacked over many many nights

The data are organised in schemas, which include tables, views, indexes and constraints.