EMIS primary care

Warning

Research access to the backend provided by EMIS is temporarily unavailable, pending funding arrangements between NHS England and EMIS. When funding has been secured, we will publish a timeline for gradually reopening access.

OpenSAFELY-EMIS database builds

When EMIS receive data from external data sources (eg ONS), records are appended to the relevant tables, not updated. The relevant tables have an upload_date column, and to get the latest data, we have to query for on upload_date.