OpenSAFELY-TPP Database Schema¶

This report displays the schema of the OpenSAFELY-TPP database. It is part of the OpenSAFELY platform's technical documentation and is published at https://reports.opensafely.org/.

The schema is read from the OpenSAFELYSchemaInformation table, which is refreshed at the same time as the core SystmOne primary care datasets. There are some non-automated steps required to update the schema information when a new table is added to the database — if you can't see a table that you are expecting to see, then please speak to TPP.

If you would like to use the OpenSAFELY platform, then you should read our documentation, our principles, and our process for onboarding new users. If you would like to see the code we used to create this report, then you can view it on GitHub.

Data Sources¶

The core SystmOne primary care datasets are stored in the S1 tables in the database. The table below lists other, externally-linked datasets:

¹Used for deriving household variables
²Collected at the point of vaccination

Some of these tables are accompanied by additional tables. For example, the OPA table contains the core out-patient appointment event data, and is accompanied by the OPA_Cost, OPA_Diag, and OPA_Proc tables.

Report Run Date¶

Table Schemas¶

The table schemas contain the following information:

• ColumnName, the column name
• ColumnType, the column type, such as integer, numeric, or date. For more information, see SQL Server's data types documentation
• Precision, Scale and MaxLength. For more information, see SQL Server's precision, scale, and length documentation
• IsNullable, whether NULL values are accepted

Use the links in the list below to jump to a table schema.