How to connect datasets
This quick start covers how permissions can be used to collaborate with others, without sharing or losing control of your data.
There are two types of permissions: incoming and outgoing. Granting an outgoing permission enables others to reference your dataset in a query, without being able to access the dataset, and vice-versa.
Each permission gives a single user the ability to reference a single dataset. If you want a user to be able to reference more than one dataset you own, create a permission for each one.
Grant an outgoing permission
All permissions granted by you can be viewed in the Outgoing Permissions tab, and can be revoked at any time. Similarly, all permissions granted to you can be viewed in the Incoming Permissions tab.
Examine the connections between datasets
Next, switch to the Connections tab for an initial insight into the relationships between all the datasets you have permission to query.
You will see the overlap of the individuals in each pair of datasets, which can be explored further by selecting a row and examining the keys and categories.
Keys are anonymised versions of direct identifiers, such as
The key intersection shows the individuals who have been successfully matched across the datasets and gives an idea on how successfully the two datasets can be used together in a query.
The key fill rate shows how successfully the direct identifiers have been converted to keys and is one of the most important metrics in judging data quality.
Categories refers to the columns in the original dataset, such as
The category fill rate provides an understanding of the data types in the datasets and informs the types of queries which could be used.