To support safe syncing, Bracket matches records based on their primary key. Below, we layout what Bracket uses for primary keys depending on the data source, and if there is any prep work needed from you.

ToolPrimary keyPreparation needed?
AirtableAirtable record IDNo
NotionNotion object IDNo
Google SheetsUnique field created by userYes, see guide
PostgresUnique field created by userYes, see guide
MongoDBMongoDB object IDNo
SnowflakeUnique field created by userYes, see guide