Connect everything. Relations link databases together; rollups summarise the linked data; formulas calculate new values.
Relations
Link items across databases — e.g. Tasks → Projects → Clients. Changes flow through automatically, so you never duplicate data.
Rollups
Pull and aggregate data from a relation — count tasks, sum hours, or show the latest due date.
Formulas
Calculate values from other properties using functions — progress indicators, status logic, formatted dates, and more.
Tip: Relations are Notion's superpower. If you're copying data between databases by hand, you probably need a relation.
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