Final answer:
The relate between a layer attribute table and another table is saved in a map document in Geographic Information Systems (GIS).
Step-by-step explanation:
In Geographic Information Systems (GIS), the relate between a layer attribute table and another table is saved in C. a map document. A map document (such as a .mxd file in ESRI ArcGIS) is where you can create and manage your map service. It contains information about layers including their symbology, attributes, and the relationship between attribute tables and other tables.