Joining data is typically used to append the fields of one table to those of another through an attribute or field common to both tables. You can choose to define the join based on either attributes or a predefined geodatabase relationship class or by location (also referred to as a spatial join). You will only see join by relationship class listed if you are joining geodatabase data for which a relationship class has already been defined in the geodatabase.
Relating tables simply defines a relationship between two tables. The associated data isn't appended to the layer's attribute table like it is with a join. Instead, you can access the related data when you work with the layer's attributes.
Saif Ullah is a remote sensing (RS) expert and geographic information system (GIS) analyst. He has done BS and MS in RS & GIS from prestigious institutes in Pakistan and has more than 5 years’ experience in his field. He is a dedicated researcher and is very keen to learn new knowledge and skills and share his skills and expertise with others.
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