Table-Definitions.md

 # Table Definitions
 
-Updated with v1.0.
+Updated with v1.1.
 
 Table definitions is a JSON file used by HOTMapper to set the table's primary key(s) and foreign key(s). It's also used
 to fill the data of an auxiliary that stores information about the table's source. This source table is
@@ -36,6 +36,10 @@ The table_definitions JSON has four attributes in the following format:
   * Foreign keys of the table. This field can have zero or more.
 <br/><br/>
 
+* *optional* "columns": <dictionary with the columns name with the value being a list of the `type`, `column_id`>
+  * This field is automatically filled when executing a create or remap command with the table.
+  * Eg.: "columns": {"id": ["INT","OBJID"],...}.
+  
 The HOTMapper comes with an example of table definitions in the folder hotmapper/table_definitions, named 
 example_table_definition.json and shown bellow.