Specify whether the "real" column should be setup from the "virtual" column before writing to the table.
This option means that information entered in a virtual column will be written out to the table column(s) used to define the virtual columns. The virtual columns are the user input columns and will write information to a real column in the table. For example, the user enters a date in DD/MM/YY and it is then converted and stored in the table as YY/MM/DD.
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