Field is a virtual table..
A virtual table contains information provided by the system. In C/SIDE, you have access to a number of virtual tables. They work in much the same way as normal database tables, but you cannot change the information in them. That is, you can only read the information. Another difference is that virtual tables are not stored in the database (as normal tables are) but are computed by Microsoft Dynamics NAV at run time.
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A virtual table contains information provided by the system. In C/SIDE, you have access to a number of virtual tables. They work in much the same way as normal database tables, but you cannot change the information in them. That is, you can only read the information. Another difference is that virtual tables are not stored in the database (as normal tables are) but are computed by Microsoft Dynamics NAV at run time.
-Mohana
http://mohana-dynamicsnav.blogspot.in/
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http://stackoverflow.com/questions/21223762/read-dynamics-nav-table-metadata-with-sql
NAV Developer