Rule #1Build-In-Property begin always with d + Attribute in CamelCase
Sample: WebExtension = dWebExtension
Rule #2Custom-Property begin always with x + Name of the Information Field from Configuration Manager [in CamelCase]
Sample: Comments = xComments
If you have Oracle Database Background and the development machine is yours, you can try following select statement to bring this information into you JDeveloper.
select column_name,data_type from dba_tab_columnswhere table_name = 'REVISIONS' or table_name='DOCMETA'order by column_name;