On 10/05/2018 14:08, Dimitry Sibiryakov wrote: > 10.05.2018 18:44, Vlad Khorsun via Firebird-devel wrote: >> Is it possible\make sence to add a datetime field with "valid from" >> mark ? Or something like that, some kind of version mark. > > IMHO, one of advantages of using UDR for subj is that much more > fields can be added any time as needed by upgrading a single library > while a virtual table is fixed to ODS and has to be decided once and > forever. >
UDR needs metadata too, so I don't see a difference in this respect. Adriano ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel