| http://www.w3.org/ns/prov#value | - @Narenda - an on commit fast refresh materialized view could be used - just join the two together and have a constraint on it such that any time there is a row in the materialized view - it fails (we want no joins to actually 'work')ops$tkyte%ORA10GR2> create table primary_currency 2 ( country varchar2(2) primary key, 3 currency varchar2(3) 4 ) 5 /Table created.ops$tkyte%ORA10GR2> create materiali
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