Metadata of source layer ADMIN DATA - Variable name, definition, reference time and source - Value domain mapped to the variable Statistical metadata S1 VAR1_ES VAR2_ES VAR3_ES VAR4_ES TARGET SCHEMA T1 VAR1_T VAR2_T VAR3_T M T1S1VAR1_ES=VAR1_T T1S1VAR2_ES+VAR3_ES =VAR2_T T1S2VAR10_ES=VAR3_T ADMIN DATA S2 VAR1_ES VAR2_ES VAR9_ES Data mapping
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