text: CREATE TABLE "Target" (
  	"litattr1" INT,
  	-- PRIMARY KEY("PK"),
  	"key1attr1" CHAR(4),
  	"key1attr2" CHAR(4),
  	"key2attr1" CHAR(4),
  	"key2attr2" CHAR(4),
  	UNIQUE ("key1attr1", "key1attr2"),
  	UNIQUE ("key2attr2", "key2attr1")
  );
  
  CREATE TABLE "Source" (
  	"ID" INT PRIMARY KEY,
  	"attrA" CHAR(4),
  	"attrB" CHAR(4),
  	FOREIGN KEY ("attrA", "attrB") REFERENCES "Target"("key2attr2", "key2attr1")
  );
  
  INSERT INTO "Target" ("litattr1", "key1attr1", "key1attr2", "key2attr1", "key2attr2")
                VALUES (1010      , 'K1A1'     , 'K1A2'     , 'K2A1'     , 'K2A2');
  
  INSERT INTO "Source" ("ID", "attrA", "attrB")
                VALUES (1100, 'K2A2' , 'K2A1' );
  