--- /dev/null
+
+CREATE TABLE refObj (
+ source varchar(255),
+ h_occurrence varchar(255),
+ h_position varchar(255),
+ h_depth integer
+);
+CREATE TABLE refSort (
+ source varchar(255),
+ h_position varchar(255),
+ h_depth integer,
+ h_sort varchar(255)
+);
+CREATE TABLE refRel (
+ source varchar(255),
+ h_position varchar(255),
+ h_depth integer
+);
+CREATE TABLE objectName (
+ source varchar(255),
+ value varchar(255)
+);
+
+CREATE INDEX refObj_source ON refObj (source);
+CREATE INDEX refObj_target ON refObj (h_occurrence);
+CREATE INDEX refObj_position ON refObj (h_position);
+CREATE INDEX refSort_source ON refSort (source);
+CREATE INDEX objectName_value ON objectName (value);
+