addStructure=addStructure.replaceAll("varchar\\(", "varchar2\\(");
String addFK = "ALTER TABLE containers add constraint structure_fk foreign key (structure_inode) references structure(inode)";
String containerQuery = "Select * from tree where child in(Select inode from inode where type='containers') and "
+ "parent in(select inode from structure)";
dc.executeStatement(addStructure);
dc.executeStatement(addFK);
dc.setSQL(containerQuery);
List<Map<String, String>> treeResults = dc.loadResults();
for(Map<String,String> tree : treeResults){
String stInode = tree.get("parent");