DROP TABLE IF EXISTS url;
DROP TABLE IF EXISTS  urlinfo;
DROP TABLE IF EXISTS  dict;
DROP TABLE IF EXISTS  bdict;
DROP TABLE IF EXISTS  crossdict;
DROP TABLE IF EXISTS  categories;
DROP TABLE IF EXISTS  qtrack;
DROP TABLE IF EXISTS  qinfo;
DROP TABLE IF EXISTS  server;
DROP TABLE IF EXISTS  srvinfo;
DROP TABLE IF EXISTS  links;
DROP TABLE IF EXISTS  wrdstat;
DROP TABLE IF EXISTS  qcache;
DROP TABLE IF EXISTS bdicti;
