Create searchtable for QGIS web client [closed]

Question

i execute this query on SQL editor of pgAdmin III

    CREATE TABLE cadastre.searchtable
  (
    searchstring text, --the search string (all lower case), e.g. "zürichstrasse 46, 8610 uster"
    displaytext text NOT NULL, --the display text for the search combobox, e.g. "Zürichstrasse 46, 8610 Uster (address)"
    search_category text, --should have a leading two digit number:, e.g.
                          --"03_parcels", where 03 is the order of the search categories, the number
                          --should be unique across all search tables
    the_geom geometry,    --the actual geometry
    geometry_type text,   --the geometry type as returned by ST_GeometryType(the_geom)
    searchstring_tsvector tsvector, -- be sure to fill this with to_tsvector()
    CONSTRAINT searchtable_pkey PRIMARY KEY (displaytext)
  )
  WITH (
    OIDS=FALSE
  );
  GRANT SELECT ON TABLE cadastre.searchtable TO alle;

  -- Index: cadastre.in_cadastre_searchstring_tsvector_gin

  CREATE INDEX in_cadastre_searchstring_tsvector_gin
    ON cadastre.searchtable
    USING gin
    (searchstring_tsvector);

but i can't execute query

ERROR:  schema "cadastre" does not exist


********** Error **********

ERROR: schema "cadastre" does not exist
SQL state: 3F000

how to create cadastre schema?