Description of the illustration alter_view.eps

ALTER VIEW [ IF EXISTS ][ schema. ] view
  { ADD out_of_line_constraint
  | MODIFY { CONSTRAINT constraint { RELY | NORELY } 
           | ( column annotations_clause )[,column annotations_clause ]
           }
  | DROP { CONSTRAINT constraint
         | PRIMARY KEY
         | UNIQUE (column [, column ]...)
         }
  | { COMPILE | RECOMPILE }
  | { READ ONLY | READ WRITE }
  | { EDITIONABLE | NONEDITIONABLE }
  | annotations_clause
  }