,    ,          .
          , , ,  Oracle      .         ,        .        ,  ( )        ,    (,    )  ,   .   Oracle , ,  :
SELECT first_name, last_name, post_code
FROM ... WHERE last_name = 'STEVENSON';
   ,       ,      ,      .      :
SELECT first__name, last_name, post_code
FROM ... WHERE last_name_upper = 'STEVENSON';
 ,           ,     ,  ,      ,   .
Oracle         -,    ,        .  ,            ,           "  ".     ,  , ,  :
CREATE TABLE documents
( doc_id NUMBER NOT NULL PRIMARY KEY , summary VARCHAR2(2000) NOT NULL --       , held_by VARCHAR2(20)   NOT NULL FOREIGN KEY PREFERENCES keepers
) ;
   ,       ,       .   ,      
84	Oracle 8