text: CREATE TABLE USR
    (
      ID_USR                  NUMBER NOT NULL ,
      USR_EMAIL               VARCHAR2 (100) NOT NULL ,
      USR_PWD                 VARCHAR2 (500) NOT NULL ,
      USR_FIRSTNAME           VARCHAR2 (100) NOT NULL ,
      USR_LASTNAME            VARCHAR2 (100) NOT NULL ,
      TWITTER_NAME            VARCHAR2 (100) ,
      TWITTER_ID              NUMBER ,
      TWITTER_PROFILE_PIC_URL VARCHAR2 (200) ,
      SHOW_ACC_PUBLIC         NUMBER (3) DEFAULT 1 NOT NULL ,
      ACC_ACTIVE              NUMBER (3) DEFAULT 0 NOT NULL ,
      USR_HIGHSCORE           NUMBER
    ) ;
  CREATE UNIQUE INDEX UK_USR_USR_EMAIL ON USR
    (
      USR_EMAIL ASC
    )
    ;
  CREATE UNIQUE INDEX UK_USR_TWITTER_NAME ON USR
    (
      TWITTER_NAME ASC
    )
    ;
    CREATE INDEX I_USR_SHOW_ACC_PUBLIC ON USR
      ( SHOW_ACC_PUBLIC ASC
      ) ;
    ALTER TABLE USR ADD CONSTRAINT PK_USR PRIMARY KEY ( ID_USR ) ;
  