create table check in

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CREATE TABLE ADM_HISTORY (   SEQ       NUMBER NOT NULL,   USER_ID     VARCHAR2(20)      NOT NULL,   CUD       VARCHAR2(1) CHECK( CUD IN('C', 'U', 'D')) NOT NULL,   TITLE     VARCHAR2(2000) NOT NULL,   URL       VARCHAR2(500) NULL,   REGDATE   DATE DEFAULT SYSDATE,   PRIMARY KEY ( SEQ ),   FOREIGN KEY ( USER_ID ) REFERENCES ADM_USERS ( USER_ID ) );