Employee photo table (EMP_PHOTO)

The employee photo table is created with the following CREATE TABLE and ALTER TABLE statements:

CREATE TABLE EMP_PHOTO  
             (EMPNO CHAR(6) NOT NULL, 
              PHOTO_FORMAT VARCHAR(10) NOT NULL, 
              PICTURE BLOB(100K), 
              EMP_ROWID CHAR(40) NOT NULL DEFAULT '', 
              PRIMARY KEY (EMPNO,PHOTO_FORMAT))

ALTER TABLE EMP_PHOTO
            ADD COLUMN DL_PICTURE DATALINK(1000)
                LINKTYPE URL NO LINK CONTROL

ALTER TABLE EMP_PHOTO 
              ADD FOREIGN KEY (EMPNO) 
              REFERENCES EMPLOYEE 
              ON DELETE RESTRICT 

The following index is created:

CREATE UNIQUE INDEX XEMP_PHOTO 
              ON EMP_PHOTO (EMPNO,PHOTO_FORMAT)

The table below shows the content of the columns.