	
FILEISOPEN	,    BFILE
FILEOPEN	  BFILE
ERASE	     LOB (    ,   LOB  NULL)
GETLENGTH            LOB (   ,     LOB)
INSTR	  n-     LOB
READ	  LOB   
SUBSTR	  LOB     
TRIM	   LOB        LOB
WRITE	      ____________LOB   _________________
LOB       .      (locator),      .    ,      NULL.     LOB-  BFILE-,   ,   EMPTY_BLOB   EMPTY_CLOB.  ,         LOB-     .  LOB-     ,       . ( ,   LOB-   .)
     .  LOB-            (,     BFILE,   ),          ,       .   ,       ,     ,          .
74
OraclcS