     (distributed security domains)     .    ,     ,          .          .
  
    ,                  .    ,  ,   ,   .       ,               .           .     ,  ,          ,  ,          ,     UNION ALL    . OracleS    (partitioned tables),      (partitional key)   ,          .    ,   .
 OracleS    ,     , - (index-only table).      ,    .       ,      ,  -  ,   .
  -    4.
   
 OracleS     .    ,    Oracle?,   .      Oracle,       .  ,     (parallel propagation)      .              .
  Oracle?       LONG  LONG RAW.  OracleS   LOB ( LOB    LONG)   (,   BFILE ).  LOB  BFILE     .
16
Oracle 8