CREATE STORAGE AREA -+-> <area-name> -+-+-------------------------++
                       +-> RDB$SYSTEM --+ +-> FILENAME <file-spec> -+|
       +-------------------------------------------------------------+
       ++------------------------------+-+->
        +-+-+-> storage-area-params-1 -+ |
          | +-> storage-area-params-2 -+ |
          +--------------- <-------------+

  storage-area-params-1 =

  --+-> ALLOCATION IS ---> <number-pages> --> PAGES -----+->
    +-> CACHE USING <row-cache-name> --------------------+
    +-> NO ROW CACHE ------------------------------------+
    +-> extent-params -----------------------------------+
    +-> INTERVAL IS --> <number-data-pages> -------------+
    +-> LOCKING IS --+-> ROW --+--> LEVEL ---------------+
    |                +-> PAGE -+                         |
    +-> PAGE FORMAT IS +-> UNIFORM -+--------------------+
    |                  +-> MIXED ---+                    |
    +-> PAGE SIZE IS ----> <page-blocks> --> BLOCKS -----+

  extent-params =

  --+-> EXTENT IS -+-> ENABLED -------------------++-->
    |              +-> DISABLED ------------------+|
    |              +-> <extent-pages> --> PAGES --+|
    |              +-> (extension-options) -------+|
    +---------------------<------------------------+

  extension-options =

  ---> MINIMUM OF <min-pages> PAGES, --+
  +------------------------------------+
  +--> MAXIMUM OF <max-pages> PAGES, --+
  +------------------------------------+
  +--> PERCENT GROWTH IS <growth> ------->

  storage-area-params-2 =

  --+-> CHECKSUM CALCULATION IS -----------+--+-> ENABLED --+-+->
    +-> SNAPSHOT CHECKSUM CALCULATION IS --+  +-> DISABLED -+ |
    +-> SNAPSHOT ALLOCATION IS --> <snp-pages> ----> PAGES ---+
    +-> SNAPSHOT EXTENT IS -+-> <extent-pages> ----> PAGES --++
    |                       +-> (extension-options) ---------+|
    +-> SNAPSHOT FILENAME --> <file-spec> --------------------+
    +-> THRESHOLDS ARE ( <val1> +-----------------------+> ) -+
    |                           +> ,<val2> -+----------++     |
    |                                       +> ,<val3> +      |
    +------------------------------<--------------------------+