SDT offers many additional benefits over the data table
services that were included as part of CICS/ESA Version 3. For example:
- Very large reductions in path length can be achieved for remote accesses
because function shipping is avoided for most read and browse requests.
- When cross-memory services are used, the requests are processed by the
AOR, thus freeing the FOR to process other requests. This increases multiprocessor
exploitation.
- Increased security of data is provided because the record information
in shared data tables is stored outside the CICS® region and is not included in CICS system
dumps (either formatted or unformatted).
- For CICS-maintained data tables, all forms of non-update, keyed access (including browse requests
and imprecise-key read requests) are processed by reference to the data table.
- For user-maintained data tables, all forms of non-update, keyed access (including browse requests
and imprecise-key read requests) are supported.
- Any number of files referring to the same source data set that are open
at the same time can retrieve data from the one CICS-maintained data table.
- An enhancement to the XDTRD user exit allows you to skip over a range
of records while loading the data table.

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