What is TSQ and TDQ.what is the the difference?
when you for tsq and when you go for tdq?
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Answer Posted / lu
first of all, you need to read CICS book...read :
Q What are the differences between TSQ and a TDQ ?
A (1) In Temporary Storage Queues Data (TS) is
read randomly,
(2) in Transient Data Queues data (td) must be read
sequentially.
(2) In a TSQ data can be read any number of times as it
remains in the queue until the entire Queue is deleted.
TDQ data item can be read once only. To reuse the TDQ it
must be closed and reopened
(3) Data can be changed in TSQ, but not in TDQ.
(4) TSQ can be written to Auxiliary or Main Storage, while
TDQ is written to Disk. Temporary storage is a holding
place, while Transient data is always associated with
destination.
(5) TSQ name is defined dynamically, while a TDQ name need
to be defined in the DCT. Note: An application uses TSQ 's
to pass info' from task to task, while a TDQ to accumulate
records before processing or send data for external use,
such as a print operation or other.
Q What are Extra partition & Intra partition TDQs ?
A Extra-partition TDQ's are datasets used for
communication between CICS and other CICS/Batch regions.
Extra-partition TDQ doesn't have to be a disk file, it can
reside on any device that's a valid QSAM/VSAM. The DCT
entry contains the destination-Id, type of TDQ,
Destination, Trigger level if needed.
Intra-partition TDQ's are queues for communication within
CICS region. CICS stores the Intra-partition TDQ in a
dataset 'DFHNTRA' on the Disk.
---------------------
i hope that you have an idea....
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