May 2024
Intermediate to advanced
325 pages
12h 2m
English
Content preview from Distributed Database Systems, 1st Edition by Chhanda Ray
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Distributed Database Systems
14.2.2 Distributed Query Processing in SDD-1
In SDD-1, the query processing involves two steps, namely, the compilation of the transaction
that converts the transaction into a parallel program, and the execution of it. The key part of the
compilation is access planning in which an optimization procedure is determined that minimizes
the object program’s inter-site communication needs while maximizing its parallelism.
Access planning
The simplest way to execute a distributed transaction is to move all of its read set to a single DM and
then execute the transaction at that DM. This approach is very simple, but ...
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