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Glynn Jones
If you need to find ways to improve query database retrieval
performance, consider the following relatively simple methods. Note that
the term "query" is generic in this article unless otherwise stated and
can cover any database retrieval tool whether based on SQL or not.
The first three methods are based on ensuring the query uses the best
processing engine. There are two query processing engines, the
Structured Query Language Query Engine (SQE) and the Classic Query
Engine (CQE). The SQE is the engine that IBM is developing strategically
and improving with each new release of i OS. The CQE is not being
developed by IBM and each new release of i OS since V5R2 has seen more
and more queries that used to be processed by the CQE now processed by
the SQE.
In most cases, queries run by the SQE will perform better than those
run by CQE. While you cannot specifically choose which engine to use
(the system does that for you), the ways in which you construct your
database and retrieve information from it will influence the system's
decision.
To view the rest of this article, click
here
 22 April -- Power Shift at
the City of Manchester Stadium
One-day conference focused on real-life solutions to real-life issues as
well as finding out what's new on the platform and where it and the i
operating system are going. With two keynote sessions and multiple
break-out sessions, the conference will surprise delegates in its
radical views on how to sustain and even grow the i-based Power System
community. Register
here!
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Seamus Quinn
IBM has reshuffled its application development deck as its
Rational toolset goes through yet another set of name-changes.
Just two years ago, Big Blue replaced WebSphere Development Studio
Client (WDSC) and its Advanced equivalent and replaced them with
Rational-branded offerings. Now it's all change once again as Rational
Developer for System i (RDi) is replaced by Rational Developer for Power
Systems (RDp) and Rational Team Concert for i (RTCi) becomes Rational
Team Concert for Power Systems (RTCp). But doesn't a further change in
nomenclature run the risk of confusing existing and potential users
alike?
IBM UK software business group's Rod Little says: "This is not
something we do without careful consideration. In the case of WebSphere
Development Studio Client, there was already considerable confusion
around the use of 'WebSphere' which is the IBM software group brand for
runtime middleware such as WebSphere Application Server. We were
continually having to explain the difference between WebSphere
Application Server and WebSphere Development Studio Client. Rational is
the software group brand for software development tools, so branding as
Rational makes it clear these are development tools."
To view the rest of this article, click
here
Seamus Quinn
The conference season is upon us once again and in the coming
months British Power i fans will be spoilt for choice with events from
the Northern iSeries Users' Group (NiSUG) and Common UK.
As iNEWSWire UK went to press, it was confirmed that NiSUG has
teamed up once again with System iNetwork to put together Power
Shift, a one-day conference which will be held at the City Of
Manchester Stadium on April 22. In the meantime, the Common UK user
group will be holding a one-day event of its own called Back To Basics
at IBM's London South Bank site next week on St Patrick's Day. Common UK
has also issued a call for papers for the Common Europe Congress which
it is hosting this year in Stratford-upon-Avon.
To view the rest of this article, click
here
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