ZOIS Limited is a very small computer
consultancy specialising in On-Line Transaction Processing (OLTP) on open systems and the World
Wide Web. That practically means consultancy in CICS, Tuxedo and
Enterprise Java Beans (EJB).
In order to help people understand more about these topics and distributed computing in general we've written number of small papers, explanations and technical notes, follow the links on the sections below.
If you have guessed "www.zois.com" and are surprised by this OLTP stuff, look to our other "zois" sites page and see if what you want is there.
Potential plagiarists are asked to note the source of the material
you might find here and are reminded of the Bern Convention. To that
silently asked question, no, you don't need to cover everything with
© Copyright symbols.
|Another transaction completed|
Here's some small papers we've prepared on the subject ...
- OLTP made simple for non-cognoscente like Brain Surgeons and Rocket Scientists.
- OLTP, here's an executive summary.
- OLTP is needed for big computers.
- OLTP is needed for reliability.
- OLTP is all about managing Transactions.
- OLTP is about scaling.
Transaction Processing Monitors
Transaction Processing Monitors (TPM) are the computer systems that do OLTP. Here are some reviews of the popular ones that we've been involved in (with some sample source code). The order is alphabetic, we've tried to be vendor neutral in true open style.
- CICS (also known as TXSeries on some systems).
- Encina (now only of historical interest).
- Top End (also only of historical interest).
Object Oriented Transactions and the Web
Driven by extending commerce to the World Wide Web, things are moving toward an Object Oriented approach built around the programming language Java. Here's some papers on this too ...
- How do WWW Servers fit in.
- Object Transactions Services (OTS).
- Enterprise Java Beans (EJB).
- A critique of EJBs.
- A quick look at XML.
The Unofficial Universal Jobmatch Archive
As a pro-bono service, we're scraping the UK Government's Universal
Jobmatch service. The original, Unofficial National Jobcentre Plus
Mirror, was work done in an indignant response to the closure of the
local Jobcentre Plus office, here in Cockermouth. It has been expanded
nationally and now the whole of the UK (sadly excluding Northern
Ireland). Posting details are scraped off various web-sites and stored
as a set of files that can be downloaded from our ftp site, as well as some
other mechanisms. Elsewhere, there's more on
this and also an explanation of earlier efforts.
Starting from mid-June 2002 we thought it would be good to document
and publish various bits of work as they are done. Folk doing similar
work could find these documents using web-search engines and hopefully
then find them useful. The names of these `Technical Notes' reflect the
time they were written and they are mostly concerned with OLTP. In the
absence of proper peer-review, and as with other parts of the web-site,
we invite Feedback.
A place for:
- Some information on what is going on in the groves of Academia on OLTP.
- Informed conjecture on what Microsoft is doing in the OLTP arena.
- Further sources of information, largely books, but also ...
- A largely unadorned set of web browser book marks with OLTP related links including those TPM which we do not specialise in.
Impressed by the efforts of Mr. DNS, we hope to provide a similar
service to the Open OLTP community. Go ahead and ask Mr. OLTP. Remember
that he's quite busy earning an honest crust, so questions might not be
answered right away. Also some of the questions you may ask, we
respectfully point out, may be better asked of your OLTP provider's
support organization. Hopefully, you'll find Mr. OLTP's answers
informative (if not entertaining).
ZOIS is based in the quaintly named town of
Cockermouth. Although a quick search on Cockermouth produces a large
number of `hits', all of these appear to be of a tawdry commercial
variety, directories touting for business, that sort of thing. There's
very little information on the town itself. Hopefully our meager
efforts will go some way in correcting that.
You may find that these pages are stuck in a frame. You may want to
read this without the benefit of stuff that may have been dumped around
it or even bookmark the page (rather than the frame). In such
circumstances you will find a handy link at the bottom of each page
entitled "Break Frame". Using it should enable the page you want to
emerge from its surrounding frames and be displayed on its own.
ZOIS Limited is registered in England, Number 2197775. The registered office is 14a, Main St, Cockermouth, CA13 9LQ.