ZOIS Limited

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, Encina, 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, expainations 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.

OLTP

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 (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 more of historical interest).
• Top End (now only of historical interest).
• Tuxedo.

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.

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.

Miscellaneous

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 to 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).

Cockermouth

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.

Finally ...

Credit where Credit is Due. Please do send Feedback. The Web being the dynamic animal it is there will from time to time be broken links. Please do report them.

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.

Legalise

ZOIS Limited is registered in England, Number 2197775. The registered office is 22-26 Nottingham Road, Stapleford, Nottingham NG9 8AA.

$Date: 2008/07/04 16:23:46 $