William Benson
vbacreations at gmail.com
Sun Jan 26 23:10:25 CST 2014
omg or a gr8 time to leave. i should tell you about my new line of T shirts, mugs, bed linens, and underwear and the brand I hope to build Jim. Anyone great opening new markets in apparel sales let me know, I think I am getting out of tech. No joke (but Quite OT, FOR WHICH I PROFUSELY APOLOGIZE) On Jan 27, 2014 12:04 AM, "Jim Lawrence" <accessd at shaw.ca> wrote: > Hi All: > > I must admit that there is a bit of a preamble to but it is all aimed at a > point and, I believe, the future in data management. > > Back a number of years ago, when working for a government branch that > handled data and policy I was asked to retrieve a full set of data > summaries and have them ready to display and/or printout at the request of > the department head. To say the least the data was a mess. It had evolved > for years and each time the data model was improved the data structure was > changed and because it was easier to just make a new table than try and > figure out how to consolidate the information in one table. To add to > data's complexity, government policy continued to change and affect how > data entered into the existing table. When the variation became too extreme > time for a new table. > > All this data resided, in a Oracle database, running on Unix, on one of > the largest HP prolient computers I had ever seen. It was somewhere between > standard server and a mini, full 64 bit, multi-core, a huge extended RAID > with coprocessor running the stacks of drives. 64Bit and multi-core might > not be unusual now but then it was really rare and only available to > governments and big businesses. (A perfect piece of hardware network. ;-)) > > I decided to run the whole interface through a MS Access FE but gather and > calculate the data processing through the big prolient and Oracle. It took > almost two weeks to build the Oracle procedure query. I segregated each > data table set and applied subqueries to manage various policy changes (you > use to be able to only go six level deep with subqueries, on the Oracle of > the day, but I went no more than four levels. After each table set had been > processed and a common data set had been retrieved all the data sets were > UNION ALL together. The finished query was about two hundred lines long. I > had tested each module extensively but now it was time to test the fully > integrated query. > > I pressed the button on my Access form and trotted off for a coffee as I > knew it would probably take a few minutes even on that great machine. As I > was walking to the coffee room, I could over hear everyone saying the > system had stopped. I knew it was a momentary thing so continued on to fix > a coffee. It was momentary; the rest of the morning, momentary...two > hundred lines of code had that huge server thrashing and every resource it > had was being used (the benefits of having full admin rights). > > After that, I broke that big query into individual modules and controlled > its processing via the Access FE. First one module was called, then when > the data was received, that data was sorted and added to the local MDB > table...then in a few minutes, after the server's memory had cleared, the > next module was called and process was repeated until all the modules had > been handled, sorted and appended. This method took less than an hour and > none of the other staff were inconvenienced. > > At that moment, I realized that a system that had multiple small computers > probably could have handled the processing far more effectively. Vertical > processing was maxed out (and was a dead-end technology) and horizontal > processing was the future of data management. NoSQL databases are not the > biggest part of this process, it is the data managers like Hadoop and the > modern languages like Elan and F# and even torrent networks (and dozens > similar technologies), that will make the new data revolution a reality. > > It is a very exciting time to be working in the computer industry. > > Jim > > -- > AccessD mailing list > AccessD at databaseadvisors.com > http://databaseadvisors.com/mailman/listinfo/accessd > Website: http://www.databaseadvisors.com >