There’s been media noise of late around the question of Oracle’s intentions (some would say laziness) concerning keeping it’s acquired MySQL database product relevant within the BD website backend niche. Two topics of conversation arise: the contest between MySQL and newcomer MariaDB in this arena, and the re-positioning going on concerning Oracle’s own flagship database … Continue reading
The DB-engines.com website, which measures how germane almost 200 separate databases are in the current marketplace (including the market of ideas) has had Oracle ranked #1 for many consecutive months now. Their online graphic seems to depict a world in which Oracle is dominant, and by a large margin. What is even more impressive is that the #2-ranked engine is MySQL, also an Oracle product these days, followed by #3-ranked SQL Server from Microsoft. The gap between these three front-runners and the rest of the pack is considerable. Continue…
These gallery images are taken from a series of seven slide shows accompanying the recent Oracle IOUG marketing tour introducing the design intentions for the new 12c database release. The slideshows are viewable as PDFs below; the seven topics are as follows: Continue…
I attended a product demo given by IO Informatics, the semantic health care analytics company, last month. The most intriguing service showcased was their Sentient Server and Knowledge Explorer tool. It can integrate with Oracle 11g (and other databases such as MySQL) as the backend data warehouse supporting typically billions of medical assertions.
GGPLOT2 is a package developed for producing graphics within the R statistical tool. It utilizes a layering metaphor for gradually adding visual details to the desired output. R can support datasets with millions of rows for various aggregation and analysis operations, but it can be slow, unwieldy to code in, and has memory limitations.
The GGPLOT2 package for R, developed by Hadley Wickham, is preferred by many for it’s greater flexibility and range of graphing options. Here’s a tutorial explaining it’s capabilities and here’s the online documentation for the package.
I recently wrote about the R statistics and graphics platform, and introduced it as a way to do further analytics or visualizations for data from Oracle databases. This article will take a look at a graphical idea called tree maps. They are an extension of the more basic visualization technique: heat maps.