Most everyone knows about Darwin, and what they think they know is that Charles Darwin is the discoverer of Evolution through Natural Selection. And for sure, he did discover this. But the amazing thing is....he wasn't the only one.
Recently I got involved in a question on Temporal Validity Periods together with Chris Saxon, one of the askTom-answer team.
The question was along the lines of: "What if I have a single start date but two possible end dates. One of the end dates is filled automatically by a background proces (could be a job) while the other one is to signal that the end date is set manually by the user. Could you use Temporal Validity to get the correct rows?"
I'm back after one of the best ocean voyages ever - the OUGN Spring Conference 2016. That conference is arranged by Oracle User Group Norway and is two days from Thursday before lunch-time to Saturday before lunch-time. The special thing is, that it all happens on board a cruise ship that uses 20 hours to sail from Oslo, Norway to Kiel, Germany - stays in Kiel 4 hours - then 20 hours to sail back.
Right smack in the middle of the busiest time of the year for the business (this time of year we sell fireworks for New Year) I have opportunity to reflect a bit on the upcoming year and what 2016 will bring of challenges and joys.
Of course things will happen in the Oracle world that'll indirectly influence my year, as always. Not always possible to predict here near the start of the year, but most likely at least there'll be a release of version 12.2 of the database, with the usual fun of working with the new features of SQL and PL/SQL.
It was quite annoying to find that TurboTax couldn’t send me a text message to confirm my order of a second state. However, I made the mistake of clicking the “Confirm my account a different way (takes longer)” radio button to get to their web page.
After I got two-step verification enabled on their web site, now it’s impossible to order the second state software. It appears that once you click that button, the software writes it to a file and never prompts you for text, email, or other verification. That seems like a bug to me, what do you think?
Two years ago we have ventured into mathematical foundation of relational theory. From algebraic geometry perspective relations were viewed as Finite Varieties. In the followup exposition we were able to describe functional dependencies via explicit analytic formulas and provide intuitive interpretation of Heath’s theorem.
During the holidays, I check salaries for my students and the IT industry overall. I’m never surprised by the reality, after all salaries pay for return on skills and effort. Here’s my annual look, which some may find unkind but reality is seldom kind.
Before looking at IT salaries, it seems like a good opportunity to first look at the overall job market for Millennials in the United States. AOL provides a great graphic of the median income for Millennials (those born between 1981 and 1997), which is $18,000 to $43,000 a year:
I posted earlier in the year how to configure a Fedora instance to test PHP code on a local VM. However, I’ve got a few questions on how to find those posts. Here’s a consolidation with links on those steps:
I got a question recently from Morten Braten whether my FIFO analytic techniques could be helpful for calculating the value of fuel consumption for cargo vessels. It turned out not to be quite the same, but similar. Analytic functions definitely could help. I'll show how in two parts. First this blog post will calculate the fuel consumption in quantity, then part two will calculate the value by FIFO.