Yet another example of the underlying fact about data in the real world: it's all relational, not hierarchical. Codd and Date are right. Being able to deal with hierarchies inside a relational engine was the best thing ever done. Try doing it the other way 'round. Yeah, you xml kiddies have been attempting that for about a decade and a half.
I hadn't known that SQLite had done so. What's funny? MySql runs on the Oracle (from before they bought it) engine, InnoDB. While Oracle didn't write InnoDB from the start, they've owned it for a decade, so there's no excuse. If nothing else, Oracle could supply CONNECT BY, which Oracle engines have had since long before IBM/DB2 invented formal CTE and got it into the standard.
He He He.
Despite what the reactionaries assert, the world is not flat nor is it hierarchical. The world is relational. Infinite granularity yields infinite complexity.
Vaccinated ≠ Not Infectious
$536,800,000 MARF™(party like it's 1829)
-- New York Slammers, so far/2024 [GA and The Feds still to come]
-- New York Slammers, so far/2024 [GA and The Feds still to come]
Covid-19 has killed at least 1,123,836 people (as of 20 March 2023, final update)
Scientists aren't vocal enough about science. There are large groups of people who think scientists are all frauds and who don't
believe in science, and they're being cultured by some of our far right-wing politicians, religious leaders and community leaders. -- Drew Weissman/2022
To date, Microsoft is stating that organizations testing In-Memory OLTP have
seen transaction speeds improve by up to 30 times compared to past
performance, with the best performance gains achieved when the business
logic resides in the database and not in the applications.
-- Jonathan Watts/2015 [my emphasis]
-- Jonathan Watts/2015 [my emphasis]
I have had to explain and re-explain and re-explain and re-explain, you know, how relational databases work, what is an eigenvector,
what is dimensionality reduction.
-- Christopher Wylie/2018
... but Flash-based storage has such a different performance profile from rotating media, that I suspect that it will end up having
a large impact on filesystem design. Right now, most filesystems tend to be designed with the latencies of rotating media in mind.
-- Linus Torvalds/2007
-- Chris Date/2009
This week's thought
Investigative reporters are an idiosyncratic breed of journalist. Typically fearless, they are often a source of angina to their editors. Mr. Walsh was no exception. -- Michael S. Rosenwald/2024 [no surprise - I spent a bit of time on Jack Anderson's staff]
In a time of SSD, multi-core/processor, two terabyte memory and Optane App Direct Mode machines, there is no reason not to
build from BCNF data. Time to do what Dr. Codd demonstrated. Technology has finally caught up with the maths.
About
- Robert Young
- Been doing databases, both relational and others, as well as operations research since Hector was a Pup.
Shameless Plug
I know a little something about SQL, DB2 (preferably LUW, z/OS if the money's right), Oracle, SQL Server, Postgres, and database design in general. Mentoring/teaching/consulting on a short term basis, too. And a bit of stat analysis if it's R.
gnuoytr at rcn dot com.
gnuoytr at rcn dot com.
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- Is Life a Cabaret?
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- The Tyranny of Average Cost, part the seventh
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- The Price of Gluttony
- Please, sir, I want some more
- Stupid
- Those Rubes
- The Tyranny of Average Cost, part the sixth
- Angela's (risen from her) Ashes
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