Friday, November 27, 2015

Science, Data Science and Database Science

My November post @All Analytics.

Einstein famously advised that everything should be as simple as possible, but not simpler. In a recent online exchange the relational data model (RDM) -- sound and comprehensible science -- was dismissed as “4th grade mathematics”, while a-theoretical complexity is promoted as science. The IT industry practices fail Einstein both ways.An increasing gap between computational complexity and intellectual simplicity is not conducive to true science and, as Hawking has warned, it is a self-feeding, dangerous proposition. 

Read it all. (And please comment there, not here)










Sunday, November 22, 2015

Weekly Update

Housekeeping: Added If a table with a SK has a NK does it violate 3NF? to LINKS page.

1. Quote of the Week

One other intriguing benefit of NoSQL that I started to unwitting benefit from recently is the ability to push data scheme concerns entirely to the application layer. In this scenario, the applications use a NoSQL database predominantly as a storage service, lightly structured by a few indexed key fields. The object structured data document within the payload becomes transparent to the database. The applications then assume the role of enforcing and understanding the data scheme.

This approach allows the application architect to encode the data structures and meaning directly in the code that creates and consumes the data. So data structure changes required for functional updates can be implemented, tested, and deployed in the application code base with no updates to the database layer at all. (Of course, a conversion of existing NoSQL data documents may be required in situations.)

In this NoSQL approach, the removed translation of object data scheme to a relational structure and, and then back to an object structure again is a very welcome relief as well. --use-the-index-luke.com

Sunday, November 15, 2015

Moving in Circles: SQL for NoSQL

We've been there, done that.  

In Coming Full Circle: Why SQL now powers the NoSQL Craze Ryan Betts, CTO at VoltDB, argues that NoSQL products should adopt SQL for queries. I don't know about you, but to me it looks like a contradiction. Let me make it clear that my intention here is neither to defend SQL, nor to criticize it--I sure have done enough of that during the years--but rather strictly debunk the notion that its use with NoSQL systems is a good idea.

Sunday, November 8, 2015

Weekly Update

Housekeeping: Added
to LINKS page.
RAQUEL
to SOFTWARE section on Home page.

1. Quote of the Week

After attending NoSQL conference I am really hoping that companies think through this 'big data' implementation! No one there was interested in Data model ... and said so ... forget the data model ... even 'standards' were looked at 'its 'too early' for this new technology ... and no one could tell us anything about 'meta-data'...!!!!! --LinkedIn.com