NoSQL Database Doesn’t Mean No Schema
Read this: NoSQL Database Doesn’t Mean No Schema It was fun to write. And the code works really nicely.
more ...Database Schema Migration
This covers a lot of ground on the Declarative vs. Procedural question. It explains a lot of the considerations that lead to choosing a procedural schema evolution vs. a declarative schema with an implied change sequence to migrate to each new declared state.
The …
more ...Database Conversion or Schema Migration
I was told a horror story about a bad database schema migration. Let's call the author of the horror story HPL.
HPL related a tale of woeful conversion problems from a mismanaged schema migration.
While I could feel HPL's pain, the reasons given for their pain were wrong. They didn't …
more ...MongoDB and Schema Validation
One part of the MongoDB value proposition is being freed from the
constraints of a database schema.
There's a "baby and bathwater" issue here. While a schema can become a
low-value constraint, we have to be careful about throwing out the
baby when we throw out the bathwater. A schema …
Wrestling with the Python shelve module
While wrestling with Python's shelve module, I ran across ACID. Interesting thoughts. Plus what appears to be the related Tumblr blog: python sweetness. Also interesting. Not sure I can make heavy use of it right now, but it's helpful to see the thought process. I find the subject of shelve …
more ...Automated Code Modernization: Don't Pave the Cowpaths
After talking about some experience with legacy modernization (or migration), I received information from Blue Phoenix about their approach to modernization.
Before talking about modernization, it's important to think about the following issue from two points of view.
Modernization can amount to nothing more than Paving the Cowpaths.
From a …
more ...Mid-Atlantic Design Expo (MADExpo)
I'm looking forward to this. I'll be talking about Python.
- A Python 3.2 tutorial. I did a dry run with the help of the 757 Python group. Made a bunch of changes based on their input.
- A more in-depth presentation on a good architecture of Database Schema Migration scripts …