pickaxe: An SQL-Based DSL Web Scraper/Screen Scraper — A C# / Mono based Web scraper that takes a novel approach of letting you scrape the Web by building special SQL queries. There are lots of examples to look at.
The Guts n’ Glory of Database Internals: B+Tree — “The absolute worst thing about B+Trees is their name. It is like someone maliciously considered all the possible names and then selected the most confusing one.”
PostgreSQL Exercises — If you’re looking for a way to practice your SQL skills some PG Exercises offers some good example data and exercises to hone your skills.
Is Spark Overhyped? — “The Apache Spark phenomena has taken the big data world by storm. But can the technology actually deliver according to the tremendous hype that is accompanying it, or has it been oversold?”
