Overview: SQL remains a core skill for data management across industries in 2026Free courses build fundamentals while paid ...

Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier. Due to popular demand, we’re ...

This post is one of a series that introduces the fundamentals of NOSQL databases, and their role in Big Data Analytics. What is a search engine database? Search engines are database management systems ...

I've been working with SQL Server for over 20 years now, Generally, I limit my tools to the things I might expect to find in a given client environment. My toolbox typically includes the tools that ...

SQL databases have constraints on data types and consistency. NoSQL does away with them for the sake of speed, flexibility, and scale. One of the most fundamental choices to make when developing an ...