If you work with data — or want to — Microsoft SQL Server is a skill worth having in your back pocket. The 2025 Total Microsoft SQL Server Bundle gives you five courses and 17 hours of practical, real ...

Follow this step-by-step guide to install PostgreSQL, load data, connect to a database, and execute SQL queries including table joins PostgreSQL is an open-source, object-relational (also called ...

PL/SQL stands for Procedural Language extension of SQL. PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation in the early ...

Microsoft's SQL Server Migration Assistant lets you move your data and schema to different SQL Servers. Here's what you need to know about the tool. Image: Dilok/Adobe Stock The Microsoft SQL Server ...