SQL

Structured Query Language: a language for accessing and managing data in a Relational Database Management System (RDBMS). The first database I ever used was Microsoft Access, which I used up until 2003 when I started learning PHP, where MySQL is the standard compliment.

Over many years and many projects, I have learned how to efficiently manage data, using techniques such as basic CRUD, joins, aggregate queries, sub-queries, unions, and analysing/optimising execution plans. Whilst my preferred RDBMS is MySQL, I have plenty of experience using Microsoft SQL server, and have used No-SQL database systems such as CosmosDB.