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Introduction to SQL

Introduction to SQL

Learn about SQL and how it’s used to manipulate and access databases.

We'll cover the following...

Overview of SQL

SQL (Structured Query Language) is a language used to manage data in relational database systems. To be good at working with SQL, we should have a proper understanding of the kind of relationships that exist between the entities. This helps us write more efficient, maintainable, and scalable code.

These relationships can be:

  • one-to-many
  • many-to-many
  • one-to-one
  • many-to-one

SQL is one of the most ...