Databases

This section presents tutorials about the following database query languages:

• Transact-SQL, the SQL version used with Microsoft SQL Server and some other databases.

It also presents tutorials about the following database systems:

• PostgreSQL, a popular open-source database system
• Microsoft SQL Server and in particular LocalDB. LocalDB is typically used as a local test database when developing database applications.

And it also presents tutorials about frameworks that can be used to work with databases such as:

• ADO.NET
• The Entity Framework for .NET applications.