Have you had experience working with database management systems?

Yes, I have experience working with database management systems (DBMS) such as Microsoft SQL Server, MySQL, and PostgreSQL. In C#, I used ADO.NET and Entity Framework to interact with the database: executing queries, updating data, and managing transactions.

Example of a simple query using Entity Framework:

using(var context = new MyDbContext())
{
    var users = context.Users.Where(u => u.IsActive).ToList();
}

This allows for convenient object-level data manipulation without worrying about SQL query details.