Do you have experience working with libraries for extracting data from databases?

Yes, in C# libraries for working with databases are often used, such as ADO.NET, Entity Framework, Dapper, and others.

• ADO.NET — low-level access to data via SQL queries and commands.
• Entity Framework — ORM that allows working with the database through objects and LINQ queries.
• Dapper — a lightweight ORM that provides fast mapping of SQL query results to objects.

Example of using Entity Framework to retrieve data:

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

Here, we get a list of active users from the database using a LINQ query to the database context.