Creational Design Patterns in Modern C++ - SQL Server Database Classes

The video tutorial covers the process of adding clauses for an SQL Server database, focusing on naming conventions and implementing the factory method design pattern. It simulates database operations using vectors and iterators, demonstrating how to create and use SQL connection and command objects. The tutorial also explains the concept of covariant return types in object-oriented programming, highlighting their advantages in avoiding downcasting.

What steps are involved in creating a command object after opening the connection?

What should be done with the pointers after accessing all the rows?

What is the significance of using a covariant type in the context of SQL record sets?