Creational Design Patterns in Modern C++ - MySQL Database Classes

The video tutorial covers the process of adding a MySQL connection and command, using covariant types, and implementing a MySQL recordset clause. It explains how clients can use these clauses in existing applications and the necessary code changes for switching from SQL Server to MySQL. The tutorial also discusses the challenges of manually changing code for different databases and suggests using macros as a solution. The video concludes with a preview of the next lecture, which will demonstrate a macro implementation.

What challenges are associated with manually changing code to use a new database?

How can macros help in working with different databases in an application?