What operations and tasks have you solved using database management systems in your projects?

In C# projects, I used database management systems (DBMS) to solve the following tasks:

• Creating, reading, updating, and deleting data (CRUD operations) using ORM, such as Entity Framework.
• Query optimization to improve performance.
• Implementing transactions to ensure data integrity.
• Working with stored procedures and database functions.
• Database schema migrations when changing the data model.

An example of a simple query using Entity Framework:

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

Thus, the DBMS served as the foundation for storing and managing application data.