Answers

1. No, you can have as many layers as you need and name and organize them as you want.
2. No, both have their place, their pros, and their cons.
3. Yes. A DbContext is an implementation of the Unit of Work pattern. DbSet<T> is an implementation of the Repository pattern.
4. No, you can query any system in any way you want. For example, you could use ADO.NET to query a relational database manually and create the objects using data from a DataReader, track changes using a DataSet, or do anything else that fits your needs. Nonetheless, ORMs can be very convenient.
5. Yes. A layer can never access outward layers, only inward ones.

Learn more on Discord

To join the Discord community for this book – where you can share feedback, ask questions to the author, and learn about new releases – follow the QR code below:

https://packt.link/ArchitectingASPNETCoreApps3e