Chapter 4 Designing Your Application Layers

Since these notes were prepared, this chapter has been split into two chapters. These notes have not been updated to reflect this change.

Learning objectives:

• Compare and contrast the tiers of the three-tier app architecture vs the seven data science services.
• Answer the two data-storage questions about an app: storage format and storage location.
• Choose the appropriate storage solution for an app.
• Authorize an app to access data.
• Consider database-as-a-service options.