In this lab challenge, you will need to prove your knowledge of Google Cloud Firestore in Datastore mode by creating a Firestore database, and working with Firestore entities. The objectives you will need to achieve represent essential skills that a Google Professional Data Engineer needs to have. You'll be given a desired end state and be required to reach it using your knowledge of the Google Cloud Firestore in Datastore mode service. This lab challenge simulates building a solution in a real-world scenario. As with any real-world scenario, this lab will not guide you through the steps needed to complete it.