[Angularfire 2] Object observables-how to Read Objects from a Firebase Database?

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In this lesson we is going to learn what do I angularfire 2 to query objects, and read them from the Firebase realtime D Atabase.

    Const course$: firebaseobjectobservable<any> = af.database. Object ('courses/-kt0lsbuhhzgr5f4v7ov');    Course$.subscribe ((c)= {      console.log ("C"null 2 ))    });

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[Angularfire 2] Object observables-how to Read Objects from a Firebase Database?

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