[Solved] Given this code snippet using Firestore on GCP:doc_ref = firestore_client.collection('users').document('user123') doc_ref.set({'name': 'Alice', 'age': 30}) user = doc_ref.get().... | GCP

GCP - Cloud Firestore and Bigtable

Given this code snippet using Firestore on GCP:

doc_ref = firestore_client.collection('users').document('user123')
doc_ref.set({'name': 'Alice', 'age': 30})
user = doc_ref.get().to_dict()
print(user['name'])

What will be printed?

Auser123

BAlice

C30

DNone

Step-by-Step Solution

Solution:

Step 1: Understand Firestore document creation
The code sets a document with fields 'name' and 'age' under 'users/user123'.
Step 2: Retrieve and print the 'name' field
The get() call fetches the document, and user['name'] accesses the 'name' value, which is 'Alice'.
Final Answer:
Alice -> Option B
Quick Check:
Print user['name'] = Alice [OK]

Quick Trick: Set then get document fields to print values [OK]

Common Mistakes:

Printing document ID instead of field
Confusing field names
Assuming None if document exists

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More GCP Quizzes

Given this code snippet using Firestore on GCP:

Step 1: Understand Firestore document creation

Step 2: Retrieve and print the 'name' field

Final Answer:

Quick Check:

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