Professional-Data-Engineer Exam Question 171

Suppose you have a table that includes a nested column called "city" inside a column called
"person", but when you try to submit the following query in BigQuery, it gives you an error.
SELECT person FROM `project1.example.table1` WHERE city = "London"
How would you correct the error?
  • Professional-Data-Engineer Exam Question 172

    You have an Oracle database deployed in a VM as part of a Virtual Private Cloud (VPC) network.
    You want to replicate and continuously synchronize 50 tables to BigQuery. You want to minimize the need to manage infrastructure. What should you do?
  • Professional-Data-Engineer Exam Question 173

    If you're running a performance test that depends upon Cloud Bigtable, all the choices except one below are recommended steps. Which is NOT a recommended step to follow?
  • Professional-Data-Engineer Exam Question 174

    You work for an economic consulting firm that helps companies identify economic trends as they happen. As part of your analysis, you use Google BigQuery to correlate customer data with the average prices of the 100 most common goods sold, including bread, gasoline, milk, and others.
    The average prices of these goods are updated every 30 minutes. You want to make sure this data stays up to date so you can combine it with other data in BigQuery as cheaply as possible.
    What should you do?
  • Professional-Data-Engineer Exam Question 175

    You have a Cloud SQL for PostgreSQL instance in Region' with one read replica in Region2 and another read replica in Region3. An unexpected event in Region' requires that you perform disaster recovery by promoting a read replica in Region2. You need to ensure that your application has the same database capacity available before you switch over the connections.
    What should you do?