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Data can only be exported in JSON or Avro format.ĭ. The only supported export destination is Google Cloud Storage.Ĭ. To export more than 1 GB of data, you need to put a wildcard in the destination filename.ī. Which of these statements about exporting data from BigQuery is false?Ī. Denormalization increases the amount of data processed and the amount of storage required because it creates redundant data. Denormalization also makes queries simpler because you do not have to use JOIN clauses. Reduces the amount of data processed, increases query speed.ĭenormalization increases query speed for tables with billions of rows because BigQuery’s performance degrades when doing JOINs on large tables, but with a denormalized data structure, you don’t have to use JOINs, since all of the data has been combined into one table. Reduces the amount of storage required, increases query speed.ĭ. Increases query speed, makes queries simpler.Ĭ. Reduces the amount of data processed, reduces the amount of storage required.ī. What are two of the benefits of using denormalized data structures in BigQuery?Ī. To access the person.city column, you need to “UNNEST(person)” and JOIN it to table1 using a comma. Add “, UNNEST(city)” before the WHERE clause. Add “, UNNEST(person)” before the WHERE clause.ĭ. SELECT person FROM `1` WHERE city = “London”Ī. 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: New Professional Cloud Architect dumps PDF: New Professional Data Engineer dumps PDF: Keywords: Professional Data Engineer exam dumps, Professional Data Engineer exam questions, Professional Data Engineer VCE dumps, Professional Data Engineer PDF dumps, Professional Data Engineer practice tests, Professional Data Engineer study guide, Professional Data Engineer braindumps, Google Cloud Certifications: Professional Data Engineer Exam New Updated Professional Data Engineer Exam Questions from PassLeader Professional Data Engineer PDF dumps! Welcome to download the newest PassLeader Professional Data Engineer VCE dumps: (80 Q&As)