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Question 187 - Professional Data Engineer discussion

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You have historical data covering the last three years in BigQuery and a data pipeline that delivers new data to BigQuery daily. You have noticed that when the Data Science team runs a query filtered on a date column and limited to 30ñ90 days of data, the query scans the entire table. You also noticed that your bill is increasing more quickly than you expected. You want to resolve the issue as cost-effectively as possible while maintaining the ability to conduct SQL queries.

What should you do?

A.
Re-create the tables using DDL. Partition the tables by a column containing a TIMESTAMP or DATE Type.
Answers
A.
Re-create the tables using DDL. Partition the tables by a column containing a TIMESTAMP or DATE Type.
B.
Recommend that the Data Science team export the table to a CSV file on Cloud Storage and use Cloud Datalab to explore the data by reading the files directly.
Answers
B.
Recommend that the Data Science team export the table to a CSV file on Cloud Storage and use Cloud Datalab to explore the data by reading the files directly.
C.
Modify your pipeline to maintain the last 30ñ90 days of data in one table and the longer history in a different table to minimize full table scans over the entire history.
Answers
C.
Modify your pipeline to maintain the last 30ñ90 days of data in one table and the longer history in a different table to minimize full table scans over the entire history.
D.
Write an Apache Beam pipeline that creates a BigQuery table per day. Recommend that the Data Science team use wildcards on the table name suffixes to select the data they need.
Answers
D.
Write an Apache Beam pipeline that creates a BigQuery table per day. Recommend that the Data Science team use wildcards on the table name suffixes to select the data they need.
Suggested answer: C
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asked 18/09/2024
lakshmi govindu
43 questions
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