AWS Certified Developer - Associate
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You have a dataset stored in Amazon S3 in CSV format. Your goal is to extract data for a specific month and to retrieve only 3 out of the 10 available columns. Given the need to minimize both compute and network costs, which AWS service or feature should you use to achieve this?
You have a dataset stored in Amazon S3 in CSV format. Your goal is to extract data for a specific month and to retrieve only 3 out of the 10 available columns. Given the need to minimize both compute and network costs, which AWS service or feature should you use to achieve this?
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Explanation:
S3 Select
S3 Select enables applications to retrieve only a subset of data from an object by using simple SQL expressions. By using S3 Select to retrieve only the data needed by your application, you can achieve drastic performance increases in many cases you can get as much as a 400% improvement.