AWS Certified Solutions Architect – Professional — Question 798

In DynamoDB, a projection is__________.

Answer options

• A. systematic transformation of the latitudes and longitudes of the locations inside your table
• B. importing data from your file to a table
• C. exporting data from a table to your file
• D. the set of attributes that is copied from a table into a secondary index

Correct answer: D

Explanation

In Amazon DynamoDB, a projection defines the specific attributes that are copied from the base table into a secondary index. This allows queries on the index to retrieve projected attributes quickly without needing to perform a fetch operation against the main table. The other choices describe geographic mapping, importing, and exporting, which are unrelated to DynamoDB projections.