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Answer: Execute a BatchGetItem operation for both tables, utilizing songName/artistName pairs for the 'songs' table and artistName for the 'artists' table.
The correct answer is A. The BatchGetItem operation is designed to return multiple items from one or more DynamoDB tables in a single request, which reduces the number of network calls required. This operation can efficiently retrieve the specific items when you have the primary keys (partition key and sort key, if applicable) of the items you need, minimizing network traffic and improving the performance of your application. Therefore, using BatchGetItem for both tables as described in option A meets the requirements of retrieving multiple songs and artists with minimal network traffic and optimal performance.
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In a web application utilizing Amazon DynamoDB, with 'artists' and 'songs' tables configured with 'artistName' as the partition key in both, and 'songName' additionally as the partition key in the 'songs' table, how can a developer efficiently retrieve multiple songs and artists with minimal network traffic and ensure optimal performance?
A
Execute a BatchGetItem operation for both tables, utilizing songName/artistName pairs for the 'songs' table and artistName for the 'artists' table.
B
Implement a local secondary index on the 'songs' table with artistName as the partition key, then conduct query operations filtering by songName for each artist.
C
Use BatchGetItem for the 'songs' table with songName/artistName pairs and separately for the 'artists' table with artistName.
D
Conduct Scan operations on both tables, applying filters for songName/artistName in the 'songs' table and artistName in the 'artists' table.