AWS Certified Developer Associate DVA-C02 Practice Question

The developer should employ a composite primary key with two elements: a partition element that represents the individual customer, and a sort element that aligns with the chronological aspect of the interactions. This approach enables the table to isolate data per customer while allowing sorted and range-based retrieval within the confines of each customer's data set. A design with a singular identifier disregards the query needs by customer and date. A primary key based solely on the customer element would fail to account for multiple interactions and lead to poor distribution of data, whereas focusing on chronological elements alone could lead to similarly skewed data distribution due to concurrent interactions across customers.