Microsoft Azure Data Fundamentals DP-900 Practice Question
An e-commerce startup plans to build a shopping-cart microservice that needs to store and query JSON-based product and customer documents. The data must be automatically replicated to several Azure regions so that shoppers worldwide experience single-digit millisecond read latency. Which Azure data store should you recommend?
Azure Blob Storage using read-access geo-redundant storage (RA-GRS)
Azure Cosmos DB is designed for globally distributed, low-latency applications that work with schema-less data such as JSON documents. It can automatically replicate data to any Azure region and offers single-digit millisecond read and write latencies backed by service-level agreements.
Azure SQL Database with active geo-replication can copy data to other regions, but its latency is typically higher and the relational schema is less suited to flexible JSON documents. Azure Blob Storage and Azure Data Lake Storage Gen2 provide scalable object storage but do not deliver document querying capabilities or guaranteed millisecond latency. Therefore, Azure Cosmos DB is the best fit for the described scenario.
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Microsoft Azure Data Fundamentals DP-900
Describe considerations for working with non-relational data on Azure
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