Developing Solutions for Microsoft Azure (AZ-204) Practice Exam

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For writing Graph-based applications using the Gremlin API, which service is ideal?

Azure SQL Database
Azure Cosmos DB
Azure Databricks
Azure Database for MySQL

The correct answer is: Azure Cosmos DB

The Gremlin API is expressly designed for working with graph-based data and is a part of Azure Cosmos DB. This service offers native support for graph databases, allowing developers to utilize Gremlin, a traversal language for graph data. Azure Cosmos DB provides features such as global distribution, comprehensive service-level agreements (SLAs), and high availability, making it an excellent choice for applications that require flexible and scalable database solutions tailored for graph structures. When utilizing Azure Cosmos DB with the Gremlin API, developers can efficiently store and query entities and relationships within a graph format. This capability enables complex data relationships to be navigated in a straightforward manner, which is essential for graph-based applications like recommendation engines, social networks, and other scenarios requiring interconnected data. Other options such as Azure SQL Database, Azure Databricks, and Azure Database for MySQL, while powerful in their own right, do not natively provide graph-based functionalities. Azure SQL Database is primarily relational, Azure Databricks focuses on Apache Spark analytics, and Azure Database for MySQL is tailored for traditional MySQL workloads. None of these services support the Gremlin API for graph traversal and storage in the way Azure Cosmos DB does.