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Difficulty: MediumAzure Database Services (Relational, Non-Relational, and Cosmos DB)

A developer is evaluating database services in Microsoft Azure for a new application. Is the following statement true? Azure Cosmos DB is classified as a relational database service because its default API uses SQL query syntax to retrieve semi-structured data?

Answer: Answer

Answer

False
The statement is false because Azure Cosmos DB is a non-relational (NoSQL) database service. It is schema-agnostic and designed to handle unstructured or semi-structured data. The use of SQL-like query syntax in its default API does not impose relational constraints or schemas on the database.

Step-by-Step Solution

1
Determine the database classification of Azure Cosmos DB.
Azure Cosmos DB is a non-relational (NoSQL) database service.
It is designed to scale horizontally and handle semi-structured data without a fixed schema.
2
Analyze how the query interface relates to the database type.
The SQL query interface provides a familiar syntax for developers but does not change the database into a relational database.
A relational database enforces constraints such as tables, relations, and foreign keys, which Azure Cosmos DB does not enforce.

Key Concept

Azure Cosmos DB is a non-relational (NoSQL) database service, even though its default API uses SQL syntax for querying.
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Topics

Azure Database Services (Relational, Non-Relational, and Cosmos DB)

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