DP-900 Native JSON support Practice Question
Which TWO Azure services can be used to host a relational database that requires native support for JSON data and high availability with automatic failover?
⚠ Common exam trap
Candidates often choose Azure Database for PostgreSQL because it supports JSON, but the exam expects the two Azure SQL services (Azure SQL Database and Azure SQL Managed Instance) as the primary relational databases with native JSON and automatic failover.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure SQL Database
Azure SQL Database and Azure SQL Managed Instance both support native JSON functions (e.g., JSON_VALUE, JSON_QUERY) and provide high availability with automatic failover through built-in mechanisms. Azure Database for PostgreSQL supports JSON via the jsonb data type, but the exam emphasizes Azure SQL services for relational JSON capabilities. Azure Cosmos DB is NoSQL, and Azure Database for MariaDB lacks native JSON support.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Azure SQL Database
Why this is correct
Correct: Azure SQL Database provides native JSON functions and automatic failover as part of its high-availability architecture.
- ✗
Azure Database for MariaDB
Why it's wrong here
Incorrect: Azure Database for MariaDB does not have native JSON support.
- ✓
Azure SQL Managed Instance
Why this is correct
Correct: Azure SQL Managed Instance also supports native JSON and automatic failover, making it a valid choice.
- ✗
Azure Cosmos DB
Why it's wrong here
Incorrect: Azure Cosmos DB is a NoSQL database, not relational.
- ✗
Azure Database for PostgreSQL
Why it's wrong here
Incorrect: While Azure Database for PostgreSQL has jsonb, the question focuses on Azure SQL services, and Managed Instance is the preferred second answer over PostgreSQL in this context.
Go deeper
Related to this question
Learn chapter
Data Roles and Core Concepts
Key term
SQL Managed Instance
SQL Managed Instance is a cloud database service from Azure that gives you most of the features of a full SQL Server instance without you having to manage the underlying hardware or software patches.
Key term
Relational database
A relational database organizes data into tables with rows and columns, where each table relates to others using unique keys, allowing efficient storage, retrieval, and manipulation of structured information.
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