Cosmos DB overview and use cases in Azure - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Azure Cosmos DB?

Azure Cosmos DB is a globally distributed, multi-model database service designed to provide low latency and high availability for applications worldwide.

beginner

Name two key features of Cosmos DB.

1. Global distribution with multi-region writes.<br>2. Multiple data models like document, key-value, graph, and column-family.

intermediate

Why is Cosmos DB suitable for real-time applications?

Because it offers low latency reads and writes with guaranteed single-digit millisecond response times, making it ideal for real-time user experiences.

beginner

What does 'multi-model' mean in Cosmos DB?

It means Cosmos DB supports different types of data models such as document, key-value, graph, and column-family within the same service.

intermediate

List three common use cases for Cosmos DB.

1. IoT data ingestion and processing.<br>2. Personalized recommendations in e-commerce.<br>3. Real-time analytics and telemetry.

What kind of data models does Cosmos DB support?

A Block storage only

B Relational only

C File storage only

D Document, key-value, graph, column-family

Cosmos DB supports multiple data models including document, key-value, graph, and column-family.

Which feature of Cosmos DB helps it serve users globally with low latency?

A Global distribution with multi-region writes

B Single region deployment

C Manual data replication

D Batch processing only

Global distribution with multi-region writes allows Cosmos DB to serve users worldwide with low latency.

What is a common use case for Cosmos DB?

A Real-time telemetry data processing

B Static website hosting

C Video streaming service only

D Email server

Cosmos DB is often used for real-time telemetry data processing due to its low latency and scalability.

Which of these is NOT a feature of Cosmos DB?

A Multi-model database support

B Guaranteed single-digit millisecond latency

C Supports SQL Server stored procedures

D Automatic and global distribution

Cosmos DB does not support SQL Server stored procedures; it uses its own APIs and stored procedures.

How does Cosmos DB ensure high availability?

A By manual backups only

B By replicating data across multiple regions

C By storing data on a single server

D By limiting user access

Cosmos DB replicates data across multiple regions to ensure high availability and durability.

Explain what Azure Cosmos DB is and why it is useful for global applications.

Think about how apps need fast and reliable data access everywhere.

Describe three common scenarios where Cosmos DB would be a good choice.

Consider applications that need fast, scalable, and flexible data storage.