AWS Certified Cloud Practitioner
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What type of database is Amazon DynamoDB?
Real Exam
Community
RRitesh
A
In-memory
B
Relational
C
Key-value
D
Graph
Explanation:
Amazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability. It is specifically designed as a key-value and document database.
Key characteristics of DynamoDB:
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Key-value store: Data is stored as items (values) identified by a primary key
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NoSQL database: Does not use the relational model
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Serverless: Automatically scales based on workload
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Managed service: AWS handles infrastructure management, patching, and backups
Why other options are incorrect:
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In-memory: While DynamoDB can use in-memory caching through DAX (DynamoDB Accelerator), it is not primarily an in-memory database
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Relational: This describes traditional SQL databases like Amazon RDS, which use tables with fixed schemas and relationships
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Graph: This describes databases like Amazon Neptune that are optimized for storing and querying relationships between data points
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