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面试准备

AWS DynamoDB 面试题与答案

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问题 1. What is DynamoDB?

DynamoDB is a fully managed NoSQL database service provided by AWS.

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问题 2. Explain the key-value model in DynamoDB.

DynamoDB uses a key-value model where each item (record) in the database is uniquely identified by a primary key.

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问题 3. What are the two types of primary keys in DynamoDB?

DynamoDB supports two types of primary keys: partition key and composite key (partition key + sort key).

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问题 4. What is the importance of Provisioned Throughput in DynamoDB?

Provisioned Throughput is the capacity (read and write) reserved for a table. It ensures predictable performance.

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问题 5. Explain the differences between DynamoDB and traditional relational databases.

DynamoDB is a NoSQL database with a flexible schema, automatic scaling, and high availability, while traditional relational databases are SQL-based with a fixed schema.

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