NoSQL Databases (DynamoDB)
Amazon DynamoDB is a key NoSQL database service offered by AWS. Unlike relational databases that use tables with predefined schemas, NoSQL databases are designed for more flexible and scalable storage solutions, ideal for modern applications dealing with high volumes of unstructured or semi-structured data.
DynamoDB allows you to store key-value pairs and document-based data, and is known for its low-latency and high-performance capabilities. This database is a popular choice for web applications, mobile apps, gaming, IoT systems, and other real-time applications requiring fast reads and writes. The certification exam AWS Database Certification requires knowledge of DynamoDB features like:
- Auto-scaling: Dynamically adjusts throughput to handle unpredictable workloads.
- Global tables: Provides multi-region, multi-master replication for global applications.
- Transactions: Ensures atomic operations on multiple items in a single request.
A solid understanding of when and how to use DynamoDB is critical for passing the AWS Database Certification.
3. Data Warehousing (Redshift)
Amazon Redshift is AWS’s cloud-based data warehousing service designed to handle petabytes of data for analytical workloads. It enables organizations to analyze large datasets using SQL queries and integrates well with machine learning, BI tools, and other AWS services. Redshift is tested heavily in the certification process, focusing on the setup, scaling, and optimization of complex analytics environments.
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