Data Stores

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Bartosz Roguski
Machine Learning Engineer
July 4, 2025
Glossary Category

Data Stores are persistent storage systems designed to house, organize, and manage various types of data for retrieval, analysis, and processing across different applications and use cases. These storage solutions encompass relational databases, NoSQL databases, data warehouses, data lakes, key-value stores, document databases, and graph databases, each optimized for specific data structures and access patterns. Modern data stores support diverse data formats including structured, semi-structured, and unstructured data, providing scalability, reliability, and performance optimization for enterprise applications. They feature capabilities such as ACID compliance, distributed architectures, real-time indexing, and query optimization engines.

Data stores serve as foundational infrastructure for AI applications, supporting feature stores for machine learning, vector databases for embeddings, and operational databases for real-time inference. Popular implementations include PostgreSQL, MongoDB, Amazon S3, Snowflake, and specialized AI-optimized stores like Pinecone and Weaviate for vector search operations.