Databases Intermediate

What is NoSQL?

A category of databases that store data in non-tabular formats, optimized for specific data models and access patterns.

NoSQL databases sacrifice some relational features for scalability and flexibility. Types include document stores (MongoDB — JSON documents), key-value stores (Redis — simple lookups), column-family stores (Cassandra — wide columns), and graph databases (Neo4j — relationships).

NoSQL databases often provide eventual consistency rather than strong consistency, horizontal scaling, and schema flexibility. They excel at specific use cases like caching, real-time analytics, and content management.

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MongoDB Fundamentals: Building Scalable NoSQL Applications with Document Databases

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SQL for Absolute Beginners

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Redis Fundamentals

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Related Terms

The process of organizing database tables to reduce data redundancy and improve data integrity.

A data structure that improves the speed of data retrieval operations on database tables at the cost of additional storage.

The structure definition of a database including tables, columns, data types, relationships, indexes, and constraints.

A database that uses graph structures with nodes, edges, and properties to store and query highly connected data.

Connection String

A formatted string containing all parameters needed to establish a connection to a database server.

EXPLAIN ANALYZE

A PostgreSQL command that shows the execution plan of a query along with actual runtime statistics for performance tuning.

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