Answer
SQL uses tables and schemas; NoSQL uses flexible JSON-like documents or key-value stores.
Quick Answer
SQL databases (PostgreSQL, MySQL) store data in structured tables with strict schemas and support complex joins and transactions — great for relational data. NoSQL databases (MongoDB, Redis) store data in flexible formats (documents, key-value) without strict schemas — great for unstructured or rapidly evolving data and horizontal scaling.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ