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4 guides
Coldwast wrote
Jun 18, 2026 in Programming, Data, Databases — SQL databases store structured data in related tables with a fixed schema and strong consistency; NoSQL trades some of that for flexible schemas and horizontal scale. Consistency, scaling, querying, and when to choose each.
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Jun 15, 2026 in Programming, Data, Databases — A database is an organised collection of data, managed by software that lets you store, query and update it reliably. Relational vs NoSQL, key concepts (tables, schema, ACID), real examples, and how it relates to SQL.
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Jun 14, 2026 in Programming, Data, Databases — SQL is the standard language for storing, querying and changing data in relational databases. Core commands (SELECT, INSERT, UPDATE, DELETE), how a query works, SQL vs NoSQL, and why it is still essential in 2026.
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Jun 14, 2026 in Programming, Web, Data — JSON is a lightweight, human-readable text format for structured data — the language most web APIs and config files speak. Its syntax, why it is everywhere, how it compares to XML, and its honest limits.
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