# NoSQL

CEFR C1 · Noun

Source: https://englishreference.com/word/nosql
Updated: 2026-08-15

## Definition

a type of database that does not use the traditional table-based system. It is often used for handling very large amounts of data or information that does not fit into a simple list.

For teachers: a category of database management systems that provides a mechanism for storage and retrieval of data modelled in means other than the tabular relations used in relational databases. Often used for real-time web applications and big data processing.

## Examples

- The developer chose a NoSQL database to handle the unstructured social media data.
- Because the application required high scalability and a flexible schema, the team migrated from a traditional SQL server to a NoSQL solution.
- While relational databases excel at maintaining ACID compliance for complex transactions, NoSQL architectures are frequently preferred for distributed systems where horizontal scaling and high availability are the primary technical requirements.

## Usage notes

- Often used as a modifier before another noun (e.g., 'NoSQL database', 'NoSQL technology').

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.