# document database

CEFR C1 · Compound

Source: https://englishreference.com/word/document-database
Updated: 2026-07-22

## Definition

a type of computer storage that saves information as flexible files rather than in strict tables. It is useful for data that changes often or does not fit into a simple list.

For teachers: a non-relational database system that stores, retrieves, and manages semi-structured data as discrete documents, typically in formats like JSON or XML. Unlike traditional SQL databases, it allows for a flexible schema where each record can have a different structure.

## Examples

- The app uses a document database to store user profiles.
- Because our product catalog changes frequently with new attributes, we migrated to a document database to avoid rigid table structures.
- By utilizing a document database, the development team achieved horizontal scalability and the ability to ingest diverse data streams without the overhead of complex relational mapping.

## Usage notes

- Often contrasted with 'relational database' or 'SQL database'.

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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.