> For the complete documentation index, see [llms.txt](https://sparklytical.gitbook.io/typeorm/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sparklytical.gitbook.io/typeorm/guides.md).

# Guides

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[Active Record vs Data Mapper](/typeorm/guides/active-record-vs-data-mapper.md)
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[Working with MongoDB](/typeorm/guides/working-with-mongodb.md)
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[Using Validation](/typeorm/guides/using-validation.md)
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[Example with Express](/typeorm/guides/example-with-express.md)
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[Usage with JavaScript](/typeorm/guides/usage-with-javascript.md)
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[Migration from Sequelize](/typeorm/guides/migration-from-sequelize.md)
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