> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/database-devops/3.0/use-db-devops/understanding-state-of-database.md).

# Understanding State of Database

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[Deployment Architecture](/database-devops/3.0/use-db-devops/understanding-state-of-database/deployment-architecture.md)
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[User Interface of Harness Database DevOps](/database-devops/3.0/use-db-devops/understanding-state-of-database/unified-environment-overview.md)
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[Access ChangeSets via Expressions](/database-devops/3.0/use-db-devops/understanding-state-of-database/access-applied-changesets.md)
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