> Markdown version of [Strong Consistency](https://vaadin.com/docs/v25/building-apps/forms-data/consistency/strong). Section index: [llms.txt](https://vaadin.com/docs/v25/building-apps/llms.txt)

# Strong Consistency

Strong consistency, or immediate consistency, means that the effects of an update are immediately observable across the entire system. For instance, if a user inserts a new record into the system, it should be visible to all other users as soon as the user has pressed the **Save** button.

One way of achieving strong consistency is to use transactions. Modern databases support transactions. As a general rule, you should use them whenever your business application reads or writes data. For more information about this, see the [Transactions](https://vaadin.com/docs/v25/building-apps/forms-data/consistency/transactions.md) documentation page.

> **Important: Work in progress**
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> This page is a stub. It’ll be expanded later.