[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [local‑first/Storage](https://evolu.dev/docs/api-reference/common/local-first/Storage) › DbChange

```ts
const DbChange: object({
  table: String,
  id: Id,
  values: ValidDbChangeValues,
  isInsert: Boolean,
  isDelete: /*#__PURE__*/ nullOr(Boolean),
});
```

Defined in: [packages/common/src/local-first/Storage.ts:328](https://github.com/evoluhq/evolu/blob/49ea8ca499566aba270f8cb601e7f49aa62320f8/packages/common/src/local-first/Storage.ts#L328)

A DbChange is a change to a table row. Together with a unique
[Timestamp](https://evolu.dev/docs/api-reference/common/local-first/Timestamp/variables/Timestamp), it forms a [CrdtMessage](https://evolu.dev/docs/api-reference/common/local-first/Storage/interfaces/CrdtMessage).