# Interface: CollectionRules

Defined in: [packages/core/src/records/rules.ts:22](https://github.com/leifriksheim/minca/blob/main/core/src/records/rules.ts#L22)

## Properties

| Property | Modifier | Type | Description | Defined in |
| ------ | ------ | ------ | ------ | ------ |
| <a id="property-final"></a> `final?` | `readonly` | `true` | Records are written once: no edit and no delete, by anyone. A vote, a ballot or a proof that others count on stays what it was. | [packages/core/src/records/rules.ts:36](https://github.com/leifriksheim/minca/blob/main/core/src/records/rules.ts#L36) |
| <a id="property-fixed"></a> `fixed?` | `readonly` | readonly `string`[] | Fields that keep the value the record was created with | [packages/core/src/records/rules.ts:31](https://github.com/leifriksheim/minca/blob/main/core/src/records/rules.ts#L31) |
| <a id="property-oneper"></a> `onePer?` | `readonly` | readonly `string`[] | At most one record per combination of these — by construction: the key is derived from them. `@author` is the writer's identity, `link:<rel>` the record a link points at, anything else a field of the body. `['@author', 'link:about']` is one vote per person per poll. | [packages/core/src/records/rules.ts:29](https://github.com/leifriksheim/minca/blob/main/core/src/records/rules.ts#L29) |