[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Relation](https://evolu.dev/docs/api-reference/common/Relation) › createRelation

## Call Signature

```ts
function createRelation<A, B>(): Relation<A, B>;
```

Defined in: [packages/common/src/Relation.ts:160](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Relation.ts#L160)

Creates a [Relation](https://evolu.dev/docs/api-reference/common/Relation/interfaces/Relation).

## Call Signature

```ts
function createRelation<A, B, LA, LB>(
  options: CreateRelationOptions<A, B, LA, LB>,
): Relation<A, B>;
```

Defined in: [packages/common/src/Relation.ts:161](https://github.com/evoluhq/evolu/blob/e7144e2bbe9069362b62dec1b64a8aa922b8f1b0/packages/common/src/Relation.ts#L161)

Creates a [Relation](https://evolu.dev/docs/api-reference/common/Relation/interfaces/Relation).