# createCollection()
This method creates a collection with the specified schema.

## Invocation
```javascript
new milvusClient(MILUVS_ADDRESS).collectionManager.createCollection(CreateCollectionReq);
```

## Parameters
### CreateCollectionReq(object)
| Parameter       | Description      | Type   | Required |
| --------------- | ---------------- | ------ | -------- |
| collection_name | Name of the collection to create  | String | True     |
| fields          | Schema of the collection to create | Field | True     |

### Fields(object)
| Parameter      | Description          | Type     | Required |
| -------------- | -------------------- | -------- | -------- |
| name           | Field name           | String   | True     |
| description    | Field description    | String   | True     |
| data_type      | Data type of the field (see the table below)           | DataType | True     |
| type_params    | Vector field parameters   | Object   | False    |
| autoID         | Boolean value to indicate whether the IDs are automatically generated | Bool     | False    |
| is_primary_key | Boolean value to indicate whether this field is used as the primary key       | Bool     | False    |

#### DataType
| Value | Description  |
| ----- | ------------ |
| 0     | None         |
| 1     | Bool         |
| 2     | Int8         |
| 3     | Int16        |
| 4     | Int32        |
| 5     | Int64        |
| 10    | Float        |
| 11    | Double       |
| 20    | String       |
| 100   | Binary vector |
| 101   | Float vector  |

## Example
```javascript
new milvusClient(MILUVS_ADDRESS).collectionManager.createCollection({
  collection_name: 'my_collection',
  fields: [
    {
      name: "vector_01",
      description: "vector field",
      data_type: DataType.FloatVector,
      type_params: {
        dim: "8"
      }
    },
    {
      name: "age",
      data_type: DataType.Int64,
      autoID: true,
      is_primary_key: true,
      description: "",
    },
  ],
});
```

## Return
```javascript
// create collection return
{ error_code: 'Success', reason: '' }
```