# Datasource attributes

> Initially the table only contains datasource attributes. Each datasource attribute corresponds to one of the columns in your data file. You can see the attribute details in the **Edit Datasource Attribute** window.

## Datasource attributes

Initially the table only contains datasource attributes. Each datasource attribute corresponds to one of the columns in your data file. You can see the attribute details in the **Edit Datasource Attribute** window.

You can open the **Edit Datasource Attribute** window in the following ways:

* Double-click on the datasource attribute table item;
* Right-click on the datasource attribute table item and select **Edit...** from the context menu.
  :::note
  This also applies to table items of the other table item types.
  :::

The **Edit Datasource Attribute** window shows the following information:

* The **Name in data source** and the **Attribute type**.
* The **Number of unique values** and the **Total number of records**.
* A preview of the values **Value** (Integer) and their **Frequency**.

See illustration below.

  ![docs image](https://dev-assets.cms.uipath.com/assets/images/process-mining/process-mining-docs-image-53700-a028e131-6922fcd3.webp)

## Attribute type

Below is an overview of the different attribute types and their default format settings.

| Attribute type | Specification |
| --- | --- |
| Boolean | N/A |
| Date | Format: `YYYY-M-D` |
| DateTime | Date format: `YYYY-M-D`  Time format: `h:mm[:ss[[.zzz]]]` |
| Double | Decimal separator:. (dot)  Thousand separator: none |
| Integer | Thousand separator: none |
| Text | N/A |

### Date and DateTime attribute types

For attributes of type *Date* a **Date format** and attributes of type *DateTime* a **Date format** and a **Time format** are specified. You can select a different format from a list of predefined formats. See the illustration below.

  ![docs image](https://dev-assets.cms.uipath.com/assets/images/process-mining/process-mining-docs-image-53716-815d08aa-24ac5fdb.webp)

#### Custom date format

If the datasource attribute you want to load uses a format that is not predefined, you can select the option *custom date format*. A popup dialog is displayed where you can enter the desired format. See the illustration below.

  ![docs image](https://dev-assets.cms.uipath.com/assets/images/process-mining/process-mining-docs-image-54952-3749f79a-178a1c60.webp)

Below is an overview of the characters that you can use to specify a custom date or a time format.

| Character(s) | Description |
| --- | --- |
| `y`or `yy` | Years |
| `m` or `mm` | Months |
| `w`or `ww` | Weeks |
| `d` or `dd` | Days |
| `h`, `hh`, or `hhh` | Hours, where `hh` includes a leading zero. |
| `n`, `nn`, or `nnn` | Minutes, where `nn` includes a leading zero. |
| `s`, `ss`, or `sss` | Seconds, where `ss` includes a leading zero. |
| `z`or `zzz` | Milliseconds, where `zzz` includes a leading zero. |
| `{` | An optional string that is only printed if the preceding value is not null. |

For example `yy{y }mm{m }ww{w }dd{d }hhh{h }nn{n }sss{s }`. See the illustration below.

  ![docs image](https://dev-assets.cms.uipath.com/assets/images/process-mining/process-mining-docs-image-54148-c1185e91-99e0e5c6.webp)