# Value Mappings

A Value Mapping is essentially a lookup, where if a "From" value is encountered, it's replaced with its corresponding "To" value.

## Value Mapping Sets

A Value Mapping Set encompasses multiple Value Mappings and has various settings associated with it that change the behavior of it's mappings.

### Anatomy

<figure><img src="https://688288018-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1flQ2To8tQpCQWl2Ty9U%2Fuploads%2Fl9F81lb6Gjx4XyJs6bxp%2FETL%20Value%20Mapping%20Sets.png?alt=media&#x26;token=6443e116-5dcb-4d39-a251-86b3b1a5cc11" alt=""><figcaption></figcaption></figure>

1. The name of the Value Mapping Set.
2. Button to edit a Value Mapping Set.
3. Button to delete a Value Mapping Set.
4. Button to add a new Value Mapping Set.

### Settings

When creating a new or editing an existing Value Mapping Set, there are various settings that can be configured.

<figure><img src="https://688288018-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1flQ2To8tQpCQWl2Ty9U%2Fuploads%2FEnCHPpBFjpTymUQ1ERAO%2FETL%20Value%20Mapping%20Set%20Settings.png?alt=media&#x26;token=77863a7d-4094-4bf2-bc3c-0ad6caeef891" alt=""><figcaption></figcaption></figure>

1. The name of the Value Mapping Set.
2. Checkbox that sets whether or not "From" values should be compared case sensitively.
3. Checkbox that enables a default value if no "From" value is matched.
4. The default value if no "From" value is matched.

## Value Mappings

A Value Mapping Set is made up of multiple Value Mappings.

### Anatomy

<figure><img src="https://688288018-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F1flQ2To8tQpCQWl2Ty9U%2Fuploads%2FzEPajPo7EYvM5Zjliao0%2FETL%20Value%20Mappings.png?alt=media&#x26;token=f300fe64-82c8-4f98-aea1-d1503896b502" alt=""><figcaption></figcaption></figure>

1. The "From" value.
2. The "To" value.
3. Button to add a new Value Mapping.
4. Button to access/modify the Value Mapping Set settings.
5. Button to save the Value Mappings.
6. Button to return to the list of Value Mapping Sets.
7. Button to delete a Value Mapping.