# Static Schema Definition

## [CSV Input](https://github.com/mbertazz/hop-docs-md/blob/main/modules/ROOT/pages/metadata-types/pipeline/transforms/csvinput.L1Bun4ueHJ)Static Schema Definition

### Description

<img src="/files/PcvKwJXleFoFsHoA3ubw" alt="folder" data-size="line">

A Static Schema Definition describes a stream layout that can be applied to a selected set of input/output transforms. The Schema Definition is a way to define a recurrent stream layout, that can be reused in multiple pipelines.

Being able to use the same schema definition in multiple pipelines simplifies development and reduces the risk of errors in manual field or layout specification.

### Related Plugins

Transforms:

* [Text File Input](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/textfileinput.md)
* [Text File Output](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/textfileoutput.md)
* [CSV File Input](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/csvinput.md)
* [Excel Input](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/excelinput.md)
* [Excel Writer](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/excelwriter.md)
* [Schema Mapping](/data-shaper-1.21/knowing-the-data-shaper-designer/pipelines/transforms/schemamapping.md)

### Options

| Option            | Description                                                                             |
| ----------------- | --------------------------------------------------------------------------------------- |
| Name              | The name to be used for this schema definition                                          |
| Description       | The description to be used for this schema definition                                   |
| Field Separator   | separator used between fields in the schema definition                                  |
| Enclosure         | field enclosure used for fields in the schema definition                                |
| Field Definitions | List of fields and attributes that describe the file layout for this schema definition. |


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