> For the complete documentation index, see [llms.txt](https://documentation.astera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.astera.com/faqs/sources.md).

# Sources

- [Can I use data from unstructured documents in dataflows?](https://documentation.astera.com/faqs/sources/can-i-use-data-from-unstructured-documents-in-dataflows.md)
- [Can I extract data from fillable PDF forms in Astera?](https://documentation.astera.com/faqs/sources/can-i-extract-data-from-fillable-pdf-forms-in-astera.md)
- [Does Astera support extraction of data residing in online sources?](https://documentation.astera.com/faqs/sources/does-astera-support-extraction-of-data-residing-in-online-sources.md)
- [How do I process multiple files in a directory with a single execution of a flow?](https://documentation.astera.com/faqs/sources/how-do-i-process-multiple-files-in-a-directory-with-a-single-execution-of-a-flow.md)
- [Can I write information from the File System Items Source to the destination?](https://documentation.astera.com/faqs/sources/can-i-write-information-from-the-file-system-items-source-to-the-destination.md)
- [Can I split a source file into multiple files based on record count?](https://documentation.astera.com/faqs/sources/can-i-split-a-source-file-into-multiple-files-based-on-record-count.md)
- [Does Astera support data extraction from unstructured docs or text files?](https://documentation.astera.com/faqs/sources/does-astera-support-data-extraction-from-unstructured-docs-or-text-files.md)
- [What is the difference between full and incremental loading in database sources?](https://documentation.astera.com/faqs/sources/what-is-the-difference-between-full-and-incremental-loading-in-database-sources.md)
- [How is the File System Items Source used in a Dataflow?](https://documentation.astera.com/faqs/sources/how-is-the-file-system-items-source-used-in-a-dataflow.md)
- [How does the PDF Form Source differ from the Report Source in Astera?](https://documentation.astera.com/faqs/sources/how-does-the-pdf-form-source-differ-from-the-report-source-in-astera.md)
- [Does Astera support extraction of data from EDI files?](https://documentation.astera.com/faqs/sources/does-astera-support-extraction-of-data-from-edi-files.md)
- [How does the Raw Text Filter option work in file sources in Astera?](https://documentation.astera.com/faqs/sources/how-does-the-raw-text-filter-option-work-in-file-sources-in-astera.md)


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