# Sample MDEX Engine data sources

The Discovery Framework installation package includes sample data sources. You can use the samples as a model for your own data sources.

The following sample data sources are located in the endeca-portal\data\endeca-data-sources directory:

- base-filters-data-source.json.sample
- child-data-source.json.sample
- secured-data-source.json.sample
- simple-data-source.json.sample
- ssl-enabled-data-source.json.sample

This directory also contains a default.json file, containing host and port information only. The default data source is discussed later in this section.