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## 18.5.8 Working with Oracle Cloud Applications BOSS REST Services

Learn about using APEX REST Data Sources for Oracle Cloud Applications (BOSS) REST Services.

- About Oracle Cloud Applications BOSS REST Services
  Learn about REST Data Source support for Oracle Cloud Applications BOSS REST Services.
- Creating a BOSS REST Data Source
  Learn about creating a BOSS REST Data Source.
- About the BOSS REST Data Source Definition
  Learn about the BOSS REST Data Source definition.
- BOSS REST Data Source Runtime Features
  Learn about BOSS REST Data Source runtime features.
- Filter Parameters for Query By Example and Parent and Child Use Cases
  Learn about filter parameters for Query By Example (QBE) and parent and child use cases.
- Best Practices for Configuring BOSS REST Service Base URL
  Learn about best practices fo configuring BOSS REST Service Base URL
- Working with Parent and Child Data in Regions
  Learn about working with parent and child data in regions.
- Using BOSS REST Data Sources in PL/SQL
  Use BOSS REST Data Sources to show data in any APEX region
- Performing DML Operations on Objects with ETags
  Learn about performing DML operations on objects with `ETags`.
- Reading Business Objects with Nested Collections
  Define REST Data Source profile columns of type Array to work programmatically with nested collections of BOSS business objects.
- Writing Business Objects with Nested Collections
  Use the `APEX_EXEC` package to programmatically write a parent object and its nested child objects in a single payload.
- Invoking BOSS Business Object Custom Actions
  Learn about support for BOSS business object custom actions.

Parent topic: Managing REST Data Sources