In which of these objects can you find the Query Editor?

The Query Editor is a powerful tool that allows users to build and manipulate queries against data sources in Appian. This editor is available within Expression Rules, which are designed specifically to create reusable expressions and logic. When working with an Expression Rule, users can directly write queries using Appian’s expression language and utilize the Query Editor to visually construct and test their queries.

Accessing the Query Editor in Expression Rules is beneficial for developing complex queries, as it provides the necessary functionality to select, filter, and aggregate data in a structured manner.

On the other hand, the other options do not offer this feature. Process Models involve workflow and task management, Interfaces focus on user interface design, and Data Store Entities are used to represent database tables or views, but they do not provide the Query Editor for developing data queries directly in their environments.