Which two objects can you query?

The question focuses on which objects can be queried in Appian. Data store entities are specifically designed to store and retrieve data and can be queried directly using Appian's query functions. They are integral components in the Appian data architecture and provide structured access to data that can be manipulated through Appian's query language.

In contrast, while record types and reports contain data and can be involved in querying processes, they do not serve as direct objects that can be queried in the same way that data store entities do. Record types are higher-level abstractions built upon data store entities with user-friendly representations of data, and they allow users to interact with data but are not directly queried as their underlying entities are. Reports, on the other hand, aggregate and present data for user consumption but are also not entities in the database themselves; they generally operate on the results derived from queries against data store entities or record types.

Sites do not contain queryable data structures but rather serve as a customizable user interface for presenting Appian applications to users. Therefore, the emphasis remains on data store entities, which are the foundational elements directly involved in data queries within the Appian environment.