# Concepts - [Understanding Schemas, Schema IDs, Data IDs, and Publisher](https://docs.somnia.network/developer/data-streams/concepts/understanding-schemas-schema-ids-data-ids-and-publisher.md) - [Extending and composing data schemas](https://docs.somnia.network/developer/data-streams/concepts/extending-and-composing-data-schemas.md): The best blockchain primitives are composable and schemas are no exception. Promoting re-use is a priority - [Somnia Data vs Event Streams](https://docs.somnia.network/developer/data-streams/concepts/somnia-data-vs-event-streams.md): Serving different purposes, data and event streams can be used independently or together - [Intersection with Somnia Reactivity](https://docs.somnia.network/developer/data-streams/concepts/intersection-with-somnia-reactivity.md): How to build applications that react to data being streamed to the Somnia chain by creating subscriptions - [Data Provenance and Verification in Streams](https://docs.somnia.network/developer/data-streams/concepts/data-provenance-and-verification-in-streams.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.somnia.network/developer/data-streams/concepts.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.