# Data Dependencies

> The requirement that the data each stage needs from others be declared as explicit dependencies.

Record: `lex:data-dependencies`
Kind: constraint
Layer: [Execution Core](https://banes-lab.com/records/layer/execution-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-data-dependencies

## category

- [Streaming / Pipeline / Dataflow Processing](https://banes-lab.com/records/lex-category/streaming-pipeline-dataflow-processing.md)

## referenced-by

- [Dataflow Architecture](https://banes-lab.com/records/arch/dataflow-architecture.md)