# Opaque Binary/Untyped Structures

> Using opaque binary or untyped data that carries no description of its own structure.

Record: `lexicon:opaque-binary-untyped-structures`
Kind: anti-pattern
Layer: [Declarative Core](https://banes-lab.com/records/layer/declarative-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lexicon-opaque-binary-untyped-structures

Listed in [Lexicon terms](https://banes-lab.com/api/records/lexicon.md), after [Opaque API](https://banes-lab.com/records/lexicon/opaque-api.md) and before [Client Generation](https://banes-lab.com/records/lexicon/client-generation.md).

## Category

- [Metadata / Self-Description / Declarative Systems](https://banes-lab.com/records/lexicon-category/metadata-self-description-declarative-systems.md)

## Negated by

- [Self-Describing Structures](https://banes-lab.com/records/architecture/self-describing-structures.md)

## Linked from

- [Metadata / Self-Description / Declarative Systems](https://banes-lab.com/ontology/principles/architecture-category-metadata-self-description-declarative-systems.md)