13. Store custom data

A plain frozen dataclass is enough for custom stored data:

from dataclasses import dataclass

from httk.store import SqliteStore


@dataclass(frozen=True)
class StructureIsEdible:
    formula: str
    is_edible: bool


store = SqliteStore("presentation.sqlite", entry_records={})
store.save(StructureIsEdible("ClNa", True))
store.save(StructureIsEdible("As", False))

No ORM base class, decorator, or plugin property is required. Nested frozen dataclasses become references; Annotated storage markers add indexes, uniqueness, skipped fields, and fixed tensor shapes.

See the complete storable-record example in the versioned httk-store documentation listed by the module directory.