---
id: "object-content-category"
type: "concept"
title: "Object type, content type, and data category"
summary: "Identity, payload shape, and category are separate axes."
problem: "Collapsing them forces brittle one-size schemas."
why: "Memorix needs the same subject to carry multiple content shapes over time."
mentalModel: "Object identity × content type × category."
audiences: ["developers"]
related: ["raw-records", "composition"]
---
# Object type, content type, and data category

Identity, payload shape, and category are separate axes.

## Problem

Collapsing them forces brittle one-size schemas.

## Why

Memorix needs the same subject to carry multiple content shapes over time.

## Mental model

Object identity × content type × category.