Entity schemas

{
  "name": "Task",
  "type": "object",
  "properties": {
    "title":    { "type": "string", "description": "What needs doing" },
    "done":     { "type": "boolean", "default": false },
    "priority": { "type": "string", "enum": ["low", "medium", "high"], "default": "medium" },
    "due":      { "type": "string", "format": "date" },
    "tags":     { "type": "array", "items": { "type": "string" } },
    "estimate": { "type": "number" }
  },
  "required": ["title"],
  "rls": { "read": true, "create": true, "update": { "created_by": "{{user.email}}" }, "delete": { "created_by": "{{user.email}}" } }
}

Rules

• name is PascalCase and must match how you call it: ds.entities.Task.
• type is always "object"; put properties at the top level.
• Field types: string, number, integer, boolean, array, object. Useful string formats: date, date-time, email, uri.
• default fills missing fields on create; required rejects creates that lack them.
• rls is optional; see Security rules.
• Comments (//) are allowed — the files are read as JSONC.

Relationships

Store the related record's id: an Order with customer_id, then ds.entities.Customer.get(order.customer_id) or filter({ customer_id }).