{
  "@context": {
    "@version": 1.1,
    "schema": "https://schema.org/",
    "xsd": "http://www.w3.org/2001/XMLSchema#",
    "rdfs": "http://www.w3.org/2000/01/rdf-schema#",
    "sf": "https://api-evangelist.github.io/schema-free/vocab#",

    "SchemaFreeDocument": {
      "@id": "sf:SchemaFreeDocument",
      "@type": "rdfs:Class",
      "rdfs:comment": "A document stored in a schema-free database without a predefined fixed schema"
    },
    "NoSQLDatabase": {
      "@id": "sf:NoSQLDatabase",
      "@type": "rdfs:Class",
      "rdfs:comment": "A database that does not require a fixed relational schema"
    },
    "DocumentCollection": {
      "@id": "sf:DocumentCollection",
      "@type": "rdfs:Class",
      "rdfs:comment": "A collection of related documents in a document store"
    },

    "_id": {
      "@id": "schema:identifier",
      "@type": "xsd:string"
    },
    "_collection": {
      "@id": "sf:collection",
      "@type": "xsd:string"
    },
    "_version": {
      "@id": "schema:version",
      "@type": "xsd:integer"
    },
    "_created": {
      "@id": "schema:dateCreated",
      "@type": "xsd:dateTime"
    },
    "_modified": {
      "@id": "schema:dateModified",
      "@type": "xsd:dateTime"
    },
    "_type": {
      "@id": "sf:documentType",
      "@type": "xsd:string"
    },
    "embeddedDocument": {
      "@id": "sf:embeddedDocument",
      "@type": "@id",
      "rdfs:comment": "A document embedded within a parent document"
    },
    "documentReference": {
      "@id": "sf:documentReference",
      "@type": "@id",
      "rdfs:comment": "A reference to an external document by ID"
    },
    "indexedField": {
      "@id": "sf:indexedField",
      "@type": "xsd:string",
      "rdfs:comment": "A field that has been indexed for query performance"
    },
    "shardKey": {
      "@id": "sf:shardKey",
      "@type": "xsd:string",
      "rdfs:comment": "The field used to determine data partitioning/sharding"
    }
  }
}