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This document provides comprehensive guidelines for using and designing schema.org structured data, covering naming conventions, data modeling principles, and best practices for technical implementation. (本文档提供了使用和设计 schema.org 结构化数据的全面指南，涵盖命名规范、数据建模原则和技术实施最佳实践。)

Schema.org employs a flexible, RDF Schema-derived data model with multiple inheritance types and properties, designed pragmatically for search engine optimization rather than as a universal ontology. It emphasizes extensibility and conformance flexibility, supporting formats like JSON-LD and Microdata. (Schema.org采用基于RDF Schema的灵活数据模型，支持多重继承的类型和属性，旨在优化搜索引擎而非构建通用本体。它强调可扩展性和合规灵活性，支持JSON-LD和Microdata等格式。)

Schema.org provides a hierarchical vocabulary of 827 types and 1528 properties for structured data markup, with community extensions and development processes. (Schema.org提供包含827种类型和1528个属性的层次化词汇表，用于结构化数据标记，支持社区扩展和开发流程。)