GB/T 39872-2021 in English
VALIDData specification for disclosure of technical indicators in standard literature
- Issued on:2021-03-09
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 10 business days
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《GB/T 39872-2021标准文献技术指标揭示数据规范》由TC486（全国科技平台标准化技术委员会）归口，主管部门为科学技术部。
Introduction
Standard Overview and Technical Background
GB/T39872-2021 "Standard Document Technical Indicator Disclosure Data Specification" was issued by the State Administration for Market Regulation, which stipulates the metadata description system of standard document technical indicators. This standard originates from the needs of my country's standardization digital transformation. By establishing a unified technical indicator disclosure framework, it solves the problem of cross-domain standard data interoperability.
Core metadata system
| Metadata subset | Key elements | Constraints |
|---|---|---|
| Subject object | Standard number, professional field code, subject object code | Required (M) |
| Ontology class/disclosure vocabulary | Chinese and English disclosure words, relationship between words, category category | Conditional mandatory (C) |
| Example structure | Four-level example metadata, structure code, record code | Optional (O) |
Key Technical Features
UML Modeling Application
The standard uses the Unified Modeling Language (UML) to define metadata relationships:
- Class diagrams represent metadata entities, such as the Disclosure Content class contains 65 attributes
- Association relationships describe the whole-part relationship between subject objects and instance structures
- Generalization relationships implement the inheritance system of documents-standard documents-technical regulations
Data dictionary specifications
The standard requires that the data dictionary must contain 9 core attributes:
- Chinese name/role name (4.3.2)
- English name (follow the naming rules of 4.1.4)
- Short name (abbreviation within 8 characters)
- Data type (character/integer, etc.)
- Value range (free text or code table)
Implementation suggestions
Professional field adaptation
Taking the food industry as an example, the professional field code 01 needs to be coordinated with:
| Example body code | 01(Fruit) | 02(Vegetable) |
| Typical disclosure indicators | Pesticide residue limit | Cold chain transportation requirements |
System development points
Pay special attention when building the database:
- Required elements such as Standard Number (5.1.1.2) must be 100% filled
- Conditionally required elements need to establish value range verification rules (such as Appendix A code table)
- Disclosure content mht format (5.1.4.54) must retain the original layout
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