---
kit_version: "1.0.0"
doc_id: "UMAY-DOC-10"
project_name: "UmayShop"
module: "10"
prepared_by: "compiled by example role"
content_owner: "To be assigned"
document_date: "2026-10-01"
status: "example"
language: "en"
revision_id: "en-example-r1"
source_revision_id: "example-r1"
translation_status: "machine_draft_reviewed_for_structure"
classification: "internal"
reference_eligibility: "example_only"
---

# UmayShop — 10. Database and Data Models

> Translation note: This English machine draft preserves the source example snapshot. Language, publication and verification checklist values inside the example are historical sample content, not the current availability of this prototype. No human language signoff or real system verification is implied.

> **fictional example**: The text below is used to demonstrate how to fill out the template, and is not the actual implementation, permissions, deployment, or approval conclusion of UmayShop. Fictional examples cannot enter verified reference material.

Define data models, constraints, relationships, and migration evidence, without treating code migrations as executed in production.

[Return to Main Table of Contents](../README.md) · [Unified Completion and Verification Rules](../AUTHORING-GUIDE.md)

## Table of Contents

- [Document Information](#文档信息)
- [Applicable Scope and Verification Conclusions](#适用范围与核验结论)
- [Database Purpose and Responsibilities](#数据库用途与责任)
- [Entity and Field Dictionary](#实体与字段字典)
- [Entity Relationships and Consistency](#实体关系与一致性)
- [Data Flow, Sources, and Retention](#数据流-来源与保留)
- [Migration, Backfill, and Rollback](#迁移-回填与回退)
- [Backup Recovery and Data Quality](#备份恢复与数据质量)
- [Visual Charts](#可视化图表)
- [Sources, Final Decision, and Code Verification](#来源-最终决策与代码核验)
- [Attachments and Image Resources](#附件与图片资源)
- [Manual maintenance area](#人工维护区)
- [Language and Download Checks](#语言与下载检查)
- [Revision History](#修改历史)
- [Related Documentation](#相关文档)

<a id="文档信息"></a>

## Document Information

| Field | Content to Fill |
| --- | --- |
| content owner / Confirmer | Pending assignment / unconfirmed; compiled by is not an automatic approver |
| Technical Lead / Target Deadline | Azong / 2026-10-19; template takes effect only after their confirmation |
| Template Version / Current Status | 1.0.0 / example; unreleased |
| Project / Compiled by | UmayShop / Example author role |
| Applicable Version / Environment | Example dataset r1 / fictional test environment |
| Code repository / Collection branch / Full fixed commit SHA | Real snapshot not obtained; fictional examples do not fill in fake fixed commit SHAs |
| Most recent confirmation time / Confirmation basis | Unconfirmed / Confirmation record not obtained |
| Access classification | internal: Internal; increase classification when restricted information is involved, inheriting source permissions |
| Language / source revision | zh-CN / example-r1; English and Russian not yet generated |


<a id="适用范围与核验结论"></a>

## Scope of Application and Verification Conclusion

| Item | Conclusion |
| --- | --- |
| Coverage scope | Define data models, constraints, relationships, and migration evidence, without treating code migrations as executed in production. |
| Collection exclusions | umay/cis-mep and all its subtrees are not collected, not translated, not exported, and not counted toward acceptance |
| Verified Scope | Provides fictional example entries only, private code unverified |
| Number of verified reference materials | 0; this document did not perform real Issue/source code verification |
| Evidence credibility level | Actual system conclusions: low/unknown; confirmed requirement scope: high (single user source, not code proof) |
| Limitations / Gaps | Need to supplement final decision, confirmed permissions, exact SHA, implementation location, and verification records; do not extend front-end static checks into back-end or production conclusions |


<a id="数据库用途与责任"></a>

## Database Purpose and Responsibilities

> Instructions: Instance addresses only reference Catalog 02; data responsibilities and versions are maintained here.

| Database / Model | Purpose | Technology / Version | Environment Reference | Owner | Data Classification |
| --- | --- | --- | --- | --- | --- |
| DB-DEMO | Order and shipment summary | Relational database example, version undetermined | Catalog 02 DB-NODE-DEMO | Example data role | Internal; personal data classified separately |


<a id="实体与字段字典"></a>

## Entity and Field Dictionary

> Completion instructions: List type, nullable, default, constraint, index, meaning, and source field by field; PII refers to personally identifiable information.

| Entity.Field | Type / Nullable / Default | Constraint / Index | Meaning | Sensitivity | Evidence |
| --- | --- | --- | --- | --- | --- |
| OrderDemo.id | string / No / None | Primary key | Order identifier | Internal | EXAMPLE-E10 |
| OrderDemo.customerRef | string / No / None | References example identity only | Customer reference, does not record personal plaintext | Restricted reference | EXAMPLE-E10 |
| ShipmentDemo.orderId | string / No / None | Foreign key to OrderDemo.id; indexed | Belongs to order | Internal | EXAMPLE-E10 |
| ShipmentDemo.status | string / No / CREATED | Example status enum | Logistics status, warehousing status recorded separately | Internal | EXAMPLE-E10 |
| ProcessedEventDemo.eventId | string / No / None | Unique key | Prevent duplicate events from being written repeatedly | Internal | EXAMPLE-E10 |
| ShipmentDemo.id | string / No / None | Primary Key | Shipment Identifier | Internal | EXAMPLE-E10 |
| ProcessedEventDemo.shipmentId | string / No / None | Foreign key to ShipmentDemo.id | Shipment record to which event belongs | Internal | EXAMPLE-E10 |


<a id="实体关系与一致性"></a>

## Entity Relationships and Consistency

> Fill-in instructions: Indicate one-to-many relationships, whether foreign keys actually exist, and boundaries of transactions and eventual consistency.

| Origin | Destination | Relationship | Consistency Guarantee | Deletion Behavior | Evidence |
| --- | --- | --- | --- | --- | --- |
| OrderDemo | ShipmentDemo | One-to-many example | Example database foreign key + business validation | Direct deletion of orders is prohibited if shipping records exist | EXAMPLE-E10 |
| ShipmentDemo | ProcessedEventDemo | One-to-many event example | Register result and deduplication key in the same transaction | Archive according to approved retention policy | EXAMPLE-E10 |


<a id="数据流-来源与保留"></a>

## Data Flows, Sources, and Retention

> Completion instructions: When retention periods are unclear, fill in unknown; do not copy users, phone numbers, or addresses as examples.

| Data | Source | Consumer | Retention Period / Deletion Rule | Masking Rule | Content Owner |
| --- | --- | --- | --- | --- | --- |
| Order summary | API-DEMO | Multi-client read-only query | Pending approval; this example sets no actual deadline | Customer information uses reference ID | Example data role |
| Delivery tracking | CARRIER-DEMO | Logistics display | Pending approval | Hide recipient and precise address | Example logistics role |


<a id="迁移-回填与回退"></a>

## Migration, Backfill, and Rollback

> Filling instructions: For each change, record script version, compatibility, verification, execution records, and irreversible risks.

| Migration ID | Changes | Prerequisites / Backfill | Application Compatibility | Runtime Evidence | Rollback Boundary |
| --- | --- | --- | --- | --- | --- |
| MIG-EX-01 | Add event deduplication record | Backfill strategy example undetermined | Coexistence of new and old versions requires verification | No real execution records | Existing columns/data must not be deleted before approval |


<a id="备份恢复与数据质量"></a>

## Backup, Recovery, and Data Quality

> Completion instructions: Target RPO (allowable loss time window) and RTO (recovery time upper limit) must be supported by drills.

| Check | Target | Evidence | Result | Gap |
| --- | --- | --- | --- | --- |
| Recovery drill | RPO/RTO pending approval | No real drill | Unverified | Provide backup and recovery records |
| Duplicate eventId | Unique constraint takes effect | EXAMPLE-TEST-10 | Example assertion | Requires actual database verification |


<a id="可视化图表"></a>

## Visual Diagrams

Diagrams only represent the verified scope; each key connection should be linked to a source. This is currently a fictional example and does not prove actual deployment.

### Data Model Relationships

![Data Model Relationships (Fictional Example)](../assets/data-model.svg)

[Maintainable diagram source](../assets/data-model.mmd) · [Standalone image](../assets/data-model.svg)


<a id="来源-最终决策与代码核验"></a>

## Sources, Final Decisions, and Code Verification

**Inclusion rules**: First confirm "what the final decision is", then verify "what the target version actually did". Issue closure, the latest comment, title, or "resolved" are not sufficient to pass. Same period only indicates candidate association, not that it has been implemented.

| Evidence ID | Source Type / Location | Read Snapshot / Time | Independence and Completeness | Current Status |
| --- | --- | --- | --- | --- |
| EXAMPLE-E10 | Fictional requirement specification + fictional code clues | No real snapshot | Reposts from the same source do not count as independent sources; missing attachments must be marked | example_only |

| Decision ID | Issue / Comment ID / Time | Final decision and scope of application | Confirmer and permission basis | Alternative / Conflict Record | Decision Status |
| --- | --- | --- | --- | --- | --- |
| EXAMPLE-D10 | EXAMPLE-ISSUE / EXAMPLE-NOTE / Fictional point in time | Display unknown delivery state, do not presume delivered (fictional) | No actual authorized confirmation record obtained | Actual conflict unknown | unresolved |

| Final decision ID | Repository / Branch / fixed commit SHA | Implementation file:line number / symbol | Test or verification method / result | Code status / scope | Verifier / Time | Discrepancies and formal introduction conclusion |
| --- | --- | --- | --- | --- | --- | --- |
| EXAMPLE-D10 | Not obtained, do not use fake SHA | Real implementation location not obtained | Real verification not performed | unverified / none | Unverified / unconfirmed | Must not be introduced; review after supplementing evidence |

Decision status: `unresolved` (undecided), `confirmed` (validly confirmed), `superseded` (superseded). Code status: `unverified` (unverified), `partial` (partial only), `code_verified` (supported by fixed-version code), `runtime_verified` (tested and supported in target environment). **Static code support does not equal passing production execution.**

The following must be satisfied simultaneously: the final decision has been validly confirmed, there are no unresolved conflicts, relevant code coverage is complete, evidence is locatable, and manual verification records are complete, before it can be listed as verified reference material within its verified scope. Assertions involving deployment, permissions, or the real behavior of external services additionally require operational evidence from the corresponding environment. Historical decisions are retained as history and do not impersonate current rules.

| Gap ID | Missing evidence | Impact | Supplemental Owner / Deadline | Resolution Conditions |
| --- | --- | --- | --- | --- |
| GAP-10-01 | Real final decision and code snapshot | Cannot generate verified business conclusions | To be assigned / pending confirmation | Supplement and record verifier, time, scope, and results |


<a id="附件与图片资源"></a>

## Attachments and Image Resources

| Resource ID | Source / Ownership | Local Relative Path | Integrity / Read Status | Permission Boundary | Language Processing |
| --- | --- | --- | --- | --- | --- |
| data-model | This package tools/diagram_assets.py (local diagram structure definition) | ../assets/data-model.svg + .mmd | Locally generated; XML verifiable | internal / no external download | Chinese text within diagram not translated; currently only Chinese diagram available |

Attachments must record the original file URL, file name, content checksum, read time, and access classification; access tokens or signed temporary URLs must not be saved. That a link can be opened does not mean the body has been read. Redirection to a login page, corruption, encryption, or unrecognized scans are all marked as unread. Converted text must link to original documents and images, without overwriting the originals.


<a id="人工维护区"></a>

## Manual Maintenance Area

<!-- MANUAL:START -->
To be filled: explanations, exceptions, and operational notes confirmed by the person in charge. Subsequent automatic updates must preserve this section; submit diffs when conflicting with new evidence, and do not silently delete. This initialization script will not update existing content.
<!-- MANUAL:END -->


<a id="语言与下载检查"></a>

## Language and Download Checks

| Check Item | Current Status / Requirement |
| --- | --- |
| Chinese source | This page is in Chinese; source revision fixed by revision_id |
| English / Russian | Not generated. Subsequent automated translations bind to Chinese source revision (source_revision_id); after the source text is updated, old translations are marked as stale |
| Content structure | Translation preserves heading hierarchy, table of contents, tables, code, links, fields, and numerical values; terminology follows the project glossary |
| Images and In-Image Text | Original images and local assets are retained; Chinese text inside images must be separately remade or provided with translation notes; untranslated images are not counted as complete translations |
| Markdown download | When images are included, download as a ZIP containing Markdown + assets + resource manifest; must not provide only invalid remote links |
| PDF Download | Platform must implement pagination, table of contents/bookmarks, tables, Chinese/English/Russian fonts, and local image embedding; missing images should block complete success |
| Export and permissions | Bind document revision, language, image version, and template version; inherit source permissions and do not disclose restricted content |
| Package capability boundary | Only generates Markdown document tree and local diagram source/SVG; does not perform translation, PDF rendering, login, or platform publishing |


<a id="修改历史"></a>

## Revision History

| Revision | Date | Compiled by | Changes | Confirmation / Basis |
| --- | --- | --- | --- | --- |
| example-r1 | 2026-10-01 | Compiled by example role | Initialize fictional example | Unconfirmed / Template 1.0.0 |


<a id="相关文档"></a>

## Related Documents

- [02. Infrastructure, Domain Names, IPs, and Access Permissions](../02-infrastructure/README.md)
- [03. Backend / Backend Service](../03-backend/README.md)
- [09. API / Interfaces and System Integration](../09-api-integrations/README.md)
- [11. Security and Access Permission Management](../11-security-access/README.md)
- [13. Deployment and Version Release Notes](../13-deployment-releases/README.md)