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Zhongwei Li
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# Ontological Documentation Templates
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This document provides standardized templates for creating comprehensive ontological documentation for software systems.
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## Core Documentation Templates
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### 1. Concept Definition Template
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```markdown
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# [Concept Name]
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## Quick Reference
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- **Type**: [Entity/Value Object/Service/Repository/etc.]
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- **Category**: [Domain/Business/Infrastructure/etc.]
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- **Status**: [Active/Deprecated/Experimental]
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- **Owner**: [Team/Person responsible]
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## Definition
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[Clear, concise definition of the concept. What is it? What purpose does it serve?]
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## Purpose and Scope
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**Why this concept exists:**
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- [Problem it solves]
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- [Business requirement it addresses]
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- [Technical necessity]
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**Scope and Boundaries:**
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- [What's included]
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- [What's excluded]
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- [Related but separate concepts]
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## Characteristics
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### Essential Properties
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- **Property 1**: [Description] - [Type] - [Constraints]
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- **Property 2**: [Description] - [Type] - [Constraints]
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### Behavioral Aspects
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- **Action 1**: [Description] - [Preconditions] - [Postconditions]
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- **Action 2**: [Description] - [Preconditions] - [Postconditions]
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### Constraints and Rules
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- [Business rule 1]
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- [Validation rule 2]
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- [Integrity constraint 3]
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## Relationships
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### Hierarchical Relationships
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- **Is-A**: [Parent Concept] - [Rationale]
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- **Has-A**: [Child Components] - [Composition details]
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### Dependency Relationships
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- **Depends-On**: [Required Concept] - [Dependency type]
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- **Required-By**: [Dependent Concept] - [Usage context]
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### Association Relationships
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- **Associates-With**: [Related Concept] - [Nature of association]
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- **Similar-To**: [Analogous Concept] - [Comparison points]
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## Implementation
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### Code Representation
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```python
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# Example implementation
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class [ConceptName]:
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def __init__(self):
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self.property1 = None
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self.property2 = None
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```
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### Data Structure
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- **Storage Format**: [Database table, JSON, etc.]
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- **Serialization**: [How it's represented in API/transport]
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- **Persistence**: [Where and how it's stored]
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### Lifecycle
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- **Creation**: [How instances are created]
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- **Evolution**: [How instances change over time]
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- **Deletion**: [How instances are removed]
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## Examples
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### Concrete Examples
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1. **Example 1**: [Specific instance with explanation]
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- [Context]
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- [Properties]
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- [Behavior]
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2. **Example 2**: [Another specific instance]
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- [Context]
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- [Properties]
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- [Behavior]
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### Usage Patterns
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- **Pattern 1**: [Common usage scenario]
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- **Pattern 2**: [Another usage scenario]
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## Evolution and History
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- **Created**: [Date] - [Initial reason]
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- **Major Changes**: [Change history]
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- **Future Roadmap**: [Planned modifications]
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## Related Documentation
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- [Link to related concepts]
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- [Link to implementation details]
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- [Link to API documentation]
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- [Link to user documentation]
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```
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### 2. Relationship Documentation Template
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```markdown
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# [Relationship Type]: [Source Concept] → [Target Concept]
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## Relationship Overview
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- **Type**: [Is-A/Part-Of/Depends-On/Associates-With/etc.]
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- **Source**: [Source Concept Name]
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- **Target**: [Target Concept Name]
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- **Strength**: [Strong/Medium/Weak]
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- **Direction**: [Unidirectional/Bidirectional]
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## Definition
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[Clear explanation of what this relationship means in the domain context]
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## Rationale
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**Why this relationship exists:**
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- [Business reason]
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- [Technical necessity]
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- [Domain modeling decision]
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## Characteristics
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### Cardinality
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- **Source → Target**: [One-to-One/One-to-Many/Many-to-Many]
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- **Minimum**: [Required/Optional - specify minimum]
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- **Maximum**: [Unbounded/Specific limit]
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### Constraints
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- **Existence Constraint**: [Rules about when relationship can exist]
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- **Deletion Constraint**: [What happens when one end is deleted]
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- **Update Constraint**: [How relationship changes are handled]
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### Semantic Properties
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- **Transitivity**: [Whether relationship is transitive]
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- **Symmetry**: [Whether relationship is symmetric]
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- **Reflexivity**: [Whether relationship is reflexive]
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## Implementation
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### Code Representation
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```python
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# Example implementation
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class SourceConcept:
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def __init__(self):
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self.target_concepts = [] # Relationship implementation
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```
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### Data Modeling
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- **Foreign Keys**: [How relationship is stored in database]
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- **Join Tables**: [If applicable, for many-to-many relationships]
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- **Indexing**: [Performance considerations]
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### API Representation
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- **REST Endpoints**: [How relationship is exposed in API]
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- **GraphQL Schema**: [How relationship appears in GraphQL]
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- **Serialization**: [How relationship is represented in JSON/XML]
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## Examples
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### Example Instances
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1. **Example 1**: [Specific relationship instance]
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- **Source Instance**: [Details]
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- **Target Instance**: [Details]
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- **Context**: [When and why this exists]
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2. **Example 2**: [Another specific instance]
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- **Source Instance**: [Details]
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- **Target Instance**: [Details]
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- **Context**: [When and why this exists]
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### Usage Patterns
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- **Creation Pattern**: [How relationships are established]
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- **Query Pattern**: [How relationships are accessed]
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- **Modification Pattern**: [How relationships are changed]
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## Validation Rules
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### Business Rules
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- [Rule 1]: [Description and validation logic]
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- [Rule 2]: [Description and validation logic]
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### Technical Constraints
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- [Constraint 1]: [Technical limitation or requirement]
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- [Constraint 2]: [Performance or scalability consideration]
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## Related Documentation
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- [Source Concept Documentation]
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- [Target Concept Documentation]
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- [Related Relationships]
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- [Implementation Details]
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```
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### 3. Domain Model Overview Template
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```markdown
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# [Domain Name] Domain Model
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## Executive Summary
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[Brief overview of the domain and its core concepts]
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## Core Concepts Map
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[Visual representation or hierarchical list of main concepts]
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### Primary Entities
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- **[Entity 1]**: [Brief description]
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- **[Entity 2]**: [Brief description]
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- **[Entity 3]**: [Brief description]
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### Supporting Concepts
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- **[Value Object 1]**: [Brief description]
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- **[Service 1]**: [Brief description]
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- **[Repository 1]**: [Brief description]
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## Concept Hierarchy
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```
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[Top-level concepts]
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├── [Category 1]
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│ ├── [Sub-concept 1.1]
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│ ├── [Sub-concept 1.2]
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│ └── [Sub-concept 1.3]
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├── [Category 2]
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│ ├── [Sub-concept 2.1]
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│ └── [Sub-concept 2.2]
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└── [Category 3]
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├── [Sub-concept 3.1]
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└── [Sub-concept 3.2]
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```
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## Key Relationships
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### Critical Relationships
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1. **[Relationship 1]**: [Source] → [Target]
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- [Importance and impact]
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- [Business significance]
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2. **[Relationship 2]**: [Source] → [Target]
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- [Importance and impact]
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- [Business significance]
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### Relationship Patterns
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- **Composition Pattern**: [Description]
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- **Dependency Pattern**: [Description]
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- **Association Pattern**: [Description]
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## Business Rules and Constraints
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### Domain Rules
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1. **[Rule 1]**: [Description] - [Impact]
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2. **[Rule 2]**: [Description] - [Impact]
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### Invariants
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- **Invariant 1**: [What must always be true]
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- **Invariant 2**: [What must always be true]
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## Processes and Workflows
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### Core Business Processes
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1. **[Process 1]**
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- **Trigger**: [What starts the process]
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- **Steps**: [Sequence of actions]
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- **Actors**: [Who/what participates]
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- **Outcomes**: [Results and side effects]
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2. **[Process 2]**
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- **Trigger**: [What starts the process]
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- **Steps**: [Sequence of actions]
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- **Actors**: [Who/what participates]
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- **Outcomes**: [Results and side effects]
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### State Machines
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- **[Entity 1] States**: [State transitions and conditions]
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- **[Entity 2] States**: [State transitions and conditions]
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## Integration Points
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### External Systems
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- **[System 1]**: [Integration type and purpose]
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- **[System 2]**: [Integration type and purpose]
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### Data Flows
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- **Inbound Data**: [What data comes from where]
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- **Outbound Data**: [What data goes to where]
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## Evolution Strategy
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### Current State
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- [Description of current domain model state]
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### Planned Changes
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- **[Change 1]**: [Description and timeline]
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- **[Change 2]**: [Description and timeline]
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### Migration Strategy
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- [How to transition from current to future state]
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## Quality Metrics
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### Model Health
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- **Complexity**: [Assessment of model complexity]
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- **Consistency**: [How consistent the model is]
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- **Completeness**: [Gaps and coverage]
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### Usage Metrics
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- **Most Used Concepts**: [Statistics on concept usage]
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- **Relationship Density**: [How interconnected concepts are]
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- **Change Frequency**: [How often concepts change]
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## Related Documentation
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- [Link to detailed concept documentation]
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- [Link to API documentation]
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- [Link to business requirements]
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- [Link to technical architecture]
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```
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### 4. Ontology Change Log Template
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```markdown
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# Ontology Change Log
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## Version [Version Number] - [Date]
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### Summary
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[Brief overview of changes in this version]
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### Added Concepts
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- **[Concept Name]**: [Reason for addition] - [Impact]
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- **[Concept Name]**: [Reason for addition] - [Impact]
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### Modified Concepts
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- **[Concept Name]**: [Changes made] - [Reason for change] - [Impact]
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- **[Concept Name]**: [Changes made] - [Reason for change] - [Impact]
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### Removed Concepts
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- **[Concept Name]**: [Reason for removal] - [Migration strategy]
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### Added Relationships
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- **[Relationship]**: [Source] → [Target] - [Reason]
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### Modified Relationships
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- **[Relationship]**: [Source] → [Target] - [Changes] - [Reason]
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### Removed Relationships
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- **[Relationship]**: [Source] → [Target] - [Reason] - [Impact]
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### Breaking Changes
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- **[Change Description]**: [Impact on dependent systems] - [Migration required]
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### Migration Guide
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[Step-by-step guide for adapting to these changes]
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## Previous Versions
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[Link to previous change logs]
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```
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## Specialized Templates
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### API Ontology Template
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```markdown
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# [API Name] Ontology
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## Resource Model
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[List of all resources and their relationships]
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## Semantic Operations
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[CRUD operations and their domain meanings]
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## Media Types
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[Content types and their semantic significance]
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## Hypermedia Controls
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[HATEOAS relationships and link semantics]
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```
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### Database Schema Ontology Template
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```markdown
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# [Database Name] Schema Ontology
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## Table Concepts
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[Tables as domain concepts]
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## Column Semantics
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[Columns as concept properties]
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## Constraint Logic
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[Constraints as business rules]
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## Trigger Semantics
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[Triggers as automated processes]
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```
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### Event-Driven Architecture Ontology Template
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```markdown
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# [System Name] Event Ontology
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## Event Taxonomy
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[Categorization of all events]
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## Event Relationships
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[Causal and temporal relationships]
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## Event Semantics
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[Meaning and significance of events]
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## Process Integration
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[How events drive business processes]
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```
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## Template Usage Guidelines
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### When to Use Each Template
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1. **Concept Definition**: Use for every significant domain concept
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2. **Relationship Documentation**: Use for critical or complex relationships
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3. **Domain Model Overview**: Use for bounded contexts or major domains
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4. **Change Log**: Use for every ontology modification
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5. **Specialized Templates**: Use for specific architectural patterns
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### Quality Checklist
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For each documentation entry:
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- [ ] Definition is clear and unambiguous
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- [ ] Purpose and scope are well-defined
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- [ ] Relationships are accurately described
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- [ ] Examples are relevant and illustrative
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- [ ] Implementation details are correct
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- [ ] Related documentation is linked
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- [ ] Review date is recorded
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- [ ] Owner is identified
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### Review Process
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1. **Self-Review**: Check completeness and accuracy
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2. **Peer Review**: Get feedback from other developers
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3. **Domain Expert Review**: Validate with domain experts
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4. **Architecture Review**: Ensure alignment with system architecture
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5. **Documentation Review**: Check for clarity and usability
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