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+# RobotNet10.MapManager
+
+## Overview
+
+Entity Framework Core module for managing AGV/AMR maps according to **VDMA LIF (Layout Interchange Format) 1.0.0** standard.
+
+## Status
+
+✅ **Phase 1 Complete: Database Foundation**
+- [x] Entity classes generated (10 entities)
+- [x] DbContext created with full configurations
+- [x] EF Core packages installed (v9.0.0)
+- [x] Design documentation finalized
+
+## Entity Classes
+
+### Hierarchy (Layout → Version → Level)
+
+1. **Layout.cs** - Root entity (Building/Facility)
+2. **LayoutVersion.cs** - Version history
+3. **LayoutLevel.cs** - Floors/Levels
+
+### Master Data
+
+4. **VehicleType.cs** - Vehicle types (AMR-T800, etc.)
+
+### Map Elements
+
+5. **Node.cs** - Waypoints (VDMA LIF compliant)
+6. **Edge.cs** - Paths (with EdgeName/EdgeDescription extensions)
+7. **Station.cs** - Interaction points
+
+### Junction Tables
+
+8. **StationInteractionNode.cs** - Station ↔ Node mapping
+9. **NodeVehicleProperty.cs** - Node × VehicleType properties
+10. **EdgeVehicleProperty.cs** - Edge × VehicleType properties
+
+### Database Context
+
+- **MapDbContext.cs** - EF Core DbContext with all configurations
+
+## Key Features
+
+### VDMA LIF Compliance
+
+- ✅ 100% adherence to lif-schema.json
+- ✅ Proper JSON serialization for import/export
+- ✅ Support for vehicleTypeNodeProperties and vehicleTypeEdgeProperties
+
+### Version Control
+
+- ✅ Multiple versions per layout
+- ✅ Only ONE active version per layout
+- ✅ Active version is READ-ONLY
+
+### Multi-Level Support
+
+- ✅ Multiple levels (floors) per version
+- ✅ LevelOrder for flexible sorting
+- ✅ Each level exports as separate layout entry in JSON
+
+### VehicleType Customization
+
+- ✅ Per-vehicle properties for nodes and edges
+- ✅ Actions stored as JSON in NodeVehicleProperties
+- ✅ NURBS trajectory support in EdgeVehicleProperties
+
+## Database Schema
+
+```
+Layouts (10 tables)
+├── Layouts → LayoutVersions → LayoutLevels
+├── VehicleTypes
+├── Nodes (with NodeVehicleProperties)
+├── Edges (with EdgeVehicleProperties)
+└── Stations (with StationInteractionNodes)
+```
+
+**Total Indexes:** ~25 (PKs, FKs, composite indexes)
+
+## Next Steps
+
+### Phase 2: Migrations
+
+```bash
+# Add EF Core tools (if not installed)
+dotnet tool install --global dotnet-ef
+
+# Create initial migration
+dotnet ef migrations add InitialCreate --project srcs/RobotNet10/Commons/RobotNet10.MapManager
+
+# Update database
+dotnet ef database update --project srcs/RobotNet10/Commons/RobotNet10.MapManager
+```
+
+### Phase 3: Import/Export Services
+
+- [ ] Create VDMA LIF JSON models
+- [ ] Implement Export service (DB → JSON)
+- [ ] Implement Import service (JSON → DB)
+- [ ] Validation against lif-schema.json
+
+### Phase 4: Integration
+
+- [ ] API endpoints for MapEditor
+- [ ] Version management
+- [ ] VehicleType management
+
+## Documentation
+
+- **DATABASE_DESIGN.md** - Complete schema documentation
+- **docs/MapEditor/V2-DangNV/DATABASE_DESIGN_DISCUSSION.md** - Design discussion summary
+- **lif-schema.json** - VDMA LIF JSON schema reference
+
+## Configuration
+
+### Connection Strings
+
+**SQL Server:**
+```json
+"ConnectionStrings": {
+  "MapManagerDb": "Server=localhost;Database=RobotNetMaps;Trusted_Connection=True;TrustServerCertificate=True;"
+}
+```
+
+**SQLite:**
+```json
+"ConnectionStrings": {
+  "MapManagerDb": "Data Source=robotnet_maps.db"
+}
+```
+
+### Program.cs
+
+```csharp
+using Microsoft.EntityFrameworkCore;
+using RobotNet10.MapManager.Data;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add MapDbContext
+builder.Services.AddDbContext<MapDbContext>(options =>
+    options.UseSqlServer(builder.Configuration.GetConnectionString("MapManagerDb"))
+    // or options.UseSqlite(builder.Configuration.GetConnectionString("MapManagerDb"))
+);
+
+var app = builder.Build();
+app.Run();
+```
+
+## Scale Targets
+
+- 50 Layouts
+- 10 Versions per Layout
+- 10 Levels per Version
+- 1,000 Nodes per Level
+- 999 Edges per Level
+- 10 VehicleTypes
+
+**Total:** ~5M Nodes, ~5M Edges
+
+## Performance Optimizations
+
+- ✅ Strategic indexing (25+ indexes)
+- ✅ Designed for partitioning (by LayoutId or LevelId)
+- ✅ Caching strategy identified
+- ✅ Pagination support planned
+
+## References
+
+- **VDMA LIF Specification:** FuI_Guideline_LIF_GB_final.pdf
+- **Entity Framework Core:** https://docs.microsoft.com/ef/core/
+- **VDMA LIF Schema:** lif-schema.json
+
+---
+
+**Version:** 1.0  
+**Date:** 2024-11-26  
+**Status:** Phase 1 Complete ✅
+