# Database Migration - Status Summary

**Last Updated:** 2025-11-25
**Current Phase:** Phase 2 COMPLETE, Phase 3 PLANNED

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## Migration Status

| Phase | Status | Description | Completed |
|-------|--------|-------------|-----------|
| **Phase 1** | COMPLETE | Schema changes (tables, columns, indexes) | Nov 6, 2025 |
| **Phase 2** | COMPLETE | PC migration to machines table | Nov 10, 2025 |
| **Phase 3** | COMPLETE | Network devices - legacy tables dropped | Nov 25, 2025 |

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## Phase 1: Schema Changes (COMPLETE)

**Completed:** November 6, 2025

### New Tables Created (7)
1. `comstypes` - Communication types (IP, Serial, etc.)
2. `communications` - Unified network interfaces
3. `warranties` - Warranty tracking
4. `compliance` - Compliance tracking
5. `compliancescans` - Scan history
6. `relationshiptypes` - Relationship type definitions
7. `machinerelationships` - Machine-to-machine relationships

### Tables Modified (2)
1. `machines` - Added 11 columns (hostname, serialnumber, osid, pctypeid, etc.)
2. `businessunits` - Added liaison fields

### Tables Renamed
- `pcstatus` → `machinestatus`

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## Phase 2: PC Migration (COMPLETE)

**Completed:** November 10, 2025

### Data Migrated
- **277 PCs** migrated from `pc` table → `machines` table
- **705+ network interfaces** → `communications` table
- **Dualpath relationships** → `machinerelationships` table
- **PC→Equipment relationships** → `machinerelationships` table

### Schema Changes
- PCs identified by `pctypeid IS NOT NULL` in machines table
- Network interfaces use `communications.address` field
- Relationships use `machinerelationships` table

### Pages Updated
- displaypcs.asp, displaypc.asp, editpc.asp
- displaymachines.asp, displaymachine.asp
- network_map.asp, network_devices.asp
- All save/update device pages

### API Fixes
- Fixed 36+ IIf() bugs in api.asp
- Fixed PC→Machine relationship creation
- PowerShell data collection fully working

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## Phase 3: Network Devices (COMPLETE)

**Completed:** November 25, 2025

### What Happened
- Legacy tables were essentially empty (only 3 servers had data)
- Network devices were already being added directly to `machines` table
- Dropped all legacy network device tables

### Tables Dropped
- `servers` (3 records - not migrated, stale data)
- `switches` (empty)
- `cameras` (empty)
- `accesspoints` (empty)
- `idfs` (empty)

### Current Network Device Types in machines Table
| machinetypeid | Type |
|---------------|------|
| 16 | Access Point |
| 17 | IDF |
| 18 | Camera |
| 19 | Switch |
| 20 | Server |

### Printers
- Stay in separate `printers` table (by design - unique fields, workflows)

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## Current Architecture

```
machines table (unified)
├── Equipment (machinetypeid 1-24, pctypeid IS NULL)
├── PCs (machinetypeid 25-29, pctypeid IS NOT NULL)
└── [Future] Network Devices (machinetypeid 30-36)

printers table (separate)

communications table (all network interfaces)

machinerelationships table (all relationships)
```

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## Key Queries

```sql
-- All PCs
SELECT * FROM machines WHERE pctypeid IS NOT NULL;

-- All Equipment (non-PC)
SELECT * FROM machines WHERE pctypeid IS NULL;

-- PCs with network info
SELECT m.hostname, m.serialnumber, c.address
FROM machines m
LEFT JOIN communications c ON m.machineid = c.machineid
WHERE m.pctypeid IS NOT NULL;

-- PC → Equipment relationships
SELECT
    pc.hostname AS pc_name,
    eq.machinenumber AS equipment_name
FROM machinerelationships mr
JOIN machines pc ON mr.machineid = pc.machineid
JOIN machines eq ON mr.related_machineid = eq.machineid
JOIN relationshiptypes rt ON mr.relationshiptypeid = rt.relationshiptypeid
WHERE rt.relationshiptype = 'Controls';
```

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## Deprecated Tables (Phase 2)

These tables are deprecated but kept for rollback safety:

- `pc` → Use `machines WHERE pctypeid IS NOT NULL`
- `pc_network_interfaces` → Use `communications`
- `pc_comm_config` → Use `communications`
- `pc_dualpath_assignments` → Use `machinerelationships`
- `pcstatus` → Use `machinestatus`

**Recommendation:** Drop after 30 days of stable operation

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## Related Documentation

- [DATABASE_MIGRATION_FINAL_DESIGN.md](DATABASE_MIGRATION_FINAL_DESIGN.md) - Phase 1 spec
- [PC_MACHINES_CONSOLIDATION_PLAN.md](PC_MACHINES_CONSOLIDATION_PLAN.md) - Phase 2 plan
- [PHASE3_NETWORK_DEVICES_MIGRATION_PLAN.md](PHASE3_NETWORK_DEVICES_MIGRATION_PLAN.md) - Phase 3 plan
- [MIGRATION_QUICK_REFERENCE.md](MIGRATION_QUICK_REFERENCE.md) - Quick lookup

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**Last Updated:** 2025-11-25
