# Data Dictionary

Document known tables, fields, relationships, and legacy aliases here as they are discovered.

## Example Entry
### Table: Orders
- Fields: OrderID (PK), CustomerID (FK), OrderDate, Status
- Known dependents: InvoiceReport.asp, OrderExport.php
- Notes: Legacy field `Cust_ID` renamed to `CustomerID` in 2019 migration; some old queries may still reference the old name.