| Record | What it holds | What depends on it |
| Client | A person or household: contact details, preferences, communications, inquiries, booking history, travel credits, survey results | Bookings, custom quotes, marketing lists, guest portal access |
| Vendor and product | A supplier and what it sells: contacts, contract terms by season, payment and cancellation policy, currency, products with rates and inventory, content and images | Quotes, bookings, segments, vendor payables, itineraries, the website |
| Trip | The product template: code, duration, inventory model, seasons and pricing, itinerary content, documents and forms, task schedule, web publishing | Departures, bookings, the website |
| Departure | One operated instance of a trip: date, capacity and allotments, waitlist, bookings, guides, budget, vendor services, communications, reports | Bookings, rooming lists and manifests, vendor payables, profitability |
| Booking | One sale: passengers, segments, payment schedule, receipts, air itinerary, documents, communications, tasks, change history | Departure counts, receivables, guest portal, agency commissions |
| Segment | One service inside a booking or proposal: vendor, dates, quantity, net cost and price, confirmation status and number, cancellation deadline | Vendor confirmations and payments, vouchers, itineraries, manifests |
| Custom quote and proposal | A custom trip in development: contact, proposal versions, day-by-day segments, target margin, package pricing, planning fee, documents | The booking it converts to |
| Agency and agent | A travel agency and its agents: identifiers, consortium, commission rules by travel date, statements, portal access | Commissioned bookings, agency statements, agent portal pricing |