julian
58d8f06ba0
Ingest the predecessor SQL Server schema (raw + source summary) and file design pages for time-of-day/seasonal tariff tiers and merchant validation/postpaid sponsorship. Cross-link tariff.md and validation-discounts.md. No code.
88 lines
5.5 KiB
Markdown
88 lines
5.5 KiB
Markdown
---
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type: source
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tags: [parking, legacy, pricing, schema, fiscalization]
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sources: [parksql2017-legacy-schema]
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updated: 2026-06-17
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---
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# ParkSQL2017 — Legacy Parking System Schema (source summary)
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A SQL Server 2017 schema dump (`raw/parksql2017-legacy-schema.sql`, scripted 2024-10-07) of an
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**existing/predecessor parking system** in the same Albanian market this project targets. It is the
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single most concrete reference we have for how the prior generation modelled **tariffs, discounts,
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memberships, sessions, shifts, and fiscalization** — a real, deployed data model rather than vendor
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marketing. Treat it as evidence of what worked and what to improve, not as a spec to copy (it has
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clear anti-patterns, e.g. money as `float`).
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> Albanian-context tells: `BA_TicketFisc.nivf` (NIVF fiscalization code), the `Cupons` spelling,
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> `LostPrice1..4` tiers. `BA_` = business-app table prefix; `SYS_` = system/auth tables.
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## Table map (24 tables)
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**Pricing / tariff**
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- **`BA_TicketPrice`** — the rate-card *header*. Key fields: `Code`, `Name`, `TicketCategoryID`,
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`ParkID`, **`ValidFrom`/`ValidTo`** (date window), **`ValidFromHour`/`ValidToHour`** (time-of-day
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window), `FixedPrice` (flat option), `IntervalType` (2-char unit, e.g. MI/HR/DY), `Interval`
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(increment size), **`LostPenalty`**, `IsDefault`, `IsActive`. → A rate card is scoped by
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**(category × date-range × hour-range)**. This is the **happy-hour / time-of-day mechanism**.
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- **`BA_TicketPriceHours`** — the *stepped ladder* (child of TicketPrice): rows of
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`HourFrom`, `HourTo`, `Price`. → equivalent to this project's tariff `blocks[]`.
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- **`BA_TicketCategory`** — vehicle/customer category (`Code`, `Name`, `IsDefault`,
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`IntervalChange`). → a **pricing axis by category** the current model lacks.
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- **`BA_TicketFisc`** — `TicketID` → `nivf` (Albanian fiscalization code per ticket).
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**Discounts / validation**
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- **`BA_Cupons`** — `CODE`, **`DiscMinutes`** (discount as *free minutes*), `IsUsed`, `LastUsed`,
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`IsPrinted`. → validation = a **single-use coupon code worth N free minutes**; reconciled by
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counting used codes (**prepaid** model, no merchant account/ledger).
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**Sessions**
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- **`BA_ParkRecords`** — the transient parking session (ticket cars). Carries lifecycle
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(`InTime`/`OutTime`/`ExitTime`, `In/Out Mode/Addr/OperatorID`, `In/Out ShiftID`), money
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(`OrgCharge`, `Charge`, `Discount`, `FreeMin`, `IsPaid`), **discount detail** (`DiscMinutes`,
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`DiscType` smallint, `DisTicketSerial`), entry/exit plate+image columns, and
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`ManualOpenReason` / `ExpiredTime/DateApproval` audit fields.
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- **`BA_MembersCheckINOUT`** — per-event check-in/out log for *members* (cards), separate from
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ticket sessions.
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- **`BA_ManualCheckINOUT`** — every manual barrier open, with `Reason` + `OperatorID` + image.
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**Memberships (≈ this project's permits)**
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- **`BA_Members`** — the member (card+plate identity, contact, `isVIP`).
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- **`BA_Memberships`** — an issued subscription: `PlanID`, `StartDate`/`EndDate`, `Price`,
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`CalculatedPrice`, `Paid`, `AllowedDays`.
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- **`BA_MembershipPlans`** — plan template: `Type`, `Duration`, `Price`, **`ActiveDays`**.
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- **`BA_MembershipPlansTime`** — **`StartTime`/`EndTime`** windows per plan → memberships valid only
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in specific **hours** (commuter/day-shift permits).
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**Site / ops / auth**
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- **`BA_Park`** — a lot: capacity (`ParkingPlaces`/`FreePlaces`), LED sign addr, default ticket/lost
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category codes, **`FreeMinutes`**, `DiscMinutesTicket`, `DiscMinutesApp`, **`LostPrice1..4`**.
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- **`BA_Shifts`** — cashier shift / Z-report: open/close, `Charged`, `TicketCharges`,
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`CardCharges`, entry/exit + manual counts, **`Reconciled`**, `UserID`, `MachineID`.
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- **`BA_CashRegister`**, `SYS_Configs` (company/fiscal/ticket header+footer, `AllowTimeExeed`,
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`ImageDays`), `SYS_User`/`SYS_Role`/`SYS_Rights`/`SYS_UserRights`, `SYS_Controls`,
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`SYS_Language` (DB-driven i18n).
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## What it confirms for our design
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1. **Stepped ladder** — `BA_TicketPriceHours` (HourFrom/HourTo/Price) ≈ our `blocks[]`. Good signal.
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2. **Per-rate lost penalty** + site-level lost tiers (`LostPrice1..4`) ≈ our `lostTicketMinor` (+ the
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admin-override idea).
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3. **Typed discount on the session record** (`DiscType`) ≈ the research's "typed validation modifier."
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4. **Manual-open + reason logging at the schema level** ≈ our [[threat-model|operator-as-adversary]] audit need.
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## What it adds (genuinely new vs. our current model)
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1. **Time-of-day + date windows on the rate card** (`ValidFromHour`/`ValidToHour`,
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`ValidFrom`/`ValidTo`) — the shipped way to do **happy hour / seasonal**. See [[tariff-time-tiers]].
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2. **Vehicle/customer category as a pricing axis** (`BA_TicketCategory`). See [[tariff-time-tiers]].
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3. **Time-/day-restricted memberships** (`MembershipPlansTime`, `ActiveDays`) — a [[permit]] gap.
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## Anti-patterns to NOT copy
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- **Money as `float`** everywhere (`Charge`, `Price`, `LostPenalty`) — drifts across a revenue
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ledger. Our integer-minor-units rule is the deliberate fix. (rejected alternative)
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- **Mutable rate rows** (`Updated`/`UpdatedBy` in place) — a past session can't reliably reprice
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against the rate then in force. Our immutable effective-dated [[tariff]] versions fix this.
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- **No merchant/sponsor account or postpaid ledger** — only prepaid printed coupons. The B2B
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postpaid case is net-new; see [[validation-sponsorship]].
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- **Images stored as `image` BLOBs in-row** — we keep snapshot *bytes* out of the event row and
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store a reference instead ([[append-only-event-chain]]).
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