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thptqg/2016/docs/project-overview-pdr.md
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# Project Overview — thptqg2016
## Goal
Provide a public lookup tool for Vietnam's 2016 National High School Graduation Exam scores (877,461 candidates), running entirely on the client, hosted for free on GitHub Pages.
## Scope
- Lookup by exam ID or full name (with Vietnamese diacritics handling)
- Read-only SQL queries against a single `student` table
- Static dataset — no updates (the 2016 exam is long over)
## Target users
- Former 2016 candidates checking their scores
- Education researchers / data journalists running aggregate stats
- Developers exploring SQL on a real-world dataset
## Constraints
- **Zero backend**: the full DB (tens of MB gzipped) is downloaded to the browser
- **Read-only**: INSERT/UPDATE/DELETE rejected to avoid the illusion that user edits persist
- **Row caps**: 100 rows (lookup), 1000 rows (SQL) to prevent browser hangs
- **Vietnamese-first UI**: app labels and data are Vietnamese; documentation is English
## Data sources
Excel files (`.xlsx`/`.xls`) collected from newspapers and exam clusters in 2016, stored in `data/`. One file per cluster, with several different column layouts (see `scripts/build-database.js`).
Original aggregator link: <https://dtntbacgiang.edu.vn/tin-tuc/tin-tuc-su-kien/cong-bo-diem-thi-thptqg-2016-toan-bo-120-cum-thi-da-co-diem.html> — no longer accessible, so the raw Excel files are mirrored in this repo under `data/`.
## Status
Stable. Data is frozen. Recent work focuses on UX polish (dark mode, accessibility, diacritics-insensitive search).