Refactored DB Schema: Added Fundamental Columns to Section and File Tables

[ZeyadAbbas]

Closes #45

What changed

• File table

  • Split metadata: added fileTitle, fileName
  • Added publishDate, edited flag, likes, saves, createdAt, editedAt
  • Enforced nonnegative counters with CHECKs
  • Author FK now cascades on delete, section FK sets null
  • Unique index on (authorId, fileTitle)
  • Indexes on authorId, sectionId, publishDate
  • Kept id as nanoid(20) varchar

• Section table

  • Introduced prefix, number, sectionCode, term enum, year, professor, numberOfNotes
  • Added createdAt and updatedAt
  • New primary key format: id is nanoid(6) varchar
  • Composite uniqueness on (prefix, number, sectionCode, term, year)
  • Indexes for common filters: by course, professor, semester

Rationale

• Faster lookups and deduping with explicit indexes and composite unique keys
• Better UX for listing and searching files and sections
• Safer counters via CHECK constraints

Migration notes

• Section id changed from text(20) to varchar(6). Existing data will need a mapping:
  1. Create new section ids and a mapping table old_id -> new_id
  2. Update file.section_id using the mapping
  3. Drop old constraints and recreate with new types

How I tested

• Generated and applied Drizzle migrations locally

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Project	Deployment	Preview	Comments	Updated (UTC)
utd-notebook	Ready	Preview	Comment	Nov 5, 2025 1:39am