---
title: Relational Algebra
tags: NTNU, CSIE, 必修, Database Theories
---

### Table
| Operation | Notation | SQL | Defined | Note |
| ------------------ | -------- | --- | ------- | ---- |
| Selection | | | | |
| Project | | | | |
| Union | | | | |
| Set different | | | | |
| Cartesian-Product | | | | |
| Nature Join | | | | |
| Theta Join | | | | |
| Left Outer Join | | | | |
| Right Outer Join | | | | |
| Full Outer Join | | | | |
| Aggregate Function | | | | |