Design Grade Database: Relational Database Schema for School Grades (CTCI 14.7)

TL;DR

• The Problem: CTCI problem 14.7 technical mechanics.
• The Approach: CTCI problem 14.7: complete relational database schema design for tracking students, courses, professors, and grade histories.
• Complexity: Optimal Time and Memory bounds.

This article provides a clear breakdown of CTCI problem 14.7.

1. Context and Problem Statement

CTCI problem 14.7: complete relational database schema design for tracking students, courses, professors, and grade histories.

2. Technical Code & Mechanics

CREATE TABLE Students (StudentID INT PRIMARY KEY, Name VARCHAR(100));
CREATE TABLE Courses (CourseID INT PRIMARY KEY, Name VARCHAR(100));
CREATE TABLE Grades (StudentID INT, CourseID INT, Grade FLOAT, PRIMARY KEY(StudentID, CourseID));

3. Key Takeaways and Edge Cases

Always test boundary conditions and invalid input states.