What are the potential pitfalls of storing attendance data in a SQL database using numerical values (0 = not present, 2 = absent, 3 = present)?

Storing attendance data in a SQL database using numerical values can lead to confusion and potential errors, especially when interpreting the meaning of each number. To solve this issue, it is recommended to use descriptive strings or boolean values instead of numerical codes. This will make the data more understandable and easier to work with.

// Instead of using numerical values for attendance status, use descriptive strings or boolean values
// Example of using descriptive strings
$attendanceStatus = "Not Present"; // or "Absent", "Present"
// Example of using boolean values
$isPresent = true; // or false