Homonym: Null (Void)
In programming and databases, "Null" represents the absence of a value or a non-existent reference. It indicates that a variable or field does not hold any data, which can be useful for distinguishing between a value of zero or an empty string and a lack of value altogether.
In many programming languages, such as Java and Python, Null is a special marker that helps developers manage data more effectively. It can prevent errors by allowing checks for missing information before performing operations, ensuring that programs run smoothly without unexpected crashes.