Information developers frequently encounter primary and foreign keys when creating relational systems. A primary key is a column, or a group of columns, that uniquely distinguishes each entry in a table. Think of it as the essential ID for each item. In contrast, a foreign key is a column in one table that refers to the unique key in another table.… Read More

The Excel position function is an incredibly helpful tool for identifying the relative standing of a value within a set of data. In essence, it assigns a tier based on how it compares to other values in a list. You can leverage it to see where a particular score belongs in a grading system, assess performance against peers, or simply organize data … Read More