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In the context of a relational database management system (RDBMS), several terms and operations are fundamental to understanding how data is stored, retrieved, and manipulated. The relational model organizes data into tables (relations), and various keys, operations, and constraints are used to maintain the integrity and functionality of these relations. Below is an explanation of key terms within the relational model, each with an example.

Super Key

A super key is a set of attributes (columns) in a relation that uniquely identifies each tuple (row) in the relation. It may contain extra attributes that are not necessary for uniqueness but still serve the purpose of identifying rows uniquely. Essentially, a super key can have one or more attributes, and any subset of the super key that still maintains uniqueness is also considered a super key.

Example: Consider the following table of employees:

Emp_ID	Emp_Name	Emp_Age	Emp_Dept
1	Alice	28	HR
2	Bob	34	IT
3	Charlie	25	IT

In this example, the super key can be:

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