FAQ
1. How many types of keys are there in the Relational Database Model?
For more, you can refer to Types of Keys in the Relational Model.
Difference between Primary Key and Foreign Key
Pre-Requisite: Relational Database Model
Keys are one of the most important elements in a relational database to maintain the relationship between the tables and it also helps in uniquely identifying the data from a table. The primary Key is a key that helps in uniquely identifying the tuple of the database whereas the Foreign Key is a key that is used to identify the relationship between the tables through the primary key of one table that is the primary key one table acts as a foreign key to another table. Now, let’s discuss both of them in some detail.