What are some real-world examples of normalization in databases?

What are some real-world examples of normalization in databases?

Normalization in databases is the process of organizing data to reduce redundancy. A common example is a customer database where customer information is separated into different tables, such as 'Customers', 'Orders', and 'Products'. This way, each piece of information is stored only once.

Can you explain how normalization helps in reducing data redundancy?

Sure! Normalization helps by ensuring that each piece of data is stored in only one place. For instance, if a customer's address is stored in multiple tables, any update to that address would require changes in all those tables. Normalization eliminates this issue by placing the address in a single 'Customers' table.

What are the different normal forms in normalization?

There are several normal forms, including First Normal Form (1NF), Second Normal Form (2NF), and Third Normal Form (3NF). Each normal form has specific rules that must be followed to achieve a higher level of normalization.

Can you give an example of a database that is not normalized?

Certainly! A non-normalized database might have a single table that includes customer names, addresses, and their orders all in one row. This leads to redundancy, as the same customer information would be repeated for every order they make.