Why is it important for every column in a table to have a unique name in 1NF?To prevent data inconsistencyTo ensure data redundancy
Question
Why is it important for every column in a table to have a unique name in 1NF?To prevent data inconsistencyTo ensure data redundancy
Solution
In the First Normal Form (1NF), every column in a table must have a unique name to prevent data inconsistency and ensure data redundancy. Here's why:
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Prevent Data Inconsistency: If two or more columns have the same name, it can lead to confusion and errors in data retrieval. For example, if you have two columns named 'Address', it would be unclear which one to refer to when querying the database. This can lead to data inconsistency, where the same piece of data has different values in different places.
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Ensure Data Redundancy: Unique column names also help to avoid unnecessary duplication of data (data redundancy). If every column has a unique name, each piece of data is stored in its specific place, reducing the need for it to be duplicated elsewhere. This makes the database more efficient and easier to manage.
Therefore, having unique names for each column in a table is a fundamental requirement in 1NF to maintain the integrity and efficiency of the database.
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