Difference Between VARCHAR() and NARCHAR()

The article discusses the differences between VARCHAR and NVARCHAR data types in SQL databases, focusing on their storage, performance, and compatibility implications. VARCHAR stores non-Unicode characters, requiring one byte per character, while NVARCHAR stores Unicode characters, needing two bytes per character, making it suitable for multilingual data. An example of creating a Users table with VARCHAR and a MultilingualUsers table with NVARCHAR is provided to illustrate the difference. The article also compares the performance of both data types, with VARCHAR offering better performance due to lower storage requirements for ASCII data, and NVARCHAR providing slightly lower performance but essential for multilingual support. The author suggests choosing VARCHAR for optimizing performance in single-language applications and encourages readers to share their thoughts and ideas.