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Relational databases store data in tables (rows and columns) so that it can be used to form relations with other tables. The only difference between relational databases and simple databases is that we can easily create relationships using RDB. Most relational databases use SQL as a language to access the database. The syntax of SQL is also very simple, making it easy to learn. The advantages of relational databases are very flexible in nature. They are also very clean and effective as data is stored in the form of rows and columns.