HBase and RDBMS are both database management systems, but they are used for different purposes.
HBase is a non-relational, column-oriented database that is used for storing and managing large amounts of unstructured data. It is designed to store data that is constantly changing and growing in size. HBase is well-suited for applications that require random, real-time read/write access to large datasets. Examples include social media networks, online gaming, and large e-commerce websites.
RDBMS, on the other hand, is a relational database management system that is used for storing and managing structured data. It is designed to store data in a tabular form and is well-suited for applications that require complex data analysis and reporting. Examples include financial applications, online banking, and customer relationship management systems.