PostgreSQL outperforms MongoDB and HarperDB in handling structured data.
The article compares the performance of three database systems: HarperDB, MongoDB, and PostgreSQL. HarperDB combines relational and non-relational features, giving developers more flexibility. PostgreSQL works well with structured data, while HarperDB can handle both structured and unstructured data. This makes HarperDB a versatile option for companies dealing with different types of data.