Which database is better for transactional applications: Postgresql or MySQL?

Postgresql and MySQL are two popular open-source relational database management systems that are used for building transactional applications. Both databases have their own strengths and weaknesses, and the choice between them largely depends on the specific requirements of the application.

Postgresql is known for its robustness, scalability, and strict adherence to standards. It supports a wide range of data types, and is capable of handling complex queries and transactions. It also has excellent data integrity features, and supports full-text search and spatial data. On the other hand, MySQL is known for its simplicity, ease of use, and high performance. It is a fast database that can handle a large number of transactions at once.

In general, Postgresql is considered to be better suited for complex applications that require a high degree of data integrity, while MySQL is a good choice for simpler applications that need to handle a large number of transactions quickly. However, both databases are capable of handling transactional applications, and the choice between them ultimately depends on the specific requirements of the application.