Introduction This article is a beginner’s guide for the Percona Monitoring and Management (PMM), a tool that’s very handy when it comes to analyzing a given database system. PMM was released in 2016, and initially, it was available for MySQL. However, since 2018, it supports monitoring PostgreSQL as well, so once you learn it you can use it with the two most popular open-source relational database systems.
Introduction In this article, I’m going to explain how we can map Java Records to JSON columns when using Hibernate. Because Hibernate ORM does not offer built-in support for JSON, we are going to use the Hypersistence Utils library, which allows you to map entity attributes to JSON column types, no matter if you are using Oracle, SQL Server, PostgreSQL, or MySQL.
Introduction In this article, we are going to see how we can implement an audit logging mechanism using SQL Server database triggers to store both the previous and the current state of a given target table record in JSON column types.