Calculate the Depth of a Hierarchy using Postgres recursive query

In this tutorial, you will learn about PostgreSQL recursive queries that use recursive common table expressions (CTEs) to generate the depth of a hierarchy. Introduction to the PostgreSQL Recursive Query PostgreSQL includes the WITH statement, which allows you to create auxiliary statements for use in queries. These statements are frequently referred to as common table…

The ACID properties in SQL database

When creating a SQL database, one of the most important elements to consider is its acid properties. Acid stands for Atomicity, Consistency, Isolation, and Durability. These four properties help ensure that any data stored in the database is safe and will remain consistent no matter what changes occur.