SQL Derived Tables, CTEs

Hello everyone, whether you work as a data analyst, engineer, or data scientist, knowing Derived Tables and Common Table Expressions (CTEs) is a must. It’s important to know how to use them. Derived tables and Common Table stand are used on advanced SQL queries, offering an extensive range of functionalities to handle complex data sets

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What is SQL Transactions ? and when you should use it ?

What is SQL Transactions ? and when you should use it ? Hello everyone, if you’re a data analyst, you might not use transactions in your everyday tasks since you access data mostly in read-only mode. However, understanding how they work is crucial because they are a fundamental principle in managing databases. Ensuring data integrity

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SQL vs NoSQL, the simple difference

SQL vs NoSQL, the simple difference Hello everyone, today, we will focus on the differences between relational and non-relational databases, which are commonly referred to as SQL and NoSQL. As a data analytics or data engineer, you are likely already familiar with these differences. However, beginners may find the concepts of each type unclear. And

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