Unclear data engineering job description ? Wondering what responsibilities falls within a data team ? Then this post is for you. In this post we go over the 6 key responsibilities of a data engineer. The number of these responsibilities that you may end up handling depends on your company and team. Teams in smaller companies generally handle all 6 responsibilities, whereas larger sized companies may have individual(or multiple) teams handling one(or a mix) of these responsibilities.
In this post, we go over 6 key concepts to help you master window functions. Window functions are one the most powerful features of SQL, they are very useful in analytics and performing operations that cannot be done easily with the standard group by, subquery and filters. Despite this, window functions are not used frequently. If you have ever thought 'window functions are confusing', then this post is for you.
You have heard of Common Table Expressions(CTEs), but are not be sure what they are and when to use them. What if you knew exactly what Common Table Expressions(CTEs) were and when to use them? In this post, we go over what CTEs are, and their performance comparisons against subqueries, derived tables, and temp tables to help decide when to use them.
This post goes over what the ETL and ELT data pipeline paradigms are. It tries to address the inconsistency in naming conventions and how to understand what they really mean. Finally ends with a comparison of the 2 paradigms and how to use these concepts to build efficient and scalable data pipelines.
Trying to incorporate testing in a data pipeline? This post is for you. In this post, we go over 4 types of tests to add to your data pipeline to ensure high-quality data. We also go over how to prioritize adding these tests, while developing new features.
Preparing for a data engineering interview and are overwhelmed by all the tools and concepts?. Then this post is for you, in this post we go over the most common tools and concepts you need to know to ace your data engineering interviews.
Wondering what is staging and why you need one for your data pipelines? Then this post is for you. In this post, we will go over what exactly a staging area is and why it is crucial for data pipelines.
Unclear what a data warehouse is or when to use one? Then this post is for you. In this post, we go over what a data warehouse is, the need for it, and the differences between using an OLTP and OLAP database as a data warehouse.