SQL stands for Structured Query Language. It is a language used to store, manage, and retrieve information from relational databases. In other words, SQL allows you to write instructions to a database. You can use it to store new data, update existing data, delete data, search for specific information, and retrieve results. SQL was developed in the 1970s, based on the relational data model. Oracle…

You have probably heard of structured and unstructured data, but the difference can still feel a bit confusing. Let’s tackle it together. What is structured data? Structured data is organized data. It usually exists in a tabular format, with rows and columns. A simple example would be a spreadsheet, like Google Sheets or Microsoft Excel. You have columns with clear labels, such as “Customer ID,” “…

You might have heard terms like data lake, data warehouse, and data mart and wondered what to do with all of them. They sound similar, but they do not play the exact same role. Before comparing everything, let’s take it one concept at a time. Today, we are tackling data lakes. The term “data lake” began to gain traction around 2010 as a new way to think about storing, managing, and analyzing large…