What is data transformation? Data transformation means changing how data looks, how it’s organized, or what it contains (data’s format, structure, or values). As a data analyst, we may need to do this to make data easier to analyze. Data transformation involves: Adding, copying, or replicating …

This reading is all about data modeling and the different types of data models. Data models help keep data organized and make it easier for people to understand how data is structured. Knowing the basics of data modeling helps analysts and other team members make sense of their data and use it …

The structure of data Data is everywhere and it can be stored in lots of ways. Two general categories of data are: Structured data: Organized in a certain format, such as rows and columns. Unstructured data: Not organized in any easy-to-identify way. For example, when we rate our favorite restaurant …