Data Engineering for Beginners

CHAPTER 1Understanding Data

Data is often referred to as the new oil. In today’s world, data powers almost every decision we make and shapes the innovations that define industries. The word “data” is derived from the Latin word “datum” (singular), meaning “something given” or “a thing given.” This reflects the idea that data consists of pieces of information that are provided or recorded as they are observed, without interpretation or analysis. In its original sense, a “datum” is a single fact or piece of evidence.

Data refers to raw, unorganized facts or information that can be processed or analyzed to derive meaning. These facts can be in the form of numbers, text, images, audio, or any other measurable elements. Data on its own does not have meaning until it is structured and interpreted. Once organized and processed, data can provide insights, inform decision-making, and be used for a variety of purposes, such as scientific research, business analytics, or technological development. In this chapter, we’re going to explore the fundamentals of data and its different forms, and discuss its importance. This will build a solid foundation for subsequent chapters in this book.

WHAT YOU WILL LEARN IN THIS CHAPTER:

• The growing importance of data throughout history
• The advantages and limitations of different types of data
• How data is used in different industries
• The role of data engineering

A Brief History of Data

The first time I encountered the term “data” was in high school, ...