Ravindra BagaleCourses & study guides Track your progress

What Is SQL and Why Analysts Need It

By Last updated:

Lessons in this chapter:

  1. 1.1 What Is SQL in Simple Words (Ask Questions of Tables)
  2. 1.2 SQL vs Excel vs Power BI vs Python — When to Use Which
  3. 1.3 Tables, Rows, Columns and Keys Explained for Beginners
  4. 1.4 What Is a Database File (SQLite) vs a Database Server
  5. 1.5 How Analysts Use SQL at Work (Retail, Bank, Clinic Stories)
  6. 1.6 Map of This SQL Course and How to Practise

Quiz for this chapter is available on the Learn tracker after deploy.

Ravindra Bagale's Tip

Finish every lesson example in DB Browser before the quiz.

Ravi Sir's Cards for this chapter

What is SQL?. Most company data is stored in databases, not only in Excel files. Analysts need a simple way to ask for the exact rows they want.Revision cardWhat is SQL, in one line? SQL is the language we use to ask a database for the rows and totals we need.Interview cardSQL vs Excel vs Power BI. SQL asks questions of database tables. Excel is a grid of cells in a workbook. Power BI builds interactive reports.Comparison card

All cards for this chapter