What you’ll learn in this Chapter
✓ What is a hierarchy
✓ How to analyze table data into hierarchy
✓ START WITH and CONNECT BY clauses
✓ How to sort your hierarchical data
Overview
Oracle provides clauses like START WITH, CONNECT BY and many functions in the form of hierarchical queries to help you to operate hierarchical data in a table. This chapter will explain you how Oracle handles and operates with hierarchical data.