In ORACLE 10G(SQL)

OBJECTIVES

Introduction to Hierarchical Retrieval

Hierarchical Queries

Walking the tree

Formatting Hierarchical reports by using LEVEL and LPAD

Prunning branches

Advantages

Summary

INTRODUCTION

Hierarchical Retrieval retrives data based on natural hierarchical relationship between rows in table.

Advantages

Hierarchical trees are used in various fields like

1. Human genealogy,

2. corporate management,

3. manufacturing,

4. evolutionary research,

5. scientific reasearch

Any Questions?

Thank You