Book Image

Oracle Database XE 11gR2 Jump Start Guide

By : Asif Momen
Book Image

Oracle Database XE 11gR2 Jump Start Guide

By: Asif Momen

Overview of this book

Oracle Database XE 11gR2 is an excellent beginner-level database and is a great platform to learn database concepts. "Oracle Database XE 11gR2 Jump Start Guide" helps you to install, administer, maintain, tune, back up and upgrade your Oracle Database Express Edition. The book also helps you to build custom database applications using Oracle Application Express.Using this book, you will be able to install Oracle Database XE on Windows/Linux operating system.This book helps you understand different database editions and it guides you through the installation procedure with the aid of screenshots. You will learn to interact with the database objects. You will gain a solid understanding of stored sub-programs which is followed by an introduction to Oracle Application Express (APEX). Solid database performance tuning strategies are also discussed in this book followed by backup and recovery scenarios. All in all, "Oracle Database XE 11gR2 Jump Start Guide" delivers everything that you should know to get started with Oracle Database administration.
Table of Contents (20 chapters)
Oracle Database XE 11gR2 Jump Start Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface

Chapter 4. Accessing Table Data, DML Statements, and Transactions

Always desire to learn something useful. - Sophocles

In this chapter, we will install Oracle's free graphical tool, SQL Developer and use it to communicate with Oracle Database XE. You use SQL Developer to browse database objects and execute SQL statements. Querying the database is the most common job and this chapter focuses on writing simple and multi-table queries. We will also see some of the common database functions that are used in a daily routine. The following are the topics that are covered in this chapter:

  • Unlocking sample user accounts

  • Installing SQL Developer

  • Connecting SQL Developer to Oracle Database 11g XE

  • About TAB and DUAL

  • Writing simple queries

  • Selecting data from multiple tables

  • Exploring common functions

  • What are Transaction Control Statements?

  • Commit Understanding DML statements

Unlocking sample user accounts

Oracle Database 11g XE comes with sample database users such as HR, MDSYS, and others. Some of the user accounts...