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Oracle Database XE 11gR2 Jump Start Guide

You're reading from  Oracle Database XE 11gR2 Jump Start Guide

Product type Book
Published in Jul 2012
Publisher Packt
ISBN-13 9781849686747
Pages 146 pages
Edition 1st Edition
Languages
Author (1):
Asif Momen Asif Momen
Profile icon Asif Momen

Table of Contents (20) Chapters

Oracle Database XE 11gR2 Jump Start Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Database Editions and Oracle Database XE Installing and Uninstalling Oracle Database XE Connecting and Configuring Oracle Database 11g XE Accessing Table Data, DML Statements, and Transactions Creating and Managing Schema Objects Developing Stored Subprograms and Triggers Building a Sample Application with Oracle Application Express Managing Database and Database Storage Moving Data between Oracle Databases Upgrading Oracle Database 11g XE to Other Database Editions Backup and Recovery Tuning Oracle Database 11g XE Features Available with Oracle Database 11g XE

Creating and managing synonyms


A synonym is an alternative name for the table or view. A synonym provides data independence and location transparency. The following is an example of the CREATE SYNONYM statement:

-- Create a new synonym
CREATE SYNONYM emp_syn FOR emp;

Now we can query the emp table directly or using the new emp_syn synonym.

To remove the synonym from the schema, we use the DROP SYNONYM command as follows:

-- Permanently remove the synonym from the database
DROP SYNONYM emp_syn;
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