Book Image

Managing Multimedia and Unstructured Data in the Oracle Database

By : MARCEL KRATOCHVIL
Book Image

Managing Multimedia and Unstructured Data in the Oracle Database

By: MARCEL KRATOCHVIL

Overview of this book

Multimedia is the new digital frontier. Managers, software architects, administrators and developers need to fully comprehend this exciting new technology as its widespread use and acceptance cannot be ignored any longer."Managing Multimedia and Unstructured Data in the Oracle Database" will give you a complete understanding of how to manage all data, especially multimedia. You will learn all the latest terminology, how to set up a database, load digital objects, search on them and even how to sell them. Whether you are a manager or database administrator, this book will give you the knowledge you need to take control of this rapidly growing and industry- changing technology. Technology which is transforming our lives.Starting with the basic principles of unstructured data and detailing the concepts behind multimedia warehouses and digital asset management systems, this book will describe how to load this data, search against it, display it intelligently, and deliver it to customers and users. Learn how all these concepts work within the Oracle 11g R2 database environment and how to tune the database effectively to manage it.Begin to learn about this new and exciting field and use it to give your business a competitive edge or give yourself the ability to take a leadership role in this exciting new computing genre.
Table of Contents (22 chapters)
Managing Multimedia and Unstructured Data in the Oracle Database
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

External locations and security


When working with digital objects, it is inevitable that the database administrator will need to configure some type of external access to load external files into the database server. There are four available methods that can be used, each one using very different loading methods.

Oracle directory

A number of external access points can be used when accessing external files. The directory is one that Oracle Multimedia uses. Others include utl_file and it is also possible to use Java to access directories directly. But let's first define an external directory that the multimedia schema can access.

The following is an example on Windows:

create or replace directory LOADING_DIR as
    'C:\multimedia_files';

The following is an example on Unix:

create directory LOADING_DIR as '/u01/multimedia_files';

Granting access to a directory

Once created, access to the directory can be given using Oracle grants:

grant read on directory LOADING_DIR to multimedia;

Access is also implicitly...