Preface

This guide describes Oracle's approach for information integration in a heterogeneous environment. Specifically, it describes Oracle Database gateways.

This preface contains these topics:

• Audience

• Documentation Accessibility

• Related Documents

• Conventions

Audience

This guide is intended for the following users:

• Database administrators who want to manage distributed database systems that involve Oracle to non-Oracle database links

• Application developers who want to use the heterogeneous connectivity functionality in Oracle database

• Readers who want a high-level understanding of Oracle's architecture for heterogeneous connectivity and how it works

To use this guide, you must be familiar with relational database concepts and basic database or applications administration. You must be familiar with the operating system environment under which database administrators are running Oracle software.

Documentation Accessibility

Our goal is to make Oracle products, services, and supporting documentation accessible to all users, including users that are disabled. To that end, our documentation includes features that make information available to users of assistive technology. This documentation is available in HTML format, and contains markup to facilitate access by the disabled community. Accessibility standards will continue to evolve over time, and Oracle is actively engaged with other market-leading technology vendors to address technical obstacles so that our documentation can be accessible to all of our customers. For more information, visit the Oracle Accessibility Program Web site at http://www.oracle.com/accessibility/.

Accessibility of Code Examples in Documentation

Screen readers may not always correctly read the code examples in this document. The conventions for writing code require that closing braces should appear on an otherwise empty line; however, some screen readers may not always read a line of text that consists solely of a bracket or brace.

Accessibility of Links to External Web Sites in Documentation

This documentation may contain links to Web sites of other companies or organizations that Oracle does not own or control. Oracle neither evaluates nor makes any representations regarding the accessibility of these Web sites.

Deaf/Hard of Hearing Access to Oracle Support Services

To reach Oracle Support Services, use a telecommunications relay service (TRS) to call Oracle Support at 1.800.223.1711. An Oracle Support Services engineer will handle technical issues and provide customer support according to the Oracle service request process. Information about TRS is available at http://www.fcc.gov/cgb/consumerfacts/trs.html, and a list of phone numbers is available at http://www.fcc.gov/cgb/dro/trsphonebk.html.

Related Documents

For more information, see the following:

• Oracle Database Concepts

• Oracle Database Administrator's Guide

• Oracle Database Advanced Application Developer's Guide

Many of the examples in this guide use the sample schemas, which are installed by default when you select the Basic Installation option with an Oracle Database installation. See Oracle Database Sample Schemas for information about how these schemas were created and how to use them.

Conventions

The following text conventions are used in this document: