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Oracle 11g Streams Implementer's Guide

You're reading from  Oracle 11g Streams Implementer's Guide

Product type Book
Published in Dec 2009
Publisher Packt
ISBN-13 9781847199706
Pages 352 pages
Edition 1st Edition
Languages

Table of Contents (14) Chapters

Oracle 11g Streams Implementer's Guide
Credits
About the Authors
About the Reviewers
Preface
All the Pieces: The Parts of an Oracle 11g Streams Environment Plot Your Course: Design Considerations Prepare the Rafts and Secure Your Gear: The pre-work before configuring Oracle 11g Streams Single-Source Configuration N-Way Replication Get Fancy with Streams Advanced Configurations Document What You Have and How It Is Working Dealing with the Ever Constant Tides of Change Appendix and Glossary

Who and How?


The next step is to look at who will use the data and how they will use it. When you design your Streamed environment, take into account considerations such as.

  • Will some users only need to query (read) the data?

  • Which sites will create the data?

  • Which sites will be allowed to change or delete the data?

  • If data diverges, which version of the data is kept and which is overwritten?

In short, who owns the data? Let's talk about what this means.

Data ownership refers to the right to create, change, or delete data. Data ownership can be described by a level and model.

Data ownership can be enforced at the site, user, and table levels. Table level ownership can be further subsetted at the row (horizontal) and column (vertical) levels. For instance, regional databases may have access to personnel data, however, only headquarters can make changes to the data (Site level). A further limitation could be that only HR employees are allowed to change the data (user level). However, these HR...

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