1. Copyright © 1999-2000 SoftTree Technologies, Inc. DB Difference Expert

2. As a database DBA or developer you know that sooner or later you will end up with several different versions of your project residing in different schemas or databases; this is the nature of the development process. DB Difference Expert is the tool that you can use to compare: Compared databases, schemas, or objects can reside on the same or different Oracle servers. Individual database objects Database schemas Entire databases Entire databases including objects, schemas, logical and physical design, users and profiles, instance parameters, etc...

3. Difference Wizard guides through the entire comparison process.

4. The comparison engine performs in depth analysis based on the information you supplied while answering Difference Wizard questions. For your convenience, the results of comparison are presented in 3 different forms: Explorer style tree-view with drill-down options SQL code template for synchronization of found changes optimized for printing Comparison report optimized for printing Any comparison view and report can be printed, including tree-views and code templates. For your convenience only different items and their tree- view branches are displayed in bold.

5. 1. Comparison results -- drill-down treeviews

6. 2. Comparison results -- SQL code templates

7. 3. Comparison results -- comparison report

8. Database change analysis central repository changes over a period of timeDB Difference Expert creates and maintains the central repository for storing definitions of compared items. Every time you compare databases, schemas or objects, DB Difference Expert adds their current definitions to the repository. These “point-in-time” snapshots stored in the repository allow you to use DB Difference Expert for tracking object and database changes over a period of time. different versionssaved in the repositoryDB Difference Expert is also capable to compare different versions of objects previously saved in the repository.

9. DB Difference Expert also provides the graphical Repository Browser that you can use to browse objects in the repository just as you use File Explorer to browse files on your computer. Database change analysis (continued)

10. Usage DBAs can use DB Difference Expert for: Analyzing impact and managing complex database changes across the enterprise.Analyzing impact and managing complex database changes across the enterprise. Searching database differences after various database and application upgrades.Searching database differences after various database and application upgrades. Creating historical “point-in-time” database design snapshots.Creating historical “point-in-time” database design snapshots. Developers can use DB Difference Expert for: Searching and analyzing schema differences after various application upgrades.Searching and analyzing schema differences after various application upgrades. Creating historical “point-in-time” schema design snapshots.Creating historical “point-in-time” schema design snapshots. Tracking and versioning the development process.Tracking and versioning the development process.

11. Summary With the help of DB Difference Expert, DBAs and developers can now greatly improve reliability and manageability of their Oracle databases and applications as well as enhance quality of the development process.