Getting Started with InfoSphere Data Architect
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Chapter 7 – Reverse-Engineering 129<br />
7<br />
Chapter 7 – Reverse-Engineering<br />
Often, companies have large schemas <strong>with</strong> multiple tables that are deployed to a database before you<br />
start your work as a data architect. If you need to make changes to these schemas, it takes a large<br />
amount of time and effort to manage these changes <strong>with</strong>out affecting existing constraints or losing data.<br />
However, you can create a physical data model from the existing set of database objects. After you<br />
reverse-engineer an existing database, making changes and deploying the set of changes in the model<br />
back to the database becomes an easy process. This is what we will be exploring in this chapter.<br />
In this chapter you will learn about:<br />
• Reverse-engineering from an existing database in the workbench<br />
• Comparing and merging changes to your data models<br />
• Generating the DDL to deploy your changes
Change language