Getting Started with InfoSphere Data Architect

Chapter 7 – Reverse-Engineering 133
6. On the Reverse Engineering Status page, verify that the script file was successfully reverseengineered,
then click Finish to create the physical data model.
The NEW_SDT_DDL.dbm physical data model is created in the Data Project Explorer, as shown in Figure
7.2.
Figure 7.2 – New physical data model, created from a DDL file
If you explore the physical data model, you see the schema and tables that were specified in the DDL
script.
7.2.2 Reverse-engineering from a database
The process of reverse-engineering from a database is pretty similar to that of reverse-engineering from a
DDL script, except that you can choose what objects to reverse-engineer from the database. For
example, a database might contain multiple schemas, and you want to keep your schema models
separate from one another. Simply select the schema or schemas that you want to reverse-engineer, and
modify them before you deploy the changes.
Although you already have an existing copy of the STUDENT_LIFE schema, contained in the
STUDENT_INFO_SYSTEM.dbm physical data model file, let's use the schema deployed on the database
to reverse-engineer and make changes, so that we can later compare and deploy those changes to the
SAMPLE database.
To reverse-engineer from a database:
1. From the main menu, click File -> New -> Physical Data Model. The New Physical Data Model
wizard opens.
2. Complete the Model File page:
a. Specify the University Info System data design project as the destination folder.
b. In the File name field, specify NEW_SDT_INFO_SYS.
c. Specify DB2 for Linux, UNIX, and Windows as the database type.
d. Specify V9.7 as the database version.