Migrating Applications from WebLogic, JBoss and Tomcat to WebSphere V6

Appendix A. Development tips for portable applications 297

This iterative behavior occurs at a macro and micro level. At a macro level, the

entire life cycle repeats itself; the maintenance stage often leads back to the

requirements gathering and analysis stage. At a micro level, the review of one

stage may lead back to the start of the stage again or indeed back to the start of

another stage.

For example, if during low-level design, a flaw or inconsistency is found in the

high-level design, then a micro HLD stage is followed again to ensure that the

HLD is updated correctly. Indeed, this may even feed back to a micro cycle of the

requirements gathering and analysis stage if the flaw in the HLD was found to be

due to vagueness in the requirements ...