This website has some great resources for OOAD and UML topics. Checkout the trainings, links, Free books etc. Also good resource website for IBM exam 486 - OOAD UML Certification.

Resource center for IBM DB2 Universal Database.Carries information on DB2 Education, Certification and Training,and also provides DB2 Information links,DB2 Tips and tricks,DB2 User Articles,DB2 Whitepapers and Events.