**CS1021 Software Development II** Lecture Videos Winter 2018-2019 Week 2 Lecture 2 # Introduction [download](oldlecs/1021-2-2a.mp4)  # Review of Inheritance [download](oldlecs/1021-2-2b.mp4)  # Aggregation and Composition [download](oldlecs/1021-2-2c.mp4)  # UML Class Diagrams [download](oldlecs/1021-2-2d.mp4)