Video for lesson 3 of OpenXava course

We have published a new video of our OpenXava course. In this lesson 3 we'll finish to create all the entities required for our project, including Invoice, we will learn how to calculate default values, how to make regular references and how to create collections of dependent objects.

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Moreover, we have upgraded the lesson 12 about references and collections to OpenXava 6.5, so now all the course content is upgraded to latest OpenXava version.