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GeneXus 16 course - Junior Level

You will easily learn, through different examples, the core of GeneXus in order to start developing your own applications.
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Describing objects from reality

How do we represent that a country has a number of cities? Creating a second level in the structure of the Country transaction.


Click here for a PDF transcript of the video.

We see that GeneXus creates two tables and focus on the primary key corresponding to the second level. We see the grid added in the web form to record cities. We add the city to the Attraction transaction and specify that it may be empty (nullable) in runtime. 
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