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GeneXus 15 course - Junior Level

You will easily learn, through different examples, the core of GeneXus in order to start developing your own applications.
Presentation
Online course
Materials

Application grows up

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


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. 

Click here for a PDF transcript of the video.
Related
New entities added to the project
Creation of a transaction
Subtypes
Business Components
First transaction design
Working with attributes and domains
Identifying availabe attributes
Relations between entities from reality
Defining more transactions
Another example of database update using transactions without form
Two level transaction used as Business Component, and error management
First transaction design
First transaction design - PDF
Working with attributes and domains
Defining more transactions
43 Videos (07h 01min)
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