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GeneXus 8.0: Modeling Becomes More & More Intelligent (III)

In a changing and complex business world, GeneXus 8.0 modeling capabilities enable users to meet the increasing pace at which requirements become more complex, and to capture these realities more easily.

GeneXus is becoming more widely used for developing large, mission-critical applications that usually have long life cycles and constantly evolving (changing) requirements. The dynamic reality represented by these applications becomes more complex as time goes by. In order to help developers handle this reality, GeneXus 8.0 has greatly improved what it was already good at: reducing to a minimum the need to write code in order to represent reality.

One of the aspects strengthened in this version is the automatic database reorganization, which is actually one of the main competitive advantages of the tool. This process results from the analysis of two database structures (a current one and a designed one) for determining the best way to convert one into the other without data loss. In order to perfect it, GeneXus has enhanced the Impact Analysis Report (IAR), and added more data conversion cases and controls for predicting failures.

New subtype features
"The new scheme for handling subtypes in GeneXus 8.0 has enabled us to model better, solve complex issues by using subtypes, and consequently write less code later. They work fine," says Gerardo Abreu, GeneXus 8.0 beta tester, who has developed a production control system using this version.
Relations between GeneXus attributes are established through their names. Sometimes it is necessary to give different names to attributes that respond to the same concept. In those cases, GeneXus provides subtypes for making it possible for two attributes with a different name to refer to the same concept.
The changes introduced in GeneXus 8.0 regarding the use of subtypes, benefit referential integrity as well as improve performance, programming and its general use.

More powerful For Each
GeneXus 8.0 introduces the possibility of conditioning filters (usually known as filtering conditions or constraints) and orders, specified in the GeneXus objects or in grid controls by using a new clause called WHEN.
This improves application performance in queries with several search criteria because the search order may be coordinated with the appropriate conditions.

New data type: BLOB
This version includes a new BLOB data type for storing binary information of any kind -images, text, video- in the database.

To learn more:

Database reorganization
http://www.gxtechnical.com/main/hgxnews.aspx?2,6,69,6267

New subtype features
http://www.gxtechnical.com/main/hgxnews.aspx?2,6,69,6239  

More powerful For Each
http://www.gxtechnical.com/main/Hgxnews.aspx?2,6,69,6284  

New BLOB data type
http://www.gxtechnical.com/main/Hgxnews.aspx?2,6,69,6305  

Related
GeneXus 8.0 Web (I)
GeneXus 8.0 Integration (II)
GeneXus 8.0: Greater Productivity (IV)
GeneXus 8.0: More Platforms and New Devices