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Where do you usually validate when importing data using data management and why?
validations will apply in both "Source to Staging" and "Staging to Target steps."
It means that is it okay if I only put validation method in Staging table? What if I skip the staging table?
Kindly Refer to this hope it will cover all what you need
docs.microsoft.com/.../validations-defaults-unmapped-fields
Staging tables are used just in certain cases (you can use data entities via OData, from code etc.), therefore that's not a good place for things like validations. Business logic for a data entity should be implemented inside the data entity.
Based from what I've read. Staging tables are generated to provide intermediary storage. This enables the framework to do high-volume parsing, transformation, and some validation.
My initial thoughts on that was I should implement the validation in staging tables because they are intended to do high-volume stuff.
Are there any performance issues if I import 10 thousand lines of an excel file using data entity validation?
Thanks Martin!
A super-fast validation is useless if it's not called at all. And that would often be the case with your design.
Staging tables are used just in some cases and they're populated by SSIS, which doesn't execute any X++ validations. You can execute some X++ code after importing the data, but I don't see any benefit of running validations there.
The sole purpose of staging tables is to get data from files to F&O where you can work with the data. Business logic, including validations, is executed by data entities in the step, where data is validated and imported.
Also, if you don't import data from files, no staging table is used any validation you put there would be bypassed.
That's really helpful. Let's say I use excel file as a source for importing data through data management. The best way to do is, write your validation code inside validateField or validateWrite in the data entity and leave the staging table methods alone.
Based from your answers I can apply that to an example scenario wherein I have a custom table that contains old invoices and I'll implement a custom validation in Vendor Invoice Journal Line data entity where I check if the invoices already exists in the old invoices table. I'll probably put the logic in validateWrite or validateField for that data entity.
Thanks again.
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