How to update data in the database table?

Hi,

 

I'm very new with Metastorm. 

 

I try to create solution that allow originator to update his own data only in the database table by clicking button using Update Row(s) command function in Visual Script Event-Handler, 

 

how can we allow the data that already stored in the database table can be updated?

 

can we use the grids to update the data in the database table?

 

or can we update the data in the custom list?

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