I'm creating a new interface object to display several pie charts. The data for the charts is stored in a local variables in the parent interface object which references my children interfaces. In terms of performance, what is the most efficient method to access the data required for the pie charts? Create a rule input on the children interfaces and pass the local variables data from the parent interface or query the data separately in the child interface to avoid passing it from the parent interface?
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It depends , Are you using record data or CDT's?? If you use record data with data sync Appian suggests you to directly use it as a source instead of queries (We are not querying database it fetches from Appian data server so it will not consume more time)
I'm using Record Types and usually I embed interfaces that use the same calculated data into a parent one. Is a good practice get the data in the parent interface and pass it to the embeded interfaces?
Thanks.
Yes in normal scenario's (or in any coding applications it's the best practice "Data Redundancy" ) but Charts/grids are different like Appian provides few perks with this direct record source.