I am facing issue like while I am trying retrieve the data from the data base I am getting Z as default for date , I only need date as MM/DD/YYYY format only. How can I fix this using expression role?

It's worth noting what the 'Z' actually represents: 

The ISO 8601 standard defines formats for representing date-time values as text. The T is just a marker for where the time part begins. The Z is an abbreviation of +00:00 , meaning UTC (an offset of zero hour-minutes-seconds).

This may be more pertinent for datetimes where the time being returned from your database might not be the local time you think it should be.

It's worth noting what the 'Z' actually represents: 

The ISO 8601 standard defines formats for representing date-time values as text. The T is just a marker for where the time part begins. The Z is an abbreviation of +00:00 , meaning UTC (an offset of zero hour-minutes-seconds).

This may be more pertinent for datetimes where the time being returned from your database might not be the local time you think it should be.

valuable comment :) 

Thanks for your reply.