How to show duplicate data in mashup

[dcbb]

Hi All,

   I have data in database so if user enter data it will store in database again user enter the data means(sum fields same and sum fields not same) suppose user enter id, email ID, password enter data but data already available in data so i want to show pop up like(email ID already store in database so enter new email ID). Can you please explain me what and what..How to write service using java script

[PaiChung]

It sounds to me that you already have all the logical flow you need.

1. source of data

2. way to enter data into that source

3. validate any entry being made

4. return validation message

all you now need to do is fill in the actual logic.