Update after getting all records using Web service

Question

I just want to know is there a way to select records and return it as list from a table then after it's done, there will be an update script. Can I create a script using only 1 web service

I'm using C# and I have only 1 table to select and update

Table
Column1
Column2
column3
Status

The status values are 0 and 1, I want to retrieve all records with 0 value using web service then update it as 1 if the retrieval is finished