string quote clarification

[vamsi.4a6]

I am using below source file which is sample data.I am able to read the data with
quote=none or double or single[Field level property]

col1,col2
1,a
2,b
3,c
4,d


But input data does not have any double or single quote's for any one of the fields?Just what to know why Job is not throwing any error or warning or compilation errror?

[jerome_rajan]

it won't and it shouldn't. The Quote=double/single merely tells datastage to ignore the character 'IF' present and read from the character after the leading quote character up to and not including the trailing quote.
If not present, it just reads all the data. if the quotes are present, then it ignores them as specified in your property.