Delta generic datasource
currently we have a problem with a delta generic datasource. We have just read the HOWTO document "create a generic datasource" but we have some questions about it.
1) Using the lower and upper limits, there is a difference between a blank value and a zero value?
2) Can you suggest the best configuration to this case: we have to load every morning datas of the previous day. We have think to put an upper limit of 1 and a lower limit of 0 (or blank... we don't know if there is a difference between this 2 kind of values)
Thanks a lot