According to your experience, what is the best database to use in Datalogs?
Historian sucks. A ultra expensive software, a real headache. Too many bugs, it usually hangs up and suddenly stops registering data, with which you have to restart the server. I also hate the way interpolation of number transitions. For example, if I change a Set Point from 40 to 60, instead of showing it as a straight step, it shows it as a sawtooth. Or when there are zero values for a long time, it does not register them and when that value stops being zero, it connects the new data with a wrong curve that does not correlate with reality, because it connect the 1rst zero value with a sawtooth with the new data. Everytime you open a TrendX display, you have to pray that the pens still there drawing curves.
SQL Server: Excellent because it supports large databases. Easy to integrate with VBA for SQL queries. The problem is that sometimes it hangs and stops registering with which you have to restart the DatalogOn command. Why? I dont know. I do not even know if the problem is in FTView or in SQL Server.
DBase: The most robust of all, almost never hangs, but due to its limited database capacity, forces me to create new files (weekly in my case), which is more cumbersome if you want to make a query SQL with date range. I had planned to continue using DBase and when I want to do a query by dates, create a SnapShot to TrendX in that range of dates and send that data to a unique dbf file.
What database do you use? Experiences, recommendations?
Thanks!
Historian sucks. A ultra expensive software, a real headache. Too many bugs, it usually hangs up and suddenly stops registering data, with which you have to restart the server. I also hate the way interpolation of number transitions. For example, if I change a Set Point from 40 to 60, instead of showing it as a straight step, it shows it as a sawtooth. Or when there are zero values for a long time, it does not register them and when that value stops being zero, it connects the new data with a wrong curve that does not correlate with reality, because it connect the 1rst zero value with a sawtooth with the new data. Everytime you open a TrendX display, you have to pray that the pens still there drawing curves.
SQL Server: Excellent because it supports large databases. Easy to integrate with VBA for SQL queries. The problem is that sometimes it hangs and stops registering with which you have to restart the DatalogOn command. Why? I dont know. I do not even know if the problem is in FTView or in SQL Server.
DBase: The most robust of all, almost never hangs, but due to its limited database capacity, forces me to create new files (weekly in my case), which is more cumbersome if you want to make a query SQL with date range. I had planned to continue using DBase and when I want to do a query by dates, create a SnapShot to TrendX in that range of dates and send that data to a unique dbf file.
What database do you use? Experiences, recommendations?
Thanks!
