(Secondary Data) as the data from the data source that contains the user data is collected in the past, and it is often information obtained through basic analysis. Users access can save both time and expense. Secondary information sometimes will not meet your needs, or are there not enough details. In addition, users will not be aware of data errors, which might cause those who adopt conclusions wrong with such accidents by the motorcycle of the year 2540-2541 student information is sometimes being processed, because sometimes we are not able to get primary data storage, we need studies from data already collected.
การแปล กรุณารอสักครู่..