Determinate

For operations where the percentage of the operation completed can be determined, use a determinate indicator. They give users a quick sense of how long an operation will take.

Indeterminate

For operations where the user is asked to wait a moment while something finishes up, and it’s not necessary to expose what's happening behind the scenes and how long it will take, use an indeterminate indicator.

Buffer

Query Indeterminate and Determinate