What is snapshot with reference to data warehouse?A snapshot of data warehouse is a persisted report from the catalogue. The persistence into a file is done after disconnecting report from the catalogue.
What is snapshot with reference to data warehouse?A snapshot is in a data warehouse can be used to track activities. For example, every time an employee attempts to change his address, the data warehouse can be alerted for a snapshot. This means that each snap shot is taken when some event is fired.
A snapshot has three components –
Time when event occurred.
A key to identify the snap shot.
Data that relates to the key.