In less than 150 words, describe the two types of Big Data processing workloads.

Expert Solution

In Big data, there are mainly two types of processing workloads.

History load - In a data warehouse, they store historical data which dates back to long periods of time. Based on the time period the end user wants to analyse the data, the data is stored. For example, if for an organization, they want to compare monthly sales, then monthly history data is stored.
Incremental load - To keep the data warehouse updated, most recent data is regularly updated in the data warehouse. It is a type of periodic load whose periodicity depends on the availability of the data source. It is a lifelong process that continues till the lifetime of the warehouse. The incrments can be on a daily, weekly, monthly or yearly basis or it can be a mixture of them.

In general, the loading is carried out in two stages.

1. Loading transformed data to the staging database.

2. Loading data from the staging db to warehouse.

The discussed processing workloads can be applied to both or either of the two stages.

venereology answered 1 year ago

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