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10th Day

** Generally packages define only structure and it doesn't maintain any data i.e it contains only metadata which defines structure, so the size of the packages will be in the size of kb but process or transforms data in tb.

** Transformations:

These are intermediate metadata objects placed b//n source and destination, contains an input and output link.

* Synchronous transformations: No of o/p rows will be equal to i/p rows.

* Asynchronous transformations: No of o/p rows will be less than or equal to i/p rows.

1.Sort: It serve the purpose similar to order by clause except here we can eliminate redundancy/ transfer directly to the sorting columns

* It is used to sort the input data either ascending or descending order based on column(s)

* It is a Asynchronous transformation because it eliminates duplicate rows.

Example: Load the data from source into a destination with applying sorting on 2 or 3 columns.

 

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