Explain ETL architecture?

Question

Accepted Answer

ETL architecture refers to the design and structure of the ETL process.

ETL architecture involves three main components: extraction, transformation, and loading.
Data is extracted from various sources, transformed to fit the target system, and loaded into the target database.
ETL architecture can be implemented using different tools and technologies, such as ETL software, data integration platforms, and cloud-based solutions.
The architecture should be designed to ensure data accuracy, consistency, and completeness.
Examples of ETL architecture include batch processing, real-time processing, and hybrid processing.

Accepted Answer

Data where house data base bi power

Accepted Answer

here heterogeneous sources are some flat file and DB file. Once it is landed into root folder of landing area from that point our ETL mechanism is going to star to check the naming convention of file, time stamp, and performed meta data validation for name of attribute, data type, size and constrains.

Once its meet all requirement then its move to standardization table, at the same time one copy send to archive folder for future references.

if its not meet our requirement then data's move to reject folder, from that we sent back to respective sources with error description by email triggering system.

whatever data present in standardization table it moves to staging layer where we can clearing the data and apply some business rules.

Now the data's loaded into data warehouse where we can perform the data validation such as

Record count between source to target.
Make sure that any null value populated in target or not.
make sure any duplicate value populated in target or not.
We perform column mapping using minus query, we make sure that the expected data loaded into target as per requirement. Then we expect the zero rows return.
And also done the SCD type 2 validation for initial and incremental load.
 And also validate that data’s according to business logics.
 Based on specific subject oriented, data’s are stored separately

Explain ETL architecture?

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