Yuri Abele;
I as at fan SQL have one question
- That forces to write transformation in the graphic tool, instead of what to use SQL (PL-SQL/T-SQL/etc)?
- Why eTl instead of elT?
Habit and ambitions - about these stones break many innovations. Absence of one-man management and ruless or, on the contrary, principal - the petty tyrant.
Philosophy ETL is good that mastering professionally philosophy and the tool, it is possible to work with any databases.
However precisely also it is possible to run into a terrible not documentary trash from thousand small squares and workflow - disassemble originally the formulated business logic and that actually is twisted in ETL
ELT is for adherents of a specific DBMS, in a greater degree possibility on itself. And can it is simply banal laziness to master new technologies or at the company there is no money for purchase ETL and other others 101 reason can be.
However, it is possible to pervert any to a method and the tool
