I've gone through the effort to get some certs,and i will not bore anyone with the alphabet soup.
My feelings are mixed.
I'm an experienced DBA. For me,The lower layer SQL certs did not test my DBA experience.
They tended to ask questions in a weird, roundabout way to obfuscate the focus of the question, or knowledge.
They asked edge questions that really required either doing the labs, on the assumption that if you know the edge cases, you must know the meat and potatoes.
They are obfuscated on purpose, so that it is more difficult/rare to get the cert, so it has some value, i guess.
The higher level certs I actually felt tested better scenarios and knowledge. they went into deeper use cases that touched on multiple knowledge points.
At the end of it all, i held these two views:
The certs are worth the cost of the electrons they are printed on.
The certs show a person that goes above and beyond the everyday to make themselves better.
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