I was wondering whether 'updation' is correct English or not.
Sample sentence: I was involved in the updation of the website.
The word updation was added to the Oxford English Dictionary in 2018. http://www.oed.com/view/Entry/72885148
No, the -(t)ion derivational suffix can't be applied to update. Derivations are almost all irregular, and restricted in the words they can appear on.
Since update is a modern word, it follows the modern English trend of Zero-Derivation, like what Calvin calls "Verbing". Hence, as Shyam points out, the proper noun form of the verb update is also update.
Updation is incorrect. This word is mainly used in India instead of updating.
It's certainly not Standard English, but I have come across this word before, always in correspondence with IT engineers based in India.
I have a theory that it comes from SQL.
SQL (Structured Query Language) is a programming language widely used in business database systems. It has three main command words: INSERT, UPDATE and DELETE. insertion and deletion are commonly used nouns that describe the actions performed by the INSERT and DELETE commands, and business English users are very fond of words with Latin-sounding endings, so it would be natural for a non-native speaker to extend this group to include UPDATE.
In Standard English, the noun for describing the operation of the UPDATE command is simply update.
No. Update is the correct noun form. You could say,
I was involved in the update of the website.
OR
I was involved in updating the website.
OneLook finds it in three online dictionaries, although one of them (Dictionary.com) specifically tags it as informal. Wordnik has some quotes using the word, but most of those are from forums and blogs - caveat emptor.
I checked the OED; I couldn't find it there. (If someone can find it in there, I'll gladly make an updation to this answer).
I would say it's not a standard word, but there can be some pretty heated debates in this community about what constitutes a "correct word." Sometimes words can be like stars; it's difficult to tell when and how they were born.