Identifying whether a sequence is Novel or not

Question

[Mustafa]

Hello, I am fairly new to bioinformatics.. I was given a random sequence from pubmed and was told to find, how to identify whether the sequence is Novel or not.

I am not really sure on how to do this, so any kind of help would be appreciated.

[mohammadhassanj]

Read about BLAST

https://omicstutorials.com/basic-local-alignment-search-tool-blast-for-bioinformatics/