What exactly is indexing

I’m a new user, can someone explain exactly what indexing is.please, There is so much talk about how important it is in these forums, Thank you

Indexing isn’t any more important then importing.
Indexing adds a link to files outside the database versus copying a file into the internals of a database.

However, do not just dive in without careful consideration. Read the Help > Documentation > In & Out > Importing & Indexing section, especially the Indexing and the filesystem

Thank you BLUEFROG, I’ll give it a read.

You’re welcome.

For more real-world info, search for posts by @Greg_Jones on the forums as he has used indexing exclusively for years.