updation of locate database

[resistantgnome]

1) When does the database of locate command gets updated?
2) Do I ever need to change the update time of database?
3) If yes, the how?
4) Why do I need a find command when I can search things faster with locate command? Is there any other benefit of find command?

[forger]

1-3.

man locate

DESCRIPTION
locate reads one or more databases prepared by updatedb( 8 ) and writes file names matching at least one of the PATTERNs to standard output, one per line.

man updatedb

DESCRIPTION
updatedb creates or updates a database used by locate(1). If the database already exists, its data is reused to avoid rereading directories that have not changed.
updatedb is usually run daily by cron( 8 ) to update the default database.

So to update it, all you have to do is:

sudo updatedb

4. I don't know if it's faster than locate, but find can help you find something specific in a specific directory, recursive or not (-depth) and so on..
To see how to use it you'll have to read the manual with the list of command arguments/operators:

man find