What do these do? I am constantly told by IT we need data catalogues, they talk about it, they invest money, but I have never seen the results. Me and my team k

What do these do? I am constantly told by IT we need data catalogues, they talk about it, they invest money, but I have never seen the results. Me and my team keep most metadata info of tables in json files, not pretty but at least I can see what it does