redundant (adjective) - not or no longer needed or useful; superfluous: an appropriate use for a redundant church many of the old skills had become redundant. superfluous (adjective) - unnecessary, especially through being more than enough: the purchaser should avoid asking for superfluous information.

What considered redundant?

Data redundancy is a condition created within a database or data storage technology in which the same piece of data is held in two separate places. ... Whenever data is repeated, it basically constitutes data redundancy. Data redundancy can occur by accident but is also done deliberately for backup and recovery purposes.

What is the difference between superfluous and extraneous?

As adjectives the difference between extraneous and superfluous. is that extraneous is not belonging to, or dependent upon, a thing; without or beyond a thing; foreign while superfluous is in excess of what is required or sufficient.