electronic database vs electronic information service

electronic database and electronic information service both are nouns.

Word	Noun	Adjective	Verb	Adverb
electronic database	Yes	No	No	No
electronic information service	Yes	No	No	No

As nouns, electronic database and electronic information service are synonyms defined as:

electronic database and electronic information service: (computer science) a database that can be accessed by computers

Other synonyms of electronic database include computer database, on-line database.

electronic database (noun)	electronic information service (noun)
(computer science) a database that can be accessed by computers	(computer science) a database that can be accessed by computers