electronic information service vs electronic database

electronic information service and electronic database both are nouns.

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

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

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

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

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