In telecommunications, a data bank is a repository of information on one or more subjects that is organized in a way that facilitates local or remote information retrieval. A data bank may be either centralized or decentralized. In computers the data bank is the same as in telecommunication (i.e. it is the repository of data. The data in the data bank can be things such as credit card transactions or it can be any data base of a company where large quantities of queries are being processed on daily bases).
Data bank may also refer to an organization primarily concerned with the construction and maintenance of a database.
References
Data bank Wikipedia(Text) CC BY-SA