These differences are multiplied and widened when moving from input stage to output stage to such an extent that online catalogs can be considered as a significant departure from manual catalogs. The redesign for use in the online environment of bibliographical standards cataloging codes, MARC formats and ISBDs which are based on the concept of the card catalog should be based on the conceptual as well as the practical differences between the online catalog and the card catalog.
Fattahi, R. Report bugs here. Please share your general feedback. You can join in the discussion by joining the community or logging in here.
You can also find out more about Emerald Engage. It provides a complete data of library holding which is periodically updated. Both book and COM are inflexible in changing, they cannot be added or deleted until the new editions are produced.
But, by which they are computer-produced, they are flexible in making changes of entries. With a certain command can be made to change many entries. To meet the users demand, COM should be made in many copies. They are also easy to be sent to other libraries or information agencies. The online catalogue is the newest. The bibliographic records stored in the computer memory are printed on the video screen in response to a request from a user.
Online catalogue is the most flexible and current. Additions, deletions, and changes of entries can be made at any time, and the results are immediately available to the users. However, it is quite expensive to build up compared with other three types. The primary advantage of the online catalogue is that database can be searched in almost any item of information of interest to the users or the users can retrieve information in a variety of ways, and it provides very rapid search.
Other advantages are, such as : it can be used from far a way location, so that the users can access a local, national and international cataloguing database; filing of indexes is no longer a consideration; database in online catalogue can be updated online or at frequent intervals, as needed; provided instructional help; provided links to card form catalogues, reference help and circulation; online database, with a certain instruction in the system, can be produced in any other physical form of catalogues; and global changing can be made.
However, some of the disadvantages are, for example: it is much more sensitive in spelling, any error means unexpected or different information is printed on the computer screen; its users may be frustrated by getting a quite few citations or sometimes too many citations; it requires a new way of getting information, or training for its users; and it will be unavailable if there is no power or if the computer breaks downs.
References :. Fayen, Emily Gallup. The online catalog : improving public access to library materials. Hunter Eric J. London : Clive Bingley, Wynar, Bohdan S. The online library catalog evolved from a printed source, the library card catalog.
Before the advent of online catalogs, library catalogs were pieces of furniture that contained numerous small drawers. In these drawers were contained the records of particular items in the library. These records were printed on small 3"X5" cards and each element of that record had an individual card produced for it. So for each item in the library there was:.
0コメント