Catálogo

Abstracting and indexing services ;Bibliographic database producers ;Current awareness services Secondary information producers

Base de datos bibliogr?fica
Bibliograf
A printed list of documents containing formal descriptions of the documents.
Cat?logo
An ordered compilation of bibliographic descriptions and sufficient information to afford access to the documents.
Centro de intercambio de informaci?n
Compilaci?n bibliogr?fica
Difusi?n selectiva de informaci?n
A service which continually disseminates documents, references, "abstracts" or data selected according to the interest profiles of the users.
Indice
An ordered reference list of the contents of a file or document together with references for identification or location of those contents.
Resumen
The usually non-critical indication of the subject contents of a document, aiming to permit the user a decision about the relevance of the document.
Servicio de informaci?n
Sistema de informaci?n cient?fica