"EBSCO Discovery Service creates a unified, customized index of an institution's information resources, and provides access via a single search box. Metadata is harvested from both internal (library) and external (vendors) sources creating a pre-indexed service of unprecedented size and speed. The service is indexed directly on EBSCO servers allowing for exceptionally fast search response times. Users are also able to leverage the familiar powerful features of the EBSCOhost user experience. EDS provides everything the researcher needs in one place-a single interface for discovery of a library's entire collection and powerful features that heighten the research experience. "
This hosted service represents a new generation metasearch service. It displays results quickly and simply, and gives the searcher unparalleled control over the search experience. These benefits are accomplished through features such as
* simultaneous searching of up to 100 databases almost instantly
* relevance ranking, sorting and merging of records across databases
* processing of returned hits at the rate of 2000 records per second
* faceted searching by resource, subject, author, date or any library-defined element
MasterKey's simplicity and power provide a metasearch experience unequaled by any other metasearch service."
From Glenn E. Patton:
"To get a sense of which MARC data elements are used in the various indexes for WorldCat, take a look at "Searching WorldCat Indexes" (http://www.oclc.org/support/documentation/worldcat/searching/searchworl
dcatindexes/). Click on "List of Fields and Subfields Indexed in Tag Order" in the navigation bar on the left of the screen to see a list of MARC elements and the indexes in which they are used."
JSTOR specializes in making available the back issues of journals in a wide variety of humanities and social science disciplines. Issues are available both as images and as text, making searching possible both within each title and across the whole database.
Penn's subscription currently includes all the available collections:
- the Arts & Sciences Collection I, II, III, IV and the complement
- the Business Collection
- the Ecology & Botany Collection
- the General Science Collection
- the Language and Literature Collection
- the Music Collection
Access to journals from JSTOR is restricted to current Penn faculty, staff and students.
Printing from the JSTOR database requires downloading a helper application called JPrint.
-from CSA Databases
The American Psychological Association's comprehensive indexing and abstracting service for the professional and scholarly literature in psychology and related fields. Coverage is worldwide. Sources are in English and over thirty languages.
Holdings: 1887 to the present. Updated monthly.
The ISI Citation Indexes include the Science Citation Index, the Social Science Citation Index, and the Arts & Humanities Citation Index.
Search for specific articles by subject, author, journal, and/or author address, as well as for articles that cite a known author or work.
Holdings: Science Citation Index Expanded (SCI-EXPANDED)--1945-present
Social Sciences Citation Index (SSCI)--1956-present
Arts & Humanities Citation Index (A&HCI)--1975-present
CQL::Parser is a Perl module for parsing Common Query Language statements.
CQL is a formal language for representing queries to information retrieval systems such as web indexes, bibliographic catalogs and museum collection information. The design objective is that queries be human readable and writable, and that the language be intuitive while maintaining the expressiveness of more complex languages.
CQL::Parser will allow you validate statements, and parse them into a parse tree which you can then programatically walk and use. For your convenince there are methods for converting the CQL parse tree into Swish and Lucene queries as well as XCQL (an XML representation of CQL).use CQL::Parser;
my $parser = CQL::Parser->new();
my $root = $parser->parse('dc.creator="clinton"');
my $swish = $root->toSwish();
my $lucene = $root->toLucene();
my $xcql = $root->toXCQL();