Research Updates

PubMed (My NCBI)

Scopus

Web of Science

Journal Coverage

Over 5,000 journals in the areas of medicine, nursing, dentistry, veterinary medicine, the health care system and preclinical sciences.

Over 15,000 journals in the areas of science, technology, medicine, psychology, sociology, and economics.

Over 8,500 journals in the areas of science, technology, medicine, psychology, sociology, and economics.

Years of coverage

17 million records from the mid 1950's

33 million records from 1869 (cited references from 1996 only)

37 million records from 1900 (Social Sciences Citation Index (SSCI)--1956-present)

Type of Updates

Subject, author, or journal Table of Contents (TOC)

Subject, author, cited reference or Journal TOC

Subject, author, cited reference or Journal TOC

Update Frequency

Daily, Weekly, or Monthly

Daily, Weekly, or Monthly

Weekly or Monthly

Updates per Account

Unlimited

Unlimited

Unlimited

Update Email formats

HTML or text

HTML or text

HTML or text

Update RSS Feed Availability

Yes

Yes

Yes

Response to zero results

User choice

Notified

Notified

Save Format for Exporting to Citation Software

MEDLINE

Automatic

ISI Research Soft, Full Record Field Tagged

Databases Searched

PubMed, Nucleotide, Genome, Protein, and other NCBI databases

Scopus includes records from MEDLINE, Embase, Compendex, and Geobase

Web of Science includes records from Science Citation Index and Social Science Citation Index