Source Publication (e.g., journal title)
Online Vol. 17
Users of online databases frequently have several options available for searching the same database. Selection of the appropriate access method can be simplified through the evaluation of seven criteria. Price, time periods covered, and frequency and timing of updates should be considered first. Variations in file structure among online systems should also be evaluated. Finally, the online systems themselves should be evaluated for their support systems and search features.
Tenopir, Carol and Hover, Katie, "When Is the Same Database Not the Same? Database Differences Among Systems." (1993). School of Information Sciences -- Faculty Publications and Other Works.