Randomized controlled trials are virtually non-existent in lung cancer surgery, but large, comprehensive, and well kept databases exist.
Under U.S. law, marketing databases exist under almost no legal restrictions concerning accuracy, access, or confidentiality.
While comprehensive databases exist for contemporary data, they usually lack a historic dimension.
June 18 , 2013Updated at 6.13pm BST 5.35pm BST Outgoing Rep. Michele Bachmann is quizzing the panel as to whether databases exist with video and audio of Americans.
The researchers had to rely on food-availability data for this study instead of consumption data because no large-scale international databases exist to measure food consumption directly.
"Most of my clients have no idea these databases exist, let alone what they did to end up in them," said Kristen Euretig, a financial counselor with Neighborhood Trust Financial Partners, a nonprofit group in New York.
While some local or regional databases exist for some taxonomic groups, there are no effective geographic databases designed to detect and monitor all species of non-native plants, animals, and pathogens.
It is now widely accepted that these tools will need to be DNA-based assays (in contrast to identification at the species level, where biochemical based assays are still widely used, even though very powerful 16S DNA sequence databases exist).
Most databases exist primarily to service a specific application.
Germany: Several green job databases exist: oekojobs.de and greenjobs.de are the largest ones.
It's simply inefficient to query multiple databases manually, or to even know what databases exist inside a large organization.
