1 Mental Health Center, National Center for Mental Disorders, West China Hospital, Sichuan University, Chengdu, China 2 Department of Clinical Research Management, West China Hospital of Sichuan ...

Background: Population ageing is a global phenomenon, associated with declining birth rates and increased life expectancy, with particularly pronounced effects in European countries such as Portugal.

Everyone knows and loves the first three normal forms. We go through the process of normalization to remove redundancies in our data structures. But the redundancies we remove have nothing to do with ...

aSchool of Public Health, Peking University Health Science Center, Beijing, China bCenter for Healthy Aging Transdisciplinary Sciences, China Center for Health Development Studies, Peking University, ...

It would be valuable to have a functional_dependency generic test in dbt-utils that ensures one or more "determinant" columns uniquely determine another "dependent" column. The test should fail if any ...

Databases are essential for storing and retrieving structured data supporting business intelligence, research, and enterprise applications. Querying databases typically requires SQL, which varies ...

Abstract: A concept of functional dependency in XML documents based on constraint-tree is proposed. The definition proposed in our paper overcomes the shortcomings of previous definitions in the ...