Title
Extended SQL for manipulating clinical warehouse data.
Abstract
Health care institutions are beginning to collect large amounts of clinical data through patient care applications. Clinical data warehouses make these data available for complex analysis across patient records, benefiting administrative reporting, patient care and clinical research. Data gathered for patient care purposes are difficult to manipulate for analytic tasks; the schema presents conceptual difficulties for the analyst, and many queries perform poorly. An extension to SQL is presented that enables the analyst to designate groups of rows. These groups can then be manipulated and aggregated in various ways to solve a number of useful analytic problems. The extended SQL is concise and runs in linear time, while standard SQL requires multiple statements with polynomial performance. The extensions are extremely powerful for performing aggregations on large amounts of data, which is useful in clinical data mining applications.
Year
Venue
Keywords
1999
JOURNAL OF THE AMERICAN MEDICAL INFORMATICS ASSOCIATION
programming languages,database management systems
Field
DocType
Issue
Data warehouse,Health care,Row,Data science,SQL,Computer science,Health services research,Patient care,Time complexity,Schema (psychology)
Conference
SUPnan
ISSN
Citations 
PageRank 
1067-5027
16
1.75
References 
Authors
6
2
Name
Order
Citations
PageRank
Stephen B. Johnson1161.75
Damianos Chatziantoniou2162.76