Henry F. Korth studies database management systems, including database transactions and database query processing in parallel and distributed settings. His Lehigh profile records these research areas and work on database storage and aggregation systems.[ref]
https://engineering.lehigh.edu/faculty/henry-hank-korth. Research contributions and database-system projects
With Abraham Silberschatz and S. Sudarshan, he coauthored teaching material on the relational model. A relation is a set of tuples, so mathematical projection removes repeated result tuples; a query language or implementation that retains duplicates has different semantics unless duplicate removal is requested. For example, projecting the department column of two employee records from the same department gives one tuple under set semantics. Keeping this distinction explicit helps connect a declarative query to its actual result.[ref]
Relational Model slides for Database System Concepts by Abraham Silberschatz and others. Relational Algebra, project operation and duplicate elimination
Portrait of Henry F. Korth
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