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What is Static vs. Dynamic Integrity Constraints

Chapter 153
Encyclopedia of Information Science and Technology, Second Edition
Static integrity constraints are semantic properties that are invariant across evolving database states. Dynamic integrity constraints refer explicitly to several (mostly consecutive) states or to their transitions, typically involving temporal or procedural constructs.
Published in Chapter:
Database Integrity Checking
Hendrik Decker (Universidad Politécnica de Valencia, Spain) and Davide Martinenghi (Free University of Bozen/Bolzano, Italy)
Copyright: © 2009 |Pages: 6
DOI: 10.4018/978-1-60566-026-4.ch153
Abstract
Integrity constraints (or simply “constraints”) are formal representations of invariant conditions for the semantic correctness of database records. Constraints can be expressed in declarative languages such as datalog, predicate logic, or SQL. This article highlights the historical background of integrity constraints and the essential features of their simplified incremental evaluation. It concludes with an outlook on future trends.
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