From the preface:
This book is the first comprehensive survey of the field of constraint
databases. Constraint databases are a fairly new and active area
of
database research. The key idea is that constraints, such as linear
or
polynomial equations, are used to represent large, or even infinite,
sets in a compact way. The ability to deal with infinite sets makes
constraint databases particularly promising as a technology for
integrating spatial and temporal data with standard relational
databases. Constraint databases bring techniques from a variety
of
fields, such as logic and model theory, algebraic and computational
geometry, as well as symbolic computation, to the design and analysis
of data models and query languages.
The book is a collaborative effort involving many authors who have
contributed chapters on their fields of expertise. Despite this,
the
book is designed to be read as a whole, as opposed to a collection
of
individual surveys. In particular, the terminology and the style
of
presentation have been standardized, and there are multiple
cross-references between the chapters.
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