conjunctive query
1Conjunctive query — In database theory, a conjunctive query is a restricted form of first order queries. A large part of queries issued on relational databases can be written as conjunctive queries, and large parts of other first order queries can be written as… …
2Boolean conjunctive query — In the theory of relational databases, a Boolean conjunctive query is a conjunctive query without distinguished predicates, i.e., a query in the form , where each Ri is a relation symbol and each ti is a tuple of variables and constants; the… …
3RDFLib — Infobox Software name = RDFLib developer = Daniel Krech latest release version = 2.4.0 latest release date = April 4, 2007 operating system = Cross platform genre = Library license = BSD website = [http://rdflib.net/ http://rdflib.net/] RDFLib is …
4Data integration — involves combining data residing in different sources and providing users with a unified view of these data.[1] This process becomes significant in a variety of situations, which include both commercial (when two similar companies need to merge… …
5Complexity of constraint satisfaction — The complexity of constraint satisfaction is the application of computational complexity theory on constraint satisfaction. It has mainly been studied for discriminating between tractable and intractable classes of constraint satisfaction… …
6Database theory — encapsulates a broad range of topics related to the study and research of the theoretical realm of databases and database management systems. Theoretical aspects of data management include, among other areas, the foundations of query languages,… …
7Structure (mathematical logic) — In universal algebra and in model theory, a structure consists of a set along with a collection of finitary operations and relations which are defined on it. Universal algebra studies structures that generalize the algebraic structures such as… …
8List of NP-complete problems — Here are some of the more commonly known problems that are NP complete when expressed as decision problems. This list is in no way comprehensive (there are more than 3000 known NP complete problems). Most of the problems in this list are taken… …
9Liste De Problèmes NP-Complets — Ceci est une liste des problèmes NP complets les plus connus en théorie de la complexité des algorithmes, exprimés sous la forme d un problèmes de la décision. Puisqu on connaît plus de 3000 problèmes NP complets, cette liste n est pas exhaustive …
10Liste de problemes NP-complets — Liste de problèmes NP complets Ceci est une liste des problèmes NP complets les plus connus en théorie de la complexité des algorithmes, exprimés sous la forme d un problèmes de la décision. Puisqu on connaît plus de 3000 problèmes NP complets,… …
