• database theory, a conjunctive query is a restricted form of first-order queries using the logical conjunction operator. Many first-order queries can be written...
    15 KB (1,922 words) - 02:45, 12 January 2025
  • relational databases, a Boolean conjunctive query is a conjunctive query without distinguished predicates, i.e., a query in the form R 1 ( t 1 ) ∧ ⋯ ∧ R...
    1 KB (243 words) - 05:13, 14 January 2025
  • (alpha-)acyclic conjunctive query. The algorithm is named after Mihalis Yannakakis. The algorithm relies on a join tree of the query, which is guaranteed...
    5 KB (661 words) - 01:50, 28 May 2025
  • Datalog (category Query languages)
    formally, non-recursive Datalog corresponds precisely to unions of conjunctive queries, or equivalently, negation-free relational algebra. A Datalog program...
    59 KB (4,898 words) - 13:02, 17 June 2025
  • to the query on the database. If the queries are Boolean queries, i.e., queries have a yes or no answer (for example, Boolean conjunctive queries) then...
    5 KB (593 words) - 21:21, 27 September 2024
  • integration, "query containment" represents an important property of conjunctive queries. A query A {\displaystyle A} contains another query B {\displaystyle...
    32 KB (3,795 words) - 13:08, 4 June 2025
  • explores foundations of query optimization and data integration. Here most work studied conjunctive queries, which admit query optimization even under...
    3 KB (372 words) - 18:41, 13 May 2025
  • Since the homomorphism problem is equivalent to conjunctive query evaluation and conjunctive query containment, these two problems are equivalent to...
    29 KB (4,485 words) - 07:30, 19 October 2024
  • University Press Congressional Quarterly, a US publishing company Conjunctive query, in relational databases and database theory CQ (call), in radio communications...
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    Context-aware store. Conjunctive Query Any query that doesn't limit the store to search within a named context only. Such a query expects a context-aware...
    25 KB (3,219 words) - 15:17, 26 January 2025
  • area of active research.[1][2] Every CSP can also be considered as a conjunctive query containment problem. A similar situation exists between the functional...
    29 KB (3,364 words) - 22:02, 19 June 2025
  • and y are siblings. Conjunctive regular path queries aka CRPQ, which are conjunctive queries whose atoms are RPQs. Such queries make it possible to test...
    5 KB (658 words) - 21:01, 26 May 2025
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    And-inverter graph AND gate Bitwise AND Boolean algebra Boolean conjunctive query Boolean domain Boolean function Boolean-valued function Conjunction/disjunction...
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  • Boolean algebra Algebraic normal form Boolean conjunctive query Canonical form (Boolean algebra) Conjunctive normal form Disjunctive normal form Formal system...
    6 KB (271 words) - 23:18, 23 July 2024
  • the structure representing the query is the same thing as a solution to the query. This shows that the conjunctive query problem is also equivalent to...
    35 KB (5,097 words) - 21:36, 24 March 2025
  • semantics and query answering, R Fagin, PG Kolaitis, RJ Miller, L Popa, Theoretical Computer Science 336 (1), 89-124 Conjunctive-query containment and...
    7 KB (630 words) - 20:59, 26 May 2025
  • other social tagging) Query expansion. A 2012 study by Zhao and Callan using expert created manual conjunctive normal form queries has shown that searchonym...
    3 KB (408 words) - 07:36, 7 January 2025
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    Valiant, Gregory; Valiant, Paul (2012), "Size and treewidth bounds for conjunctive queries", Journal of the ACM, 59 (3): A16:1–A16:35, doi:10.1145/2220357.2220363...
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    fundamental problems in computer science (e.g., problems concerning conjunctive queries in relational databases, or constraint satisfaction problems). The...
    6 KB (763 words) - 09:40, 13 July 2024
  • resolution proof. Used in this way, goal clauses are similar to conjunctive queries in relational databases, and Horn clause logic is equivalent in computational...
    11 KB (1,283 words) - 17:29, 30 April 2025
  • monotonic query is a select-project-join query containing only conditions of equality (also known as conjunctive queries). Examples of non-monotonic queries are...
    3 KB (432 words) - 18:32, 16 April 2024
  • graph theory. Enumerating the answers to a database query, for instance a conjunctive query or a query expressed in monadic second-order. There have been...
    9 KB (1,189 words) - 05:20, 7 April 2025
  • Thumbnail for Georg Gottlob
    evaluating conjunctive queries on relational databases is equivalent to the constraint satisfaction problem. His recent work on XML query languages (notably...
    13 KB (1,048 words) - 04:06, 28 November 2024
  • laws Algebraic normal form Canonical form (Boolean algebra) Boolean conjunctive query Boolean-valued model Boolean domain Boolean expression Boolean ring...
    25 KB (2,119 words) - 22:15, 10 April 2025
  • implemented on the basis of constraint search or different types of conjunctive query-based approaches. In a navigation-based recommender, user feedback...
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  • main query interface looked like a traditional file system interface via a virtual directory system that interpreted a path as a conjunctive query. Their...
    10 KB (668 words) - 22:38, 14 March 2024
  • Dexter Kozen and Larry Stockmeyer), conjunctive queries in databases (with Philip M. Merlin), computable queries (with David Harel), and multiparty communication...
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  • Bayesian probability Consciousness Markov kernels Signal-flow graphs Conjunctive queries Bidirectional transformations Categorical quantum mechanics Quantum...
    27 KB (3,699 words) - 01:39, 7 May 2025
  • Québec), a former political party in Quebec, Canada Union of conjunctive queries, a query language on relational databases This disambiguation page lists...
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  • Thumbnail for Nicola Leone
    decomposition, a framework for obtaining tractable structural classes of conjunctive queries, and a generalisation of the notion of tree decomposition from graph...
    6 KB (436 words) - 21:44, 7 May 2025