26 research outputs found

    НовыС Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΡ‹ лСксичСской ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ запросов

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    New algorithms for query modifications are proposed. These algorithms involve the lexical optimization based on the mathematical transformations that have never been used for the query optimization before.ΠŸΡ€Π΅Π΄Π»Π°Π³Π°ΡŽΡ‚ΡΡ Π½ΠΎΠ²Ρ‹Π΅ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΡ‹ ΠΌΠΎΠ΄ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ запроса. Π­Ρ‚ΠΈ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΡ‹ Π²ΠΊΠ»ΡŽΡ‡Π°ΡŽΡ‚ Π»Π΅ΠΊΡΠΈΡ‡Π΅ΡΠΊΡƒΡŽ ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΡŽ, ΠΎΡΠ½ΠΎΠ²Π°Π½Π½ΡƒΡŽ Π½Π° матСматичСских прСобразованиях, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Ρ€Π°Π½Π΅Π΅ Π½Π΅ использовались для Π·Π°Π΄Π°Ρ‡, связанных с ΠΏΡ€Π΅ΠΎΠ±Β¬Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ запросов

    ΠžΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΡ ΠΊΠΎΠ½ΡŠΡŽΠ½ΠΊΡ‚ΠΎΠ² условий Π² составС запросов

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    A new algorithm for query optimization is proposed. This algorithm simplifies queries restriction containing multi-attribute conditions. It also solves the problem of "Condition AND Conjunction of conditions" expressions.ΠŸΡ€Π΅Π΄Π»Π°Π³Π°Π΅Ρ‚ΡΡ Π½ΠΎΠ²Ρ‹ΠΉ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ ΠΎΠΏΡ‚ΠΈΠΌΠΈΠ·Π°Ρ†ΠΈΠΈ запроса. Π­Ρ‚ΠΎΡ‚ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ сокращаСт ограничСния запросов, содСрТащих ΠΌΠ½ΠΎΠ³ΠΎΠ°Ρ‚Ρ€ΠΈΠ±ΡƒΡ‚Π½Ρ‹Π΅ условия. Он Ρ‚Π°ΠΊΠΆΠ΅ Ρ€Π΅ΡˆΠ°Π΅Ρ‚ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡƒ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ «УсловиС AND ΠšΠΎΠ½ΡŠΡŽΠ½ΠΊΡ†ΠΈΡ условий»

    New algorithms for query modifications

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    New algorithms for query modifications are proposed. These algorithms involve the lexical optimization based on the mathematical transformations that have never been used for the query optimization before

    Optimization of Queries Containing Conjunctions of Conditions

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    A new algorithm for query optimization is proposed. This algorithm simplifies queries restriction containing multi-attribute conditions. It also solves the problem of "Condition AND Conjunction of conditions" expressions

    Hochkonversion von Reduktionsmitteln

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