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Query execution

Distributed query execution system for Transactional Database using Lookup Table

Distributed query execution system for Transactional Database using Lookup Table

... Abstract- As data volumes are incrementing rigorously, it is essential to store such large amount of data distributed across many machines. In OLTP databases, the most common strategy for scaling database workload is to ...

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Effective Cost Models for Predicting Web Query Execution Cost

Effective Cost Models for Predicting Web Query Execution Cost

... classical query optimizers use sophisticated cost models to compute the cost of executing a particular ...This query cost is composed of individual cost of the operators that are part of the final ...

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Estimation of Query Execution Time in Milli Seconds, Micro Seconds and Nano Seconds for Oracle, MsSQL and MsAccess Relational Databases

Estimation of Query Execution Time in Milli Seconds, Micro Seconds and Nano Seconds for Oracle, MsSQL and MsAccess Relational Databases

... the query estimation time in milli seconds (10 -3 ...the query in relational databases, the user interact with structural query language ...about query of the Relational Databases and get the ...

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Optimizing XML information retrieval query execution
at the physical level

Optimizing XML information retrieval query execution at the physical level

... The integrated system – named PF/Tijah to demonstrate that it is an extension to Pathfinder – exposes IR querying functionality at the conceptual level as a set of XQuery functions that allow a predefined collection to ...

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Survey on Optimization of Domain Specific Query Execution Time on Big Data using MAP Reduce

Survey on Optimization of Domain Specific Query Execution Time on Big Data using MAP Reduce

... Enormous Data concern extensive volume, intricate, developing information sets with various, self-ruling sources. With the quick advancement of systems administration, informatio[r] ...

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Backing off, NLP and Indexing Methods for String Matching in Query Execution

Backing off, NLP and Indexing Methods for String Matching in Query Execution

... B. Natural Language Processing (NLP) Technique It is a field of computer science, artificial intelligence and linguistics concerned with the interactions between computers and human (natural) languages. It facilitates ...

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Construction of a Database Prototype for Query Execution with Enhanced Privacy and Regulatory Compliance

Construction of a Database Prototype for Query Execution with Enhanced Privacy and Regulatory Compliance

... The impact of privacy requirements in the development of modern applications is increasing very quickly. Many commercial and legal regulations are driving the need to develop reliable solutions for protecting sensitive ...

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Distributed Query Execution With Strong Privacy Guarantees

Distributed Query Execution With Strong Privacy Guarantees

... Utility: e sums revealed during DStress execution are not intended to be out- puts of the system – we just treat them as such to keep track of information leakage. Hence, we don’t care about the utility of the ...

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Ontology Based Fuzzy Query Execution

Ontology Based Fuzzy Query Execution

... a query is a set of descriptions, conditions and rules defined as a set of instances of a Fuzzy Query ...this query can be viewed as a SQLf statement where any element of the sentence is modeled in ...

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Simulation of Boolean Query Implementation Strategy in Lucene

Simulation of Boolean Query Implementation Strategy in Lucene

... the execution efficiency of optimization is ...the query expression is relatively simple, the machine load is relatively low, so the improvement of execution efficiency is not ...and query ...

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Finding Data Should be Easier than Finding Oil

Finding Data Should be Easier than Finding Oil

... SQL query created in the previous step is passed on to our query planning and execution module that deconstructs the SQL query and orchestrates the evaluation of the query parts to the ...

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A REVIEW ON VIRTUAL DATABASE SYSTEM USING MAP-REDUCE TECHNOLOGY

A REVIEW ON VIRTUAL DATABASE SYSTEM USING MAP-REDUCE TECHNOLOGY

... Now a day’s the Data is stored in geographically decentralize manner. It may have heterogeneous data sources. Data integration is used to combine data from different resources and provide users with a unified view of ...

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Towards a Statistical Evaluation of PigLatin Joins

Towards a Statistical Evaluation of PigLatin Joins

... a query language similar to traditional structured query language ...evaluate query execution time by using a set of join queries from the TPC-DS database ...

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Partitioning of Query Processing in Distributed Database System to Improve Throughput

Partitioning of Query Processing in Distributed Database System to Improve Throughput

... - Query processing in distributed system calls for the transmission of records among computers in ...general query processing ...of query to optimize the throughput on distributed ...and query ...

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Reducing Execution Time of Distributed SELECT Query in Heterogeneous Distributed Database using Genetic Algorithm

Reducing Execution Time of Distributed SELECT Query in Heterogeneous Distributed Database using Genetic Algorithm

... In this work we concentrate on utilizing Genetic Algorithm for finding optimized query execution plan for distributed SELECT queries. Selecting the right set of plans for queries using Genetic Algorithm ...

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Neural Enquirer: Learning to Query Tables in Natural Language

Neural Enquirer: Learning to Query Tables in Natural Language

... given query Q ˜ is semantically parsed into an “executable” represen- tation, which is often expressed in certain logical form Z ˜ ...and query execution become extremely ...complex query into ...

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An efficient multi join query optimization for relational database management system using swarm intelligence approaches

An efficient multi join query optimization for relational database management system using swarm intelligence approaches

... Join Query Optimization (MJQO) is becoming the centre of attention in the context of Database Management System ...the Query Execution Plan (QEP), and moving processing abounded database servers to ...

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HEURISTIC APPROACH FOR OPTIMIZATION OF LOAD BALANCING IN DISTRIBUTED SYSTEMS

HEURISTIC APPROACH FOR OPTIMIZATION OF LOAD BALANCING IN DISTRIBUTED SYSTEMS

... The development of a distributed database system requires effective solutions to many complex and interrelated design problems. The cost dependencies between query optimization and data allocation on distributed ...

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QUERY PROCESSING IN A RELATIONAL DATABASE MANAGEMENT SYSTEM

QUERY PROCESSING IN A RELATIONAL DATABASE MANAGEMENT SYSTEM

... database query languages, in particular of relational algebra, and of file systems, including some basic knowledge of index ...1, query processing fills the gap between database query languages and ...

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Title: A Framework for Optimizing Distributed Database Queries Based on Stochastic Fractal Search

Title: A Framework for Optimizing Distributed Database Queries Based on Stochastic Fractal Search

... distributed query processing first of all initial query is decomposed into fragment queries which operate on fragments rather than on global relation(data ...A Query Optimizer is used to generate ...

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