definition of aggregate query processing

  • Aggregate Query Processing for Semantic Web Databases:

    Aggregate Query Processing for Semantic Web Databases: an Algebraic Approach. ... In this paper, we study the meaning and implementation of grouping and aggregate queries over RDF graphs. We first ...

  • Robust and Efficient Aggregate Query Processing in ...

    2008-5-8 · Query processing on continuous aggregates. In this work, we assume sensor nodes have been organized into a spanning tree and each sensor will generate a sensing value in each round (a short time period). After the creation of a network topology, users can pose a continuous aggregate query, such as AVG, to the network.

  • aggregate query processing definition | Prominer

    Approximate Query Processing: No Silver Bullet - Microsoft19 May 2017 An approximate query processing (AQP) scheme can be char- acterized by . Online aggregation methods [28, 37, 50, 53, 57, 74] also uniformly sample the .. cessing. In fact, a

  • What is Data Aggregation?

    2022-1-4 · Aggregate data is typically found in a data warehouse, as it can provide answers to analytical questions and also dramatically reduce the time to query large sets of data. Data aggregation is often used to provide statistical analysis for groups of people and to create useful summary data for business analysis .

  • aggregate query - English definition, grammar ...

    Learn the definition of 'aggregate query'. Check out the pronunciation, synonyms and grammar. Browse the use examples 'aggregate query' in the great English corpus.

  • Three-Level Processing of Multiple Aggregate Continuous ...

    In this study, to enable window-based shared processing of continuous queries, a window reuse algorithm for a multi-query environment based on pace and

  • Aggregate - Wiley Online Library

    Aggregate aims to publish on a wide variety of topics that focus on the processes of aggregation of atoms, ions, molecules, oligomers, polymers, clusters, particles, gels, hybrids, composites, cells, pathogens, etc. in a broad range of areas such as chemistry, physics, materials, engineering, biology, life science and so forth. Aggregates often behave differently from, and

  • R语言-数据整形之aggregate函数 - 银河统计 - 博客园

    2016-5-25 · R语言中aggregate函数 前言 这个函数的功能比较强大,它首先将数据进行分组(按行),然后对每一组数据进行函数统计,最后把结果组合成一个比较nice的表格返回。根据数据对

  • Aggregate Query Processing for Semantic Web Databases:

    Aggregate Query Processing for Semantic Web Databases: an Algebraic Approach. ... In this paper, we study the meaning and implementation of grouping and aggregate queries over RDF graphs. We first ...

  • What is aggregate in C#?

    2020-6-16 · The definition of aggregate value in the dictionary is the total value of a number of smaller sums, added together and treated as an individual sum. What is an aggregate query? An aggregate query is a method of deriving group and subgroup data by analysis of a set of individual data entries.

  • Clustering spatial networks for aggregate query processing ...

    In spatial networks, clustering adjacent data to disk pages is highly likely to reduce the number of disk page accesses made by the aggregate network operations during query processing.

  • What is Data Aggregation?

    2022-1-4 · Aggregate data is typically found in a data warehouse, as it can provide answers to analytical questions and also dramatically reduce the time to query large sets of data. Data aggregation is often used to provide statistical analysis for groups of people and to create useful summary data for business analysis .

  • Distributed Processing of Location-Based Aggregate

    The location-based aggregate queries, consisting of the shortest average distance query (SAvgDQ), the shortest minimal distance query (SMinDQ), the shortest maximal distance query (SMaxDQ), and the shortest sum distance query (SSumDQ) are new types of location-based queries. Such queries can be used to provide the user with useful object information by

  • AGGREGATE JOIN INDEX UTILIZATION IN QUERY

    2008-8-5 · 1. A method comprising: obtaining a query; identifying an AJI at a certain level of aggregation; rolling up the dimension table with the grouping key being the union of the grouping key in the AJI and the grouping key of the query; joining the identified AJI with the rolled-up dimension table to obtain columns in the query that are not in the identified AJI; rolling up the

  • Optimizing queries with aggregate views | SpringerLink

    2005-6-10 · Complex queries, with aggregates, views and nested subqueries are important in decision-support applications. Such queries are represented as multi-block queries where a query block may be a view definition containing aggregates or a correlated nested subquery. Beyond transformations that propagate predicates across blocks, the problem of ...

  • processed aggregate definition

    Processing Aggregate In Construction Definition; Construction aggregate Wikipedia. Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates.Aggregates are the most mined

  • R语言-数据整形之aggregate函数 - 银河统计 - 博客园

    2016-5-25 · R语言中aggregate函数 前言 这个函数的功能比较强大,它首先将数据进行分组(按行),然后对每一组数据进行函数统计,最后把结果组合成一个比较nice的表格返回。根据数据对

  • What is Data Aggregation?

    2022-1-4 · Aggregate data is typically found in a data warehouse, as it can provide answers to analytical questions and also dramatically reduce the time to query large sets of data. Data aggregation is often used to provide statistical analysis for groups of people and to create useful summary data for business analysis .

  • Aggregate data faster with approximate query processing ...

    2019-5-22 · Aggregate data faster with approximate query processing. ... The article includes an introduction to the approximate query processing concept, a definition of the available functions and their usage, and a generic test script to evaluate approximate query performance. 1. Introduction to approximate query processing

  • Efficient SUM Query Processing over Uncertain Data

    2021-12-31 · Key words: Probabilistic databases, query processing, aggregate queries. 1 INTRODUCTION Aggregate (or aggr for short) queries, in particular SUM queries, are crucial for many applications that need to deal with probabilistic data [13][17][25]. Let us give two motivating examples from the medical and environmental domains.

  • Distributed Processing of Location-Based Aggregate

    The location-based aggregate queries, consisting of the shortest average distance query (SAvgDQ), the shortest minimal distance query (SMinDQ), the shortest maximal distance query (SMaxDQ), and the shortest sum distance query (SSumDQ) are new types of location-based queries. Such queries can be used to provide the user with useful object information by

  • AGGREGATE JOIN INDEX UTILIZATION IN QUERY

    2008-8-5 · 1. A method comprising: obtaining a query; identifying an AJI at a certain level of aggregation; rolling up the dimension table with the grouping key being the union of the grouping key in the AJI and the grouping key of the query; joining the identified AJI with the rolled-up dimension table to obtain columns in the query that are not in the identified AJI; rolling up the

  • Aggregate nearest neighbor queries in uncertain graphs ...

    2013-2-14 · However, existing ANN query processing approaches cannot handle the situation of uncertain graphs, because topological structures of an uncertain graph may vary in different possible worlds. Motivated by this, we propose the aggregate nearest neighbor query in uncertain graphs (UG-ANN) in this paper. First of all, we give the formal definition ...

  • processed aggregate definition

    Processing Aggregate In Construction Definition; Construction aggregate Wikipedia. Construction aggregate, or simply aggregate, is a broad category of coarse- to medium-grained particulate material used in construction, including sand, gravel, crushed stone, slag, recycled concrete and geosynthetic aggregates.Aggregates are the most mined

  • Aggregate Definition & Meaning - Merriam-Webster

    aggregate: [adjective] formed by the collection of units or particles into a body, mass, or amount : collective: such as. clustered in a dense mass or head. formed from several separate ovaries of a single flower. composed of mineral crystals of one or more kinds or of mineral rock fragments. taking all units as a whole.

  • What Is Log Aggregation: Definition, Tools & Why It's ...

    2019-7-2 · In a nutshell, Sematext Logs is a hassle-free log management and analytics solution that improves efficiency and grants you actionable insights faster. Use the 14-day free trial to explore all its features. Try it out!. Wrap up. Log

  • Aggregate - Wiley Online Library

    Aggregate aims to publish on a wide variety of topics that focus on the processes of aggregation of atoms, ions, molecules, oligomers, polymers, clusters, particles, gels, hybrids, composites, cells, pathogens, etc. in a broad range of areas such