Dynamic smt in parallel database systems
A data management system receives a query. A query optimizer determines an access plan for the query. The access plan has a plurality of stages, where each stage may have a different degree of...
View ArticleMethods, systems, and computer-readable media for providing a query layer for...
Computer-implemented methods, systems and computer-readable media for providing a query layer for cloud databases comprise importing data into said cloud by at least one of the computing devices,...
View ArticleDisappearing index for more efficient processing of a database query
A disappearing index allows faster processing of a database query without the startup time of a prior art sparse index. The disappearing index starts as a full index but is trimmed of index values...
View ArticleDatabase query optimizer that takes network choice into consideration
In a networked computer system that includes multiple nodes and multiple networks interconnecting the nodes, a database query optimizer takes network choice into consideration when optimizing a query....
View ArticleAutonomic refresh of a materialized query table in a computer database
A method autonomically refreshes a materialized query table (MQT) in a computer database to improve database performance and utility. In preferred embodiments, the query optimizer autonomically...
View ArticleString searches in a computer database
A query optimizer improves string searches in a computer database that sequentially search for a string in a database record. The query optimizer optimizes the query to search records of a database...
View ArticleString searches in a computer database
A query optimizer improves string searches in a computer database that sequentially search for a string in a database record. The query optimizer optimizes the query to search records of a database...
View ArticleQuery execution and optimization with autonomic error recovery from network...
A database query execution monitor determines if an network error or low performance condition exists and then where possible modifies the query. The query execution monitor then determines an...
View ArticleQuery execution and optimization with autonomic error recovery from network...
A database query execution monitor determines if a network error or low performance condition exists and then where possible modifies the query. The query execution monitor then determines an...
View ArticleApparatus and method for scheduling user defined operator (udo) in data...
An apparatus and a method of optimizing queries through scheduling User Defined Operators (UDOs) in a Data Stream Management System (DSMS), are provided. The apparatus includes a query optimizer...
View ArticleQuery optimization in a parallel computer system with multiple networks
A database query optimizer optimizes a query that uses multiple networks. The database query optimizer optimizes a query that uses multiple networks to satisfy the query by splitting the query...
View ArticleQuery optimization in a parallel computer system with multiple networks
A database query optimizer optimizes a query that uses multiple networks. The database query optimizer optimizes a query that uses multiple networks to satisfy the query by splitting the query...
View ArticleQuery optimization in a parallel computer system to reduce network traffic
A database query optimizer optimizes a query that uses multiple networks. The query optimizer optimizes a query to reduce network traffic on a network or node that is overloaded or above an...
View ArticleQuery optimization in a parallel computer system to reduce network traffic
A database query optimizer optimizes a query that uses multiple networks. The query optimizer optimizes a query to reduce network traffic on a network or node that is overloaded or above an...
View ArticleParallelizing query optimization
A system, computer-implemented method, and computer-program product embodiments for generating an access plan. A query optimizer includes an enumeration method which enumerates a plurality of subsets...
View ArticlePredicting query execution time
There are provided a system and method for predicting query execution time in a database system. A cost model determination device determines a cost model of a database query optimizer for the...
View ArticleSystem and method for optimizing pattern query searches on a graph database
An embodiment of the system and method for optimizing pattern query searches on a graph database uses a pattern query optimizer to optimize execution of the search plan for any sequence of SQL...
View ArticleSystem and methods of improving a multi-tenant database query using...
In embodiments, methods and systems for improving a query in a database system are provided. These method and system embodiments can enable greater contextual knowledge about the types and use of data...
View ArticleEnergy-efficient query optimization
A query optimizer may determine the time sensitivity of a database query using the query semantics information. The query optimizer may determine a query execution plan based on the time sensitivity...
View ArticleRule-based extendable query optimizer
A query is received which causes an initial data flow graph that includes a plurality of nodes that are used to execute the query is generated. Thereafter, the initial data flow graph is optimized...
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