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Sybase Inc
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Sybase Inc patents


Recent patent applications related to Sybase Inc. Sybase Inc is listed as an Agent/Assignee. Note: Sybase Inc may have other listings under different names/spellings. We're not affiliated with Sybase Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Sybase Inc-related inventors


Automatic mode switching in a synchronous replication environment

Disclosed in some examples is a method of database replication, the method including at a Relational Database Management System (RDMS), determining a first replication mode; identifying a triggering event; determining that the triggering event indicates a change in the first replication mode; responsive to determining that the triggering event indicates... Sybase Inc

Splitting of a join operation to allow parallelization

A system and method for processing a database query is described. In response to detection that a database query involves a star or snowflake join operation, a join operator in a preliminary query plan can be split into a build operator and a probe operator. The probe operator can be... Sybase Inc

Topology-aware processor scheduling

In an example embodiment, a method of operating a task scheduler for one or more processors is provided. A topology of one or more processors is obtained, the topology indicating a plurality of execution units and physical resources associated with each of the plurality of execution units. A task to... Sybase Inc

Index updates using parallel and hybrid execution

A method can include receiving a request to execute a database command identifying a target table; identifying a plurality of rows to insert into the target table based in part on the database command; writing rows, from the plurality of rows, into a data page until the data page is... Sybase Inc

System and failover recovery

In some example embodiments, a method comprises: receiving, by a first node of a plurality of nodes in a distributed database system on a shared disk cluster infrastructure, a transaction request to perform a user database transaction a data item in a user database on a shared disk; acquiring, by... Sybase Inc

Database caching in a database system

A database system provides a non-volatile cache memory layer for caching pages for a set of database from the database system. The non-volatile cache memory layer may include a non-volatile cache for caching pages for a database from the set of database on the database system. The non-volatile cache may... Sybase Inc

Generating a native access plan for dynamic entity calling

Disclosed herein are system, method, and computer program product embodiments for generating a native access plan from a query execution plan for dynamic entity calling. An embodiment operates by receiving the query execution plan comprising at least one call to an entity, the entity being implemented by a plurality of... Sybase Inc

Eliminating redundancy when generating intermediate representation code

Disclosed herein are system, method, and computer program product embodiments for eliminating redundancy when generating intermediate representation code. An embodiment operates by traversing a query execution plan, and for at least one operator in the query execution plan, determining whether the operator is derived from a parent class operator. If... Sybase Inc

Generating a native access plan for semi join operators

Disclosed herein are system, method, and computer program product embodiments for generating a native access plan for semi join operators. An embodiment operates by generating a plurality of variables based upon the positions of a plurality of operators in a compiled query plan, opening and traversing tables as the query... Sybase Inc

Non-blocking parallel memory mechanisms

A transaction descriptor associated with a vertical chain of row versions is received. The vertical chain of row versions is traversed. The vertical chain is part of a grid structure formed by a number of vertical chains intersected with a number of horizontal chains. A link to a current row... Sybase Inc

Range searches for database systems

Some embodiments provide a non-transitory machine-readable medium that stores a program. The program receives a query for a set of records in a database system having values in a field of a table that fall within a range of values. The program also determines a number of bits used to... Sybase Inc

Generating a producer-driven execution plan from a consumer-driven iterator-based execution plan

An original query execution plan of a database query is received. The original query execution plan represents a tree of operators. Source code for the original query execution plan is generated by a single traversal of the tree of operators. The generated source code is compiled into native machine code.... Sybase Inc

Native access plan source code generation

Various embodiments of systems and methods to generate native access plan source code are described herein. In one aspect, a database query is received. A query execution plan, including a parent operator and one or more descendent operators, corresponding to the database query is retrieved. Further, a check is made... Sybase Inc

Accelerating database queries using equivalence union enumeration

A database query may include an operator requesting two or more incoming tuple streams be combined into a result tuple stream. Generating a query execution plan may include constructing an equivalence union enumeration lookup table for a result domain of an element within the result tuple stream by taking a... Sybase Inc

Accelerating database queries using composite union enumeration

A method may include accepting a database query including an operator requesting two or more incoming tuple streams be combined into a result tuple stream. At least one data value in the incoming tuple streams may be represented by an enumeration value. The method may include generating a query execution... Sybase Inc

Rollover strategies in a n-bit dictionary compressed column store

Disclosed herein are system, method, and computer program product embodiments for rollover strategies in an n-bit dictionary compressed column store. An embodiment operates by receiving a new value for addition to a compressed column store. It is determined that a maximum storage capacity for tokens in the compressed column store... Sybase Inc

Accelerating database queries using enhanced partition elimination

Increasing the efficiency of performing queries on databases by eliminating partitions during a database query. The database query configured to access a database table having one or more columns and one or more rows, the database query including a condition on a specified basis column. The database table being partitioned... Sybase Inc

Topology-aware processor scheduling

In an example embodiment, a method of operating a task scheduler for one or more processors is provided. A topology of one or more processors is obtained, the topology indicating a plurality of execution units and physical resources associated with each of the plurality of execution units. A task to... Sybase Inc

Database logging using storage class memory

A plurality of reserve and commit log operations are initiated in a database system. Thereafter, at least a portion of the database operations are logged in a log such that transient data structures are kept in-memory of the database system and persistent data structures are kept in byte-addressable memory. Next,... Sybase Inc








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