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VLD Digital
(23 results)-
Whitepapers
The Vertica Analytic Database: C-Store 7 Years Later
August 21, 2012, 12:00am PDT
This paper describes the system architecture of the Vertica Analytic Database (Vertica), a commercialization of the design of the C-Store research prototype. Vertica demonstrates a modern...
Provided by VLD Digital
-
Whitepapers
A Storage Advisor for Hybrid-Store Databases
August 21, 2012, 12:00am PDT
With the SAP HANA database, SAP offers a high-performance in-memory hybrid-store database. Hybrid-store databases - that is, databases supporting row- and column-oriented data management - are...
Provided by VLD Digital
-
Whitepapers
Mining Frequent Itemsets Over Uncertain Databases
August 1, 2012, 12:00am PDT
In recent years, due to the wide applications of uncertain data, mining frequent itemsets over uncertain databases has attracted much attention. In uncertain databases, the support of an itemset...
Provided by VLD Digital
-
Whitepapers
ALAE: Accelerating Local Alignment with Affine Gap Exactly in Biosequence Databases
August 1, 2012, 12:00am PDT
The authors explain the problem of local alignment, which is finding pairs of similar subsequences with gaps. The problem exists in biosequence databases. BLAST is a typical software for finding...
Provided by VLD Digital
-
Whitepapers
Automatic Partitioning of Database Applications
August 1, 2012, 12:00am PDT
Database-backed applications are nearly ubiquitous in user's daily lives. Applications that make many small accesses to the database create two challenges for developers: increased latency and...
Provided by VLD Digital
-
Whitepapers
Compacting Transactional Data in Hybrid OLTP & OLAP Databases
August 1, 2012, 12:00am PDT
Growing main memory sizes have facilitated database management systems that keep the entire database in main memory. The drastic performance improvements that came along with these in-memory...
Provided by VLD Digital
-
Whitepapers
Probabilistic Databases with MarkoViews
August 1, 2012, 12:00am PDT
Most of the work on query evaluation in probabilistic databases has focused on the simple tuple-independent data model, where tuples are independent random events. Several efficient query...
Provided by VLD Digital
-
Whitepapers
Optimal Algorithms for Crawling a Hidden Database in the Web
August 1, 2012, 12:00am PDT
A hidden database refers to a dataset that an organization makes accessible on the web by allowing users to issue queries through a search interface. In other words, data acquisition from such a...
Provided by VLD Digital
-
Whitepapers
Massively Parallel Sort-Merge Joins in Main Memory Multi-Core Database Systems
June 30, 2012, 12:00am PDT
Two emerging hardware trends will dominate the database system technology in the near future: increasing main memory capacities of several TB per server and massively parallel multi-core...
Provided by VLD Digital
-
Whitepapers
LogBase: A Scalable Log-Structured Database System in the Cloud
June 30, 2012, 12:00am PDT
Numerous applications such as financial transactions (e.g., stock trading) are write-heavy in nature. The shift from reads to writes in web applications has also been accelerating in recent years....
Provided by VLD Digital
-
Whitepapers
Efficient Subgraph Similarity Search on Large Probabilistic Graph Databases
May 30, 2012, 12:00am PDT
Many studies have been conducted on seeking the efficient solution for subgraph similarity search over certain (deterministic) graphs due to its wide application in many fields, including...
Provided by VLD Digital
-
Whitepapers
Definition, Detection, and Recovery of Single-Page Failures, a Fourth Class of Database Failures
March 29, 2012, 12:00am PDT
The three traditional failure classes are system, media, and transaction failures. Sometimes, however, modern storage exhibits failures that differ from all of those. In order to capture and...
Provided by VLD Digital
-
Whitepapers
Pushing the Boundaries of Crowd-Enabled Databases with Query-Driven Schema Expansion
March 1, 2012, 12:00am PST
By incorporating human workers into the query execution process crowd-enabled databases facilitate intelligent, social capabilities like completing missing data at query time or performing...
Provided by VLD Digital
-
Whitepapers
Stochastic Database Cracking: Towards Robust Adaptive Indexing in Main-Memory Column-Stores
March 1, 2012, 12:00am PST
Modern business applications and scientific databases call for inherently dynamic data storage environments. Such environments are characterized by two challenging features: they have little idle...
Provided by VLD Digital
-
Whitepapers
Aggregation in Probabilistic Databases Via Knowledge Compilation
January 31, 2012, 12:00am PST
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic structures of...
Provided by VLD Digital
-
Whitepapers
Putting Lipstick on Pig: Enabling Database-Style Workflow Provenance
December 31, 2011, 12:00am PST
Workflow provenance typically assumes that each module is a "Black-box", so that each output depends on all inputs (coarse-grained dependencies). Furthermore, it does not model the internal state...
Provided by VLD Digital
-
Whitepapers
High-Performance Concurrency Control Mechanisms for Main-Memory Databases
December 31, 2011, 12:00am PST
A database system optimized for in-memory storage can support much higher transaction rates than current systems. However, standard concurrency control methods used today do not scale to the high...
Provided by VLD Digital
-
Whitepapers
View Selection in Semantic Web Databases
October 30, 2011, 12:00am PDT
The authors consider the setting of a Semantic Web database, containing both explicit data encoded in RDF triples, and implicit data, implied by the RDF semantics. Based on a query workload, they...
Provided by VLD Digital
-
Whitepapers
Fast Updates on Read-Optimized Databases Using Multi-Core CPUs
September 30, 2011, 12:00am PDT
Read-optimized columnar databases use differential updates to handle writes by maintaining a separate write-optimized delta partition which is periodically merged with the read-optimized and...
Provided by VLD Digital
-
Whitepapers
Distributed GraphLab: A Framework for Machine Learning in the Cloud
April 26, 2012, 12:00am PDT
While high-level data parallel frameworks, like MapReduce, simplify the design and implementation of large-scale data processing systems, they do not naturally or efficiently support many...
Provided by VLD Digital
-
Whitepapers
How to Price Shared Optimizations in the Cloud
March 1, 2012, 12:00am PST
Data-management-as-a-service systems are increasingly being used in collaborative settings, where multiple users access common datasets. Cloud providers have the choice to implement various...
Provided by VLD Digital
-
Whitepapers
On Predictive Modeling for Optimizing Transaction Execution in Parallel OLTP Systems
August 31, 2012, 12:00am PDT
A new emerging class of parallel DataBase Management Systems (DBMS) is designed to take advantage of the partitionable workloads of On-Line Transaction Processing (OLTP) applications. Transactions...
Provided by VLD Digital
-
Whitepapers
A-Tree: A Structure for Storage and Modeling of Uncertain Multidimensional Arrays
July 11, 2010, 12:00am PDT
Multidimensional array database systems are suited for scientific and engineering applications. Data in these applications is often uncertain and imprecise due to errors in the instruments and...
Provided by VLD Digital
-
Whitepapers
A-Tree: A Structure for Storage and Modeling of Uncertain Multidimensional Arrays
July 11, 2010, 12:00am PDT
Multidimensional array database systems are suited for scientific and engineering applications. Data in these applications is often uncertain and imprecise due to errors in the instruments and...
Provided by VLD Digital
-
Whitepapers
On Predictive Modeling for Optimizing Transaction Execution in Parallel OLTP Systems
August 31, 2012, 12:00am PDT
A new emerging class of parallel DataBase Management Systems (DBMS) is designed to take advantage of the partitionable workloads of On-Line Transaction Processing (OLTP) applications. Transactions...
Provided by VLD Digital
-
Whitepapers
How to Price Shared Optimizations in the Cloud
March 1, 2012, 12:00am PST
Data-management-as-a-service systems are increasingly being used in collaborative settings, where multiple users access common datasets. Cloud providers have the choice to implement various...
Provided by VLD Digital
-
Whitepapers
Distributed GraphLab: A Framework for Machine Learning in the Cloud
April 26, 2012, 12:00am PDT
While high-level data parallel frameworks, like MapReduce, simplify the design and implementation of large-scale data processing systems, they do not naturally or efficiently support many...
Provided by VLD Digital
-
Whitepapers
Fast Updates on Read-Optimized Databases Using Multi-Core CPUs
September 30, 2011, 12:00am PDT
Read-optimized columnar databases use differential updates to handle writes by maintaining a separate write-optimized delta partition which is periodically merged with the read-optimized and...
Provided by VLD Digital
-
Whitepapers
View Selection in Semantic Web Databases
October 30, 2011, 12:00am PDT
The authors consider the setting of a Semantic Web database, containing both explicit data encoded in RDF triples, and implicit data, implied by the RDF semantics. Based on a query workload, they...
Provided by VLD Digital
-
Whitepapers
High-Performance Concurrency Control Mechanisms for Main-Memory Databases
December 31, 2011, 12:00am PST
A database system optimized for in-memory storage can support much higher transaction rates than current systems. However, standard concurrency control methods used today do not scale to the high...
Provided by VLD Digital
-
Whitepapers
Putting Lipstick on Pig: Enabling Database-Style Workflow Provenance
December 31, 2011, 12:00am PST
Workflow provenance typically assumes that each module is a "Black-box", so that each output depends on all inputs (coarse-grained dependencies). Furthermore, it does not model the internal state...
Provided by VLD Digital
-
Whitepapers
Aggregation in Probabilistic Databases Via Knowledge Compilation
January 31, 2012, 12:00am PST
This paper presents a query evaluation technique for positive relational algebra queries with aggregates on a representation system for probabilistic data based on the algebraic structures of...
Provided by VLD Digital
-
Whitepapers
Stochastic Database Cracking: Towards Robust Adaptive Indexing in Main-Memory Column-Stores
March 1, 2012, 12:00am PST
Modern business applications and scientific databases call for inherently dynamic data storage environments. Such environments are characterized by two challenging features: they have little idle...
Provided by VLD Digital
-
Whitepapers
Pushing the Boundaries of Crowd-Enabled Databases with Query-Driven Schema Expansion
March 1, 2012, 12:00am PST
By incorporating human workers into the query execution process crowd-enabled databases facilitate intelligent, social capabilities like completing missing data at query time or performing...
Provided by VLD Digital
-
Whitepapers
Definition, Detection, and Recovery of Single-Page Failures, a Fourth Class of Database Failures
March 29, 2012, 12:00am PDT
The three traditional failure classes are system, media, and transaction failures. Sometimes, however, modern storage exhibits failures that differ from all of those. In order to capture and...
Provided by VLD Digital
-
Whitepapers
Efficient Subgraph Similarity Search on Large Probabilistic Graph Databases
May 30, 2012, 12:00am PDT
Many studies have been conducted on seeking the efficient solution for subgraph similarity search over certain (deterministic) graphs due to its wide application in many fields, including...
Provided by VLD Digital
-
Whitepapers
LogBase: A Scalable Log-Structured Database System in the Cloud
June 30, 2012, 12:00am PDT
Numerous applications such as financial transactions (e.g., stock trading) are write-heavy in nature. The shift from reads to writes in web applications has also been accelerating in recent years....
Provided by VLD Digital
-
Whitepapers
Massively Parallel Sort-Merge Joins in Main Memory Multi-Core Database Systems
June 30, 2012, 12:00am PDT
Two emerging hardware trends will dominate the database system technology in the near future: increasing main memory capacities of several TB per server and massively parallel multi-core...
Provided by VLD Digital
-
Whitepapers
Optimal Algorithms for Crawling a Hidden Database in the Web
August 1, 2012, 12:00am PDT
A hidden database refers to a dataset that an organization makes accessible on the web by allowing users to issue queries through a search interface. In other words, data acquisition from such a...
Provided by VLD Digital
-
Whitepapers
Probabilistic Databases with MarkoViews
August 1, 2012, 12:00am PDT
Most of the work on query evaluation in probabilistic databases has focused on the simple tuple-independent data model, where tuples are independent random events. Several efficient query...
Provided by VLD Digital
-
Whitepapers
Compacting Transactional Data in Hybrid OLTP & OLAP Databases
August 1, 2012, 12:00am PDT
Growing main memory sizes have facilitated database management systems that keep the entire database in main memory. The drastic performance improvements that came along with these in-memory...
Provided by VLD Digital
-
Whitepapers
Automatic Partitioning of Database Applications
August 1, 2012, 12:00am PDT
Database-backed applications are nearly ubiquitous in user's daily lives. Applications that make many small accesses to the database create two challenges for developers: increased latency and...
Provided by VLD Digital
-
Whitepapers
ALAE: Accelerating Local Alignment with Affine Gap Exactly in Biosequence Databases
August 1, 2012, 12:00am PDT
The authors explain the problem of local alignment, which is finding pairs of similar subsequences with gaps. The problem exists in biosequence databases. BLAST is a typical software for finding...
Provided by VLD Digital
-
Whitepapers
Mining Frequent Itemsets Over Uncertain Databases
August 1, 2012, 12:00am PDT
In recent years, due to the wide applications of uncertain data, mining frequent itemsets over uncertain databases has attracted much attention. In uncertain databases, the support of an itemset...
Provided by VLD Digital
-
Whitepapers
A Storage Advisor for Hybrid-Store Databases
August 21, 2012, 12:00am PDT
With the SAP HANA database, SAP offers a high-performance in-memory hybrid-store database. Hybrid-store databases - that is, databases supporting row- and column-oriented data management - are...
Provided by VLD Digital
-
Whitepapers
The Vertica Analytic Database: C-Store 7 Years Later
August 21, 2012, 12:00am PDT
This paper describes the system architecture of the Vertica Analytic Database (Vertica), a commercialization of the design of the C-Store research prototype. Vertica demonstrates a modern...
Provided by VLD Digital
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