Asgari-Mamegahni-CISSE2007-6_page_cisse2007paper
... in local minimums. The results of experiments show that hybrid algorithm has dominance over the methods of genetic algorithm and learning automata. The paper has been organized as follows: The second part defines join ordering problem in database queries. Part three provides brief account of learnin ...
... in local minimums. The results of experiments show that hybrid algorithm has dominance over the methods of genetic algorithm and learning automata. The paper has been organized as follows: The second part defines join ordering problem in database queries. Part three provides brief account of learnin ...
PowerPointova predstavitev
... • Database-level permission model in SQL Azure is same as on-premise SQL Server • Logins associated to users in databases • Users may be part of one or more database roles • Permissions granted to roles or directly to users ...
... • Database-level permission model in SQL Azure is same as on-premise SQL Server • Logins associated to users in databases • Users may be part of one or more database roles • Permissions granted to roles or directly to users ...
Server performance with full disk encryption: The Dell
... DVD Store To build the workload, we used DVD Store Version 2.1 (DS2), an open-source simulation of an online ecommerce DVD store. DS2 has database components and Web server components, and includes driver programs that place heavy loads on these components. A new feature of DVD Store Version 2.1 use ...
... DVD Store To build the workload, we used DVD Store Version 2.1 (DS2), an open-source simulation of an online ecommerce DVD store. DS2 has database components and Web server components, and includes driver programs that place heavy loads on these components. A new feature of DVD Store Version 2.1 use ...
The skyline operator - Data Engineering, 2001. Proceedings. 17th
... Just like join and most other logical operators, there are several different (physical) ways to implement the Skyline, operator. In this section, we will describe seven variants: three variants based on a block-nested-loops algorithm; three variants based on divide-and-conquer; and one special varia ...
... Just like join and most other logical operators, there are several different (physical) ways to implement the Skyline, operator. In this section, we will describe seven variants: three variants based on a block-nested-loops algorithm; three variants based on divide-and-conquer; and one special varia ...
Word - 1913 KB - Department of the Environment
... information to aid the interpretation of the CFEV assessment data. Until recently, only the output data which represented the results of the CFEV assessment was stored in the database (e.g. features within the rivers spatial layer attributed with CFEV assessment data). A recent upgrade of the struct ...
... information to aid the interpretation of the CFEV assessment data. Until recently, only the output data which represented the results of the CFEV assessment was stored in the database (e.g. features within the rivers spatial layer attributed with CFEV assessment data). A recent upgrade of the struct ...
dbTouch: Analytics at your Fingertips
... No expert knowledge is needed. Data is represented in a visual format, e.g., a column shape for an attribute or a fat rectangle shape for a table, while users can touch those shapes and interact/query with gestures as opposed to firing complex SQL queries. The system does not try to consume all data ...
... No expert knowledge is needed. Data is represented in a visual format, e.g., a column shape for an attribute or a fat rectangle shape for a table, while users can touch those shapes and interact/query with gestures as opposed to firing complex SQL queries. The system does not try to consume all data ...
XML Schema
... queried in the absence of any formal description of its structure. Many applications need to be able to make assumptions about the structure of documents they process. XML Schema provides a wide range of modelling facilities for defining XML documents. ...
... queried in the absence of any formal description of its structure. Many applications need to be able to make assumptions about the structure of documents they process. XML Schema provides a wide range of modelling facilities for defining XML documents. ...
Introducing the ASP.NET 2.0 GridView and DetailsView - Dei-Isep
... The ASP.NET 2.0 framework includes several DataSource controls that are designed to work with different data sources. The page in Listing 1 contains a SqlDataSource control. The SqlDataSource control represents records from any SQL database, including Microsoft SQL Server and Oracle databases. The A ...
... The ASP.NET 2.0 framework includes several DataSource controls that are designed to work with different data sources. The page in Listing 1 contains a SqlDataSource control. The SqlDataSource control represents records from any SQL database, including Microsoft SQL Server and Oracle databases. The A ...
(New Updated) Studying The Latest Version
... RANK ( ) OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode B. SELECT Id, Name, Marks, DENSE_RANK () OVER (ORDER BY Marks DESC) AS Rank FROM StudentMarks C. SELECT StudentCode as Code, DENSE_RANK () OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY St ...
... RANK ( ) OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY StudentCode B. SELECT Id, Name, Marks, DENSE_RANK () OVER (ORDER BY Marks DESC) AS Rank FROM StudentMarks C. SELECT StudentCode as Code, DENSE_RANK () OVER (ORDER BY AVG (Marks) DESC) AS Value FROM StudentMarks GROUP BY St ...
PPT - Ajay Ardeshana
... If failures occur between writing to the buffers and flushing of buffers to the secondary storage, the recovery manager must determine the status of the transaction that performed the WRITE and the time of failure. If the transaction had already issued COMMIT, the recovery manager perform redo, ...
... If failures occur between writing to the buffers and flushing of buffers to the secondary storage, the recovery manager must determine the status of the transaction that performed the WRITE and the time of failure. If the transaction had already issued COMMIT, the recovery manager perform redo, ...
WebSphere Application Server V7: Accessing Databases from WebSphere WebSphere Application
... 2. Ensure that the database has been created and can be accessed by the systems that will use it. 3. Ensure that the JDBC provider classes are available on the systems that will access the database. If you are not sure which classes are required, consult the documentation for the provider. 4. Create ...
... 2. Ensure that the database has been created and can be accessed by the systems that will use it. 3. Ensure that the JDBC provider classes are available on the systems that will access the database. If you are not sure which classes are required, consult the documentation for the provider. 4. Create ...
Enterprise PDM - Backup and Restore
... A database in Full recovery mode allows you to do "point-in-time recovery." This model requires the most administration because all operations are logged and the transaction log is not truncated until a transaction log backup is performed. Be careful not to run out the disk space. Databases are usua ...
... A database in Full recovery mode allows you to do "point-in-time recovery." This model requires the most administration because all operations are logged and the transaction log is not truncated until a transaction log backup is performed. Be careful not to run out the disk space. Databases are usua ...
Areas The reader should by now have a good feel for why OSPF
... The reader should by now have a good feel for why OSPF, with its multiple databases and complex algorithms, can put greater demands on the memory and processors of a router than the previously examined protocols can. As an internet work grows, these demands can become significant or even crippling. ...
... The reader should by now have a good feel for why OSPF, with its multiple databases and complex algorithms, can put greater demands on the memory and processors of a router than the previously examined protocols can. As an internet work grows, these demands can become significant or even crippling. ...
In this module you will learn how to use the... • Capture a workload on the production database
... You can drill down to see the details of each aggregated statement. We will do that later. Let’s close this tab and look at replay performance in the Response Time tab. This view displays the captured metrics that you can use to compare the performance of the two workloads. The Cumulative Statement ...
... You can drill down to see the details of each aggregated statement. We will do that later. Let’s close this tab and look at replay performance in the Response Time tab. This view displays the captured metrics that you can use to compare the performance of the two workloads. The Cumulative Statement ...
Constructing an Interactive Natural Language Interface
... Keyword search systems are popular and effective in at least some domains, such as for document search. As we think about the architecture of an NLIDB, it is worthwhile to draw inspiration from search engines, and how they infer user intent from limited information. First, given a query, a search en ...
... Keyword search systems are popular and effective in at least some domains, such as for document search. As we think about the architecture of an NLIDB, it is worthwhile to draw inspiration from search engines, and how they infer user intent from limited information. First, given a query, a search en ...
DKE 2008 - Drexel University
... In addition to the burstness of noun phrases extracted from titles and abstracts of DKE papers, the burstness of keywords assigned to DKE papers is also taken into account in our study. In general, keywords identify thematic topics at a higher conceptual level than noun phrases. For example, noun ph ...
... In addition to the burstness of noun phrases extracted from titles and abstracts of DKE papers, the burstness of keywords assigned to DKE papers is also taken into account in our study. In general, keywords identify thematic topics at a higher conceptual level than noun phrases. For example, noun ph ...
Orator Documentation
... Note that two keys have been added to the configuration dictionary: read and write. Both of these keys have dictionary values containing a single key: host. The rest of the database options for the read and write connections will be merged from the main mysql dictionary. So, you only need to place i ...
... Note that two keys have been added to the configuration dictionary: read and write. Both of these keys have dictionary values containing a single key: host. The rest of the database options for the read and write connections will be merged from the main mysql dictionary. So, you only need to place i ...
Constructing an Interactive Natural Language Interface for
... Keyword search systems are popular and e↵ective in at least some domains, such as for document search. As we think about the architecture of an NLIDB, it is worthwhile to draw inspiration from search engines, and how they infer user intent from limited information. First, given a query, a search eng ...
... Keyword search systems are popular and e↵ective in at least some domains, such as for document search. As we think about the architecture of an NLIDB, it is worthwhile to draw inspiration from search engines, and how they infer user intent from limited information. First, given a query, a search eng ...
SQL Server 2008 Consolidation
... Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, ...
... Complying with all applicable copyright laws is the responsibility of the user. Without limiting the rights under copyright, no part of this document may be reproduced, stored in, or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, ...
Database Engines on Multicores, Why Parallelize When You Can
... In the case of relational database engines, and in spite of the intense research in the area, there are still few practical solutions that allow a more flexible deployment of databases over multicore machines. We argue that this is the result of the radical architectural changes that many current pr ...
... In the case of relational database engines, and in spite of the intense research in the area, there are still few practical solutions that allow a more flexible deployment of databases over multicore machines. We argue that this is the result of the radical architectural changes that many current pr ...
The Process of Tuning DB2 for AIX
... in 2005. LL Bean’s Internet interface requires use of multiple technology layers. Keeping these applications performing optimally is an intense challenge because of the scope and technological diversity of the application. Understanding the DB2 UDB architecture and all its implications is quite chal ...
... in 2005. LL Bean’s Internet interface requires use of multiple technology layers. Keeping these applications performing optimally is an intense challenge because of the scope and technological diversity of the application. Understanding the DB2 UDB architecture and all its implications is quite chal ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.