Volcano/spl minus/an extensible and parallel query evaluation
... how query processing is really done in commercial database products. For example, using temporary files to transfer data from one operation to the next as suggested in most textbooks has a substantial performance penalty, and is therefore used in neither real database systems nor in Volcano. Finally ...
... how query processing is really done in commercial database products. For example, using temporary files to transfer data from one operation to the next as suggested in most textbooks has a substantial performance penalty, and is therefore used in neither real database systems nor in Volcano. Finally ...
Chapter 21:Application Development and Administration
... Query Processing and Optimization Overview of Optimization Process Query-compilation process consists of four steps ...
... Query Processing and Optimization Overview of Optimization Process Query-compilation process consists of four steps ...
Keyword Search over Relational Databases: A Metadata Approach
... network of interconnected tuples, they detect those containing the keywords in the query, they generate connected components based on how these tuples are associated, and they return these connected tuples as an answer to the query. To do so, specialized structures that index the database content [2 ...
... network of interconnected tuples, they detect those containing the keywords in the query, they generate connected components based on how these tuples are associated, and they return these connected tuples as an answer to the query. To do so, specialized structures that index the database content [2 ...
Getting to know the ins and outs of Oracle Partitioning in Oracle
... • “Standard” Partitioning with deferred segment creation – Only explicitly defined partitions are existent • New partitions have to be added via DDL – No segments are allocated for partitions without data • New record insertion triggers segment creation when data matches pre-defined partitions – Ide ...
... • “Standard” Partitioning with deferred segment creation – Only explicitly defined partitions are existent • New partitions have to be added via DDL – No segments are allocated for partitions without data • New record insertion triggers segment creation when data matches pre-defined partitions – Ide ...
MS_SQL_Server
... Query Processing and Optimization Overview of Optimization Process Query-compilation process consists of four steps ...
... Query Processing and Optimization Overview of Optimization Process Query-compilation process consists of four steps ...
Oracle Database. In-Memory Aggregation
... Without the need to support objects such as indexes and summary tables, IMA can provide fast and consistent query performance across more dimension tables (more joins) and more attributes (more grouping columns), and across dimension and fact tables that are being updated in real-time. As compared t ...
... Without the need to support objects such as indexes and summary tables, IMA can provide fast and consistent query performance across more dimension tables (more joins) and more attributes (more grouping columns), and across dimension and fact tables that are being updated in real-time. As compared t ...
The Design of an Interactive Computer Assisted System To
... As long as I can remember, what machines can do for humans and especially what computers can do to simplify the life of mankind always has fascinated me. However, thinking back about the first computers which have been built and even thinking about the machines that followed up to the late eighties, ...
... As long as I can remember, what machines can do for humans and especially what computers can do to simplify the life of mankind always has fascinated me. However, thinking back about the first computers which have been built and even thinking about the machines that followed up to the late eighties, ...
Connection Management Strategies for Java applications
... does not exhaust system resources. The recommendation is to set it to a value based on the number of connections expected from the application and tune it as required. The value can also be set as suggested by the following formula. MaxPoolSize = (rdbms-cores * n) / sum (pools-per-mid-tier) where n ...
... does not exhaust system resources. The recommendation is to set it to a value based on the number of connections expected from the application and tune it as required. The value can also be set as suggested by the following formula. MaxPoolSize = (rdbms-cores * n) / sum (pools-per-mid-tier) where n ...
Integrating with Fortis - Triangle Solutions Technology
... the entire Folder hierarchy displays in the Document Explorer, PowerWeb lets you hide all other databases, Folders, Query Sets, etc., except those pertaining to a specific user. The thin client access is also much faster than a traditional LAN/WAN client access. Creating a custom interface that is u ...
... the entire Folder hierarchy displays in the Document Explorer, PowerWeb lets you hide all other databases, Folders, Query Sets, etc., except those pertaining to a specific user. The thin client access is also much faster than a traditional LAN/WAN client access. Creating a custom interface that is u ...
The State of the Art in Distributed Query Processing
... distributed system changes rapidly because the load of sites varies over time and new sites are added to the system; (3) legacy systems need to be integrated—such legacy systems usually have not been designed for distributed data processing and now need to interact with other (modern) systems in a d ...
... distributed system changes rapidly because the load of sites varies over time and new sites are added to the system; (3) legacy systems need to be integrated—such legacy systems usually have not been designed for distributed data processing and now need to interact with other (modern) systems in a d ...
2 FieldWorks database model
... ISilDataAccess, IVwOleDbDa, and IVwCacheDa COM interfaces that allow access in a more object-oriented way than pure SQL queries. See http://fieldworks.sil.org/objectweb for details on these interfaces. FieldWorks Data Objects (FDO). This is a .NET assembly of classes you can use to access and ma ...
... ISilDataAccess, IVwOleDbDa, and IVwCacheDa COM interfaces that allow access in a more object-oriented way than pure SQL queries. See http://fieldworks.sil.org/objectweb for details on these interfaces. FieldWorks Data Objects (FDO). This is a .NET assembly of classes you can use to access and ma ...
Databases - JB on programming
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... 1.1.10 See also . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Watermarking Techniques for Relational Databases
... libraries, e-commerce, online decision support system etc. These applications make the digital assets, such as digital images, video, audio, database content etc, easily accessible by ordinary people around the world for sharing, purchasing, distributing, or many other purposes. As a result of this, ...
... libraries, e-commerce, online decision support system etc. These applications make the digital assets, such as digital images, video, audio, database content etc, easily accessible by ordinary people around the world for sharing, purchasing, distributing, or many other purposes. As a result of this, ...
Pdf
... However, recent studies show that a significant part of the leaked records have been done so by using specialized malwares that can access the main memory of systems. These malwares can easily capture the sensitive information that are decrypted in the memory including the cryptographic keys used to ...
... However, recent studies show that a significant part of the leaked records have been done so by using specialized malwares that can access the main memory of systems. These malwares can easily capture the sensitive information that are decrypted in the memory including the cryptographic keys used to ...
ORACLE DATA WAREHOUSE ON EMC SYMMETRIX VMAX 40K
... query and analysis rather than for transaction processing. It usually contains historical data derived from transaction data, and it can include and consolidate data from other sources. An enterprise can use a data warehouse to monitor and report on operations and to deploy analytical tools for fore ...
... query and analysis rather than for transaction processing. It usually contains historical data derived from transaction data, and it can include and consolidate data from other sources. An enterprise can use a data warehouse to monitor and report on operations and to deploy analytical tools for fore ...
Feeding the Active Data Warehouse
... The combination of a very low Priority Scheduler relative weight combined with a constrictive CPU limit is likely to be effective in keeping most sandbox applications from interfering with production work. However, a third workload management option is available if the number of sandbox queries bein ...
... The combination of a very low Priority Scheduler relative weight combined with a constrictive CPU limit is likely to be effective in keeping most sandbox applications from interfering with production work. However, a third workload management option is available if the number of sandbox queries bein ...
dmsunit5ppt - SNGCE DIGITAL LIBRARY
... To ensure atomicity ,the DBMS undo the effects of the transactions which is executed partially. To do this DBMS maintains a record called the log of all writes to the database The log is also used to ensure durability. if the system crashes before the changes made by a completed transaction are writ ...
... To ensure atomicity ,the DBMS undo the effects of the transactions which is executed partially. To do this DBMS maintains a record called the log of all writes to the database The log is also used to ensure durability. if the system crashes before the changes made by a completed transaction are writ ...
Valid Time Database Implementation Using Oracle11g Workspace
... facts which are currently true and satisfy the search conditions. In principle, current queries (and other current operations) on temporal database system should be compatible with conventional databases. Current queries are therefore almost identical to normal SQL queries except the references to v ...
... facts which are currently true and satisfy the search conditions. In principle, current queries (and other current operations) on temporal database system should be compatible with conventional databases. Current queries are therefore almost identical to normal SQL queries except the references to v ...
Presentation - Oracle Software Downloads
... • Captures and manages events • Shares events with other databases and applications • Routes published information to subscribed destinations • Integrated with new job scheduler ...
... • Captures and manages events • Shares events with other databases and applications • Routes published information to subscribed destinations • Integrated with new job scheduler ...
Using SAP MaxDB Database Manager
... instance. You can use the query tools to create, execute and manage any number of SQL statements. SQL Studio provides a user friendly graphical interface for Microsoft Windows operating systems. The SQLCLI is a command line oriented tool which can be used on UNIX/Linux and Windows systems. The Datab ...
... instance. You can use the query tools to create, execute and manage any number of SQL statements. SQL Studio provides a user friendly graphical interface for Microsoft Windows operating systems. The SQLCLI is a command line oriented tool which can be used on UNIX/Linux and Windows systems. The Datab ...
PPT - United Nations Statistics Division
... The type of analysis you plan to do depends on the type of attributes you are working with. ...
... The type of analysis you plan to do depends on the type of attributes you are working with. ...
Liu07 - ETIS publications
... cost of operators appearing in the plan. Generally, cost information such as source statistics is necessary for these cost models, because these statistics are used to derive the value of coefficients in cost formulas. It is often DBMS implementers who are able to give accurate cost formulas with in ...
... cost of operators appearing in the plan. Generally, cost information such as source statistics is necessary for these cost models, because these statistics are used to derive the value of coefficients in cost formulas. It is often DBMS implementers who are able to give accurate cost formulas with in ...