A Methodology for Database System Performance Evaluation
... of shared data pages. Thus to achieve optimal performance a database system may have to use different algorithms depending on whether or not a data page is being shared. We are currently investigating this issue. To explore the effects of data sharing on system performance, we have used a scale of 0 ...
... of shared data pages. Thus to achieve optimal performance a database system may have to use different algorithms depending on whether or not a data page is being shared. We are currently investigating this issue. To explore the effects of data sharing on system performance, we have used a scale of 0 ...
Downstream Capture/Apply: Oracle Streams
... 1. created a 2nd database called ora11b, used regular datafiles (non-asm database). Created an HR user in ora11b, granted connect, resource to HR. 2. ensured that the listener (which is controlled by the grid infrastructure) could listen for both ora11 and ora11b 3. saved off the entire server to en ...
... 1. created a 2nd database called ora11b, used regular datafiles (non-asm database). Created an HR user in ora11b, granted connect, resource to HR. 2. ensured that the listener (which is controlled by the grid infrastructure) could listen for both ora11 and ora11b 3. saved off the entire server to en ...
chapter 1 - Sacramento - California State University
... usually have many applications running against them. Now if these various applications have to communicate with each other they would also need their various database systems to interoperate with each other. There may be many real time scenarios in organizations that require heterogeneous databases ...
... usually have many applications running against them. Now if these various applications have to communicate with each other they would also need their various database systems to interoperate with each other. There may be many real time scenarios in organizations that require heterogeneous databases ...
Elmasri/Navathe, Fundamentals of Database Systems, Fourth
... specific XML DTD or XML schema. Since all the documents have the same structure, we can design a relational (or object) database to store the leaf-level data elements within the XML documents. Designing a specialized system for storing native XML data: A new type of database system based on the hier ...
... specific XML DTD or XML schema. Since all the documents have the same structure, we can design a relational (or object) database to store the leaf-level data elements within the XML documents. Designing a specialized system for storing native XML data: A new type of database system based on the hier ...
A Building Block for a Model
... a feature, the user clicks on it. This links the user to another Web page that provides more detailed information about the feature. The destination Web page is not usually generated by GBrowse, but is typically a component of the Web site, such as a static HTML page, a script, or an external destin ...
... a feature, the user clicks on it. This links the user to another Web page that provides more detailed information about the feature. The destination Web page is not usually generated by GBrowse, but is typically a component of the Web site, such as a static HTML page, a script, or an external destin ...
Transactions
... reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. Read committed — only committed records can be read, but ...
... reads of same record must return same value. However, a transaction may not be serializable – it may find some records inserted by a transaction but not find others. Read committed — only committed records can be read, but ...
IBM Database Conversion Workbench 2.0 Oracle to DB2 Conversion Guide IBM Software
... Page 2 of 38 ...
... Page 2 of 38 ...
DBC-e04-Chapter-07-PP
... DBMS that processes it – There are three types of data sources • A file data source is a file that can be shared among database users—the only requirement is that the users have the same DBMS driver and privilege to access the database • A system data source is one that is local to a single computer ...
... DBMS that processes it – There are three types of data sources • A file data source is a file that can be shared among database users—the only requirement is that the users have the same DBMS driver and privilege to access the database • A system data source is one that is local to a single computer ...
MCDB: A Monte Carlo Approach to Managing Uncertain Data
... key reasons. First, the representation of uncertainty is “hard wired” into the data model, and thus the types of uncertainty that can be processed are permanently limited by the specific model that has been chosen. If a new, unanticipated manifestation of uncertainty is later found to be important, ...
... key reasons. First, the representation of uncertainty is “hard wired” into the data model, and thus the types of uncertainty that can be processed are permanently limited by the specific model that has been chosen. If a new, unanticipated manifestation of uncertainty is later found to be important, ...
Implementing Geolocation
... At present we should require translation within the database, not the device. Licence holders find this preferable and there is little call for device translation. However, we might review this decision in the future. ...
... At present we should require translation within the database, not the device. Licence holders find this preferable and there is little call for device translation. However, we might review this decision in the future. ...
Data Mining - dbmanagement.info
... • Hierarchical clustering is often performed but tends to define partitions of data sets rather than “clusters” • Parametric methods are usually not amenable to hierarchical representation ...
... • Hierarchical clustering is often performed but tends to define partitions of data sets rather than “clusters” • Parametric methods are usually not amenable to hierarchical representation ...
Data Mining
... • Hierarchical clustering is often performed but tends to define partitions of data sets rather than “clusters” • Parametric methods are usually not amenable to hierarchical representation ...
... • Hierarchical clustering is often performed but tends to define partitions of data sets rather than “clusters” • Parametric methods are usually not amenable to hierarchical representation ...
Kroenke-Auer-DBP-e13-PPT
... • DBA is responsible for maintaining the data repository. • Data repositories are collections of metadata about users, databases, and its applications. • The repository may be: – Virtual, as it is composed of metadata from many different sources: DBMS, code libraries, Webpage generation and editing ...
... • DBA is responsible for maintaining the data repository. • Data repositories are collections of metadata about users, databases, and its applications. • The repository may be: – Virtual, as it is composed of metadata from many different sources: DBMS, code libraries, Webpage generation and editing ...
Best Practices ® IBM Data Server Security IBM
... You should know what type of threats you are up against. Data server security threats can be divided into four broad categories: data threats, configuration threats, audit threats, and executable threats. Data threats: Threats against data are mechanisms whereby data can be accessed by users or proc ...
... You should know what type of threats you are up against. Data server security threats can be divided into four broad categories: data threats, configuration threats, audit threats, and executable threats. Data threats: Threats against data are mechanisms whereby data can be accessed by users or proc ...
HadoopDB: An Architectural Hybrid of MapReduce and
... MapReduce lacks many of the features that have proven invaluable for structured data analysis workloads (largely due to the fact that MapReduce was not originally designed to perform structured data analysis), and its immediate gratification paradigm precludes some of the long term benefits of first ...
... MapReduce lacks many of the features that have proven invaluable for structured data analysis workloads (largely due to the fact that MapReduce was not originally designed to perform structured data analysis), and its immediate gratification paradigm precludes some of the long term benefits of first ...
DATA SOURCE AND RESOURCE REFERENCE SETTINGS
... IN WEBSPHERE 7.0, RATIONAL APPLICATION DEVELOPER FOR WEBSPHERE VER 8 WITH JAVA 6 AND MICROSOFT SQL SERVER 2008 By Wick Gankanda | Updated: August 8, 2012 ...
... IN WEBSPHERE 7.0, RATIONAL APPLICATION DEVELOPER FOR WEBSPHERE VER 8 WITH JAVA 6 AND MICROSOFT SQL SERVER 2008 By Wick Gankanda | Updated: August 8, 2012 ...
Concurrency_Control_Techniques
... If transaction T issues write_item (X) and version i of X has the highest write_TS(Xi) of all versions of X that is also less than or equal to TS(T), and read _TS(Xi) > TS(T), then abort and roll-back T; otherwise create a new version Xi and read_TS(X) = write_TS(Xj) = TS(T). If transaction T issues ...
... If transaction T issues write_item (X) and version i of X has the highest write_TS(Xi) of all versions of X that is also less than or equal to TS(T), and read _TS(Xi) > TS(T), then abort and roll-back T; otherwise create a new version Xi and read_TS(X) = write_TS(Xj) = TS(T). If transaction T issues ...
Oracle GoldenGate 11g Advanced Features and Best
... transformation, and delivery of transactional data across heterogeneous databases in real time. Using this technology, customers can achieve continuous availability for critical systems and realtime data integration for fast, easy access to current and accurate data. This document describes key feat ...
... transformation, and delivery of transactional data across heterogeneous databases in real time. Using this technology, customers can achieve continuous availability for critical systems and realtime data integration for fast, easy access to current and accurate data. This document describes key feat ...
Here - Emunix Emich
... In a single-user environment no concurrency control is required but a log is maintained under WAL. Note that at any time there will be one transaction in the system and it will be either in the commit table or in the active table. The recovery manager performs: ...
... In a single-user environment no concurrency control is required but a log is maintained under WAL. Note that at any time there will be one transaction in the system and it will be either in the commit table or in the active table. The recovery manager performs: ...
Oracle for Developer
... Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purc ...
... Safe Harbor Statement The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purc ...
Database Access with EJB Application Servers
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...
Using Automatic Workload Repository for Database
... • ADDM makes specific, actionable recommendations. • ADDM also lists areas of the system that are performing well – that don’t need tuning. ...
... • ADDM makes specific, actionable recommendations. • ADDM also lists areas of the system that are performing well – that don’t need tuning. ...
login.asp WHERE - Computer Science
... Server Page • Web applications – Communicating with databases • Use ActiveX Data Objects (ADO) – Provides uniform way for programs to connect with ...
... Server Page • Web applications – Communicating with databases • Use ActiveX Data Objects (ADO) – Provides uniform way for programs to connect with ...
Database Access with EJB Application Servers
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...