Chapter5
... Frame items are automatically repositioned based on their order in the Data Blocks list when you move or resize a frame, or modify the form layout using the Layout Wizard in reentrant mode Items are automatically when layout is modified in Layout Wizard in reentrant mode Items are not repositioned i ...
... Frame items are automatically repositioned based on their order in the Data Blocks list when you move or resize a frame, or modify the form layout using the Layout Wizard in reentrant mode Items are automatically when layout is modified in Layout Wizard in reentrant mode Items are not repositioned i ...
Disk and I/O Tuning on SQL Server 2005
... – LUNs set up for serial IO transaction load, not large block reads – Exchange best practices are carried forward to SQL Server even when they don’t apply! – OLTP and OLAP have conflicting needs (IO/sec versus MB/sec) ...
... – LUNs set up for serial IO transaction load, not large block reads – Exchange best practices are carried forward to SQL Server even when they don’t apply! – OLTP and OLAP have conflicting needs (IO/sec versus MB/sec) ...
item_name, color
... Or, run external language functions/procedures in a separate process, with no access to the database process’ ...
... Or, run external language functions/procedures in a separate process, with no access to the database process’ ...
Mining the evolutionary search
... Although the extensions described above have been shown to partially improve the efficiency of the search, they make simplifying assumptions by attacking rather the symptoms of premature convergence than the real cause ...
... Although the extensions described above have been shown to partially improve the efficiency of the search, they make simplifying assumptions by attacking rather the symptoms of premature convergence than the real cause ...
Database Transparencies
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system ...
... Interleaving actions of different user programs can lead to inconsistency: e.g., check is cleared while account balance is being computed. DBMS ensures such problems don’t arise: users can pretend they are using a single-user system ...
Database System Architectures
... Cached query plans (reused if same query submitted again) All database processes can access shared memory To ensure that no two processes are accessing the same data structure at the same time, databases systems implement mutual exclusion using either l ...
... Cached query plans (reused if same query submitted again) All database processes can access shared memory To ensure that no two processes are accessing the same data structure at the same time, databases systems implement mutual exclusion using either l ...
MS SQL Server 2005 Data Collector
... The additional Analysis Server is the central main component to operate as BW-System (OLAP) and will be promoted with SQL Server 2005. As the SQL Server is more and more in use as central database, services like SQL Server Agent for background processing and data exchange gain more and more signific ...
... The additional Analysis Server is the central main component to operate as BW-System (OLAP) and will be promoted with SQL Server 2005. As the SQL Server is more and more in use as central database, services like SQL Server Agent for background processing and data exchange gain more and more signific ...
Stored Procedures BY EXAMPLE
... Procedures are written for improved performance, security, and centralized maintainability of parts of the application logic - The network traffic between the client and server is reduced. - Performance gets improved since the SQL statements are parsed and optimized when the procedure is created - S ...
... Procedures are written for improved performance, security, and centralized maintainability of parts of the application logic - The network traffic between the client and server is reduced. - Performance gets improved since the SQL statements are parsed and optimized when the procedure is created - S ...
Document
... • Data analysis is used to derive and interpret information from data • Decision support is a methodology designed to extract information from data and to use such information as a basis for decision making • Decision support system is an arrangement of computerized tools used to assist managerial d ...
... • Data analysis is used to derive and interpret information from data • Decision support is a methodology designed to extract information from data and to use such information as a basis for decision making • Decision support system is an arrangement of computerized tools used to assist managerial d ...
Chapter5. Other Relational Languages
... covers other relational languages, including the relational calculus, QBE and Datalog. The chapters in this part describe data manipulation: queries, updates, insertions, and deletions, assuming a schema design has been provided. Schema design issues are deferred to Part 2. ...
... covers other relational languages, including the relational calculus, QBE and Datalog. The chapters in this part describe data manipulation: queries, updates, insertions, and deletions, assuming a schema design has been provided. Schema design issues are deferred to Part 2. ...
Microsoft Language Integrate Query (LINQ)
... side specifies the source to query using the "from" keyword. The variable i is a single object within the data source. This variable works as an iterator for the data source when the query is executed. This variable does not have to be called i, it can be called whatever the developer chooses. The " ...
... side specifies the source to query using the "from" keyword. The variable i is a single object within the data source. This variable works as an iterator for the data source when the query is executed. This variable does not have to be called i, it can be called whatever the developer chooses. The " ...
MCITP Administrator: Microsoft SQL Server 2005 Database
... • Use meaningful name for each column in the database. (For example, use LastName for a column holding the last name of an employee in the Employee table.) ...
... • Use meaningful name for each column in the database. (For example, use LastName for a column holding the last name of an employee in the Employee table.) ...
Loading Metadata to the IRS Research Compliance Data Warehouse (CDW) Website: From Excel Spreadsheet to SQL Server Relational Database Using SAS Macro and PROC SQL
... In general, CDW attempts to operationally address data quality in six areas: 1) Timeliness -- Minimize amount of time to capture, move, and release data to users; leverage new technologies or processes to increase efficiencies throughout the data supply chain. 2) Relevance -- Ensure data gaps are fi ...
... In general, CDW attempts to operationally address data quality in six areas: 1) Timeliness -- Minimize amount of time to capture, move, and release data to users; leverage new technologies or processes to increase efficiencies throughout the data supply chain. 2) Relevance -- Ensure data gaps are fi ...
Lecture 27
... Recursive Programming in Datalog: A more complicated definition of when two flights can be combined into a longer sequence of flights is to require that the second leaves an airport at least an hour after the first arrives at that airport. Now we can use IDB predicate, which we can call Connects(x,y ...
... Recursive Programming in Datalog: A more complicated definition of when two flights can be combined into a longer sequence of flights is to require that the second leaves an airport at least an hour after the first arrives at that airport. Now we can use IDB predicate, which we can call Connects(x,y ...
QuakeSim and SERVO w.s.
... resources through an XML-based Web Services framework. • Users access the services (and thus distributed resources) through Web browser-based Problem Solving Environment clients. • The Web services approach defines standard, programming language-independent application programming interfaces, so non ...
... resources through an XML-based Web Services framework. • Users access the services (and thus distributed resources) through Web browser-based Problem Solving Environment clients. • The Web services approach defines standard, programming language-independent application programming interfaces, so non ...
here
... To address the implementation challenges, we separate the generic design logic from its implementation techniques. To verify this point, we have shown that the same logic (i.e., the core ROPE structure) is implementable in three classes of technology: standalone PC (or mainframe/workstation), client ...
... To address the implementation challenges, we separate the generic design logic from its implementation techniques. To verify this point, we have shown that the same logic (i.e., the core ROPE structure) is implementable in three classes of technology: standalone PC (or mainframe/workstation), client ...
Comparison of Data Warehousing DBMS Platforms
... column being used for selection. Each time a qualifying value is found, the record is then included in the response to the query. If a table is large, as in a data warehouse, this process is very slow and consumes excessive computing resources. Indexing provides a partial solution by allowing the co ...
... column being used for selection. Each time a qualifying value is found, the record is then included in the response to the query. If a table is large, as in a data warehouse, this process is very slow and consumes excessive computing resources. Indexing provides a partial solution by allowing the co ...
Data Mining - Academia Sinica
... Rule pruning guided by robustness and other utility measures may yield robust and interesting rules Discovering robust knowledge to enhance database ...
... Rule pruning guided by robustness and other utility measures may yield robust and interesting rules Discovering robust knowledge to enhance database ...
Biota: The Biodiversity Database Manager.—Robert K. Colwell
... because insufficient memory was allocated to it. I also caused Biota to crash hard by loading a TIFF image; only PICT images are allowed by 4D. An unlimited number of Notes records can be attached to any record in the Specimens, Species, Collection, Locality, and Loans tables. Data about users can b ...
... because insufficient memory was allocated to it. I also caused Biota to crash hard by loading a TIFF image; only PICT images are allowed by 4D. An unlimited number of Notes records can be attached to any record in the Specimens, Species, Collection, Locality, and Loans tables. Data about users can b ...
Cache Augmented Database Management Systems
... asynchronously address this issue, it introduces two limitations. First, the resulting solution produces a large amount of stale data. Second, developing an application using such a solution might be challenging because a transaction may not observe its own update. We are almost certain that the QCN ...
... asynchronously address this issue, it introduces two limitations. First, the resulting solution produces a large amount of stale data. Second, developing an application using such a solution might be challenging because a transaction may not observe its own update. We are almost certain that the QCN ...
Chapter 21:Application Development and Administration
... grantees, the user may retain the privilege after the revocation. All privileges that depend on the privilege being revoked are also ...
... grantees, the user may retain the privilege after the revocation. All privileges that depend on the privilege being revoked are also ...
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.