3.1.1 The Structure of JDBC
... into an API specific to the desired driver. As it turns out, this kind of driver is extremely flexible, since it requires no code installed on the client and a single driver can actually provide access to multiple databases. Type 4 Using network protocols built into the database engine, type 4 drive ...
... into an API specific to the desired driver. As it turns out, this kind of driver is extremely flexible, since it requires no code installed on the client and a single driver can actually provide access to multiple databases. Type 4 Using network protocols built into the database engine, type 4 drive ...
The design and implementation of an object-oriented
... Database designs in today's information-intensive environment, challenge the database-system user to adhere to strict and somewhat archaic means, i.e., traditional data models and their data languages, of expressing their database applications. In light of these requirements, the user must purchase ...
... Database designs in today's information-intensive environment, challenge the database-system user to adhere to strict and somewhat archaic means, i.e., traditional data models and their data languages, of expressing their database applications. In light of these requirements, the user must purchase ...
A, r - UCLA Computer Science
... Equivalence of Expressions Relations generated by two equivalent expressions have the same set of attributes and contain the same set of tuples, although their attributes may be ordered differently. ...
... Equivalence of Expressions Relations generated by two equivalent expressions have the same set of attributes and contain the same set of tuples, although their attributes may be ordered differently. ...
Chapter 23 – ASP.NET
... Executing Forms in Web-based Environment Web applications rely on a Web browser and a Web server. The Web server controls coordination. When using a form on the Web, the executable file is registered with the Web server. To execute the Web form, a user requests a URL in his Web browser. The U ...
... Executing Forms in Web-based Environment Web applications rely on a Web browser and a Web server. The Web server controls coordination. When using a form on the Web, the executable file is registered with the Web server. To execute the Web form, a user requests a URL in his Web browser. The U ...
CSS122_WINTER09_LECTURE08
... As in the previous example, subqueries in the INSERT command work, but only if the update table and the subquery table are different. This rule only applies to MySQL, other database ...
... As in the previous example, subqueries in the INSERT command work, but only if the update table and the subquery table are different. This rule only applies to MySQL, other database ...
cos346day20
... Indexes • Indexes are special data structures used to improve database performance • SQL Server automatically creates an index on all primary and foreign keys • Additional indexes may be assigned on other columns that are: – Frequently used in WHERE clauses – Used for sorting data ...
... Indexes • Indexes are special data structures used to improve database performance • SQL Server automatically creates an index on all primary and foreign keys • Additional indexes may be assigned on other columns that are: – Frequently used in WHERE clauses – Used for sorting data ...
- Courses - University of California, Berkeley
... • Hierarchical – Need to make decisions about access paths ...
... • Hierarchical – Need to make decisions about access paths ...
JDBC - Technicalsymposium
... specification to which both JDBC driver vendors and JDBC developers (like you) adhere when developing applications. JDBC is a very popular data access standard. RDBMS (Relational Database Management Systems) or third-party vendors develop drivers, which adhere to the JDBC specification. Since the dr ...
... specification to which both JDBC driver vendors and JDBC developers (like you) adhere when developing applications. JDBC is a very popular data access standard. RDBMS (Relational Database Management Systems) or third-party vendors develop drivers, which adhere to the JDBC specification. Since the dr ...
Database Deployment scenarios and performance on SSD arrays
... data, the execution times for curation activities can stretch into weeks at a time. To address this issue, there are two main approaches: ...
... data, the execution times for curation activities can stretch into weeks at a time. To address this issue, there are two main approaches: ...
Fudcon talk
... • New Storage Engine • Substantially reduces storage requirements >50% • Information is stored packed via gzip, unzipped on the fly ...
... • New Storage Engine • Substantially reduces storage requirements >50% • Information is stored packed via gzip, unzipped on the fly ...
Fast Vertical Mining Using Diffsets
... have been enumerated. The Apriori heuristic achieves good performance gain by (possibly significantly) reducing the size of candidate sets. Apriori uses the downward closure property of itemset support to prune the search space — the property that all subsets of a frequent itemset must themselves be ...
... have been enumerated. The Apriori heuristic achieves good performance gain by (possibly significantly) reducing the size of candidate sets. Apriori uses the downward closure property of itemset support to prune the search space — the property that all subsets of a frequent itemset must themselves be ...
Chapter 09 Presentation
... To understand differences in cursor types. To learn techniques for database security. To understand the fundamental concepts of database backup and recovery. Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
... To understand differences in cursor types. To learn techniques for database security. To understand the fundamental concepts of database backup and recovery. Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
The 24th International Conference on Very Large Databases. New
... truly scalable solutions because the foundation is Objectivity’s advanced distributed architecture which provides a single logical view of the federated database across multiple heterogeneous servers. The Java binding protects customer investment by ensuring that objects created using the Java langu ...
... truly scalable solutions because the foundation is Objectivity’s advanced distributed architecture which provides a single logical view of the federated database across multiple heterogeneous servers. The Java binding protects customer investment by ensuring that objects created using the Java langu ...
A Mobile-Agent Based Infrastructure for eWork and Ebussiness
... client/agent/server adaptation of the framework provides a performance improvement of approximately a factor of ten. For the fixed network, the gains are about 40% and 30% respectively. These performance results were gained while using the Aglets Workbench [5] for the implementation of mobile agent ...
... client/agent/server adaptation of the framework provides a performance improvement of approximately a factor of ten. For the fixed network, the gains are about 40% and 30% respectively. These performance results were gained while using the Aglets Workbench [5] for the implementation of mobile agent ...
Data Warehouse
... database schema from the existing relational database The schema was developed because existing relational modeling techniques, ER and normalization did not yield a database structure that served advanced data analysis requirements well ...
... database schema from the existing relational database The schema was developed because existing relational modeling techniques, ER and normalization did not yield a database structure that served advanced data analysis requirements well ...
IOSR Journal of Computer Engineering (IOSR-JCE)
... Existing database clients and tools make great efforts to help developers design and generate the query forms [2].They provide visual interfaces for developers to create or customize query forms. This system allows end-users to customize the existing query form at runtime. It provides a mechanism to ...
... Existing database clients and tools make great efforts to help developers design and generate the query forms [2].They provide visual interfaces for developers to create or customize query forms. This system allows end-users to customize the existing query form at runtime. It provides a mechanism to ...
DATABASE DEPENDENCIES
... (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied. The result, chase(C), which may be infinite, can be seen as a model for C. It is the case that C |= c if and only ...
... (in each application, new variables are substituted for existential variables); in the case of an equality-generating dependency, variables are equated until the dependency is satisfied. The result, chase(C), which may be infinite, can be seen as a model for C. It is the case that C |= c if and only ...
CAMINAR Catchment Management and Mining Impacts in Arid and
... Decision Support Tools were focused on the development of a spatial database that integrates both geographic and non-geographical data. The present version of the GIS environment database is the cumulated work of the teams from Workpackages 2-4, responsible for the data collection, and of the team f ...
... Decision Support Tools were focused on the development of a spatial database that integrates both geographic and non-geographical data. The present version of the GIS environment database is the cumulated work of the teams from Workpackages 2-4, responsible for the data collection, and of the team f ...
Introducing Base - The Document Foundation Wiki
... A database is a collection of information organized so that it can easily be accessed, managed, and updated. (This is how it is defined at www.whatis.com.) Many database programs are available today: Base, MS Access, File Maker Pro, MySQL, Oracle, and PostgreSQL are some examples. Each program creat ...
... A database is a collection of information organized so that it can easily be accessed, managed, and updated. (This is how it is defined at www.whatis.com.) Many database programs are available today: Base, MS Access, File Maker Pro, MySQL, Oracle, and PostgreSQL are some examples. Each program creat ...
Unit 6 Database Design and the ER Model
... Read authorization - allows reading, but not modification of data. Insert authorization - allows insertion of new data, but not modification of existing data. Update authorization - allows modification, but not deletion of data. Delete authorization - allows deletion of data ...
... Read authorization - allows reading, but not modification of data. Insert authorization - allows insertion of new data, but not modification of existing data. Update authorization - allows modification, but not deletion of data. Delete authorization - allows deletion of data ...
Ebaa Fayyoumi
... Proctor for deferred examination which require especial skills for monitoring several exams in the same class room. Proctor for PMC students which require more patience. Besides being able to accommodate the disable student either by offering especial programs such as JAWS, or by reading/ writing th ...
... Proctor for deferred examination which require especial skills for monitoring several exams in the same class room. Proctor for PMC students which require more patience. Besides being able to accommodate the disable student either by offering especial programs such as JAWS, or by reading/ writing th ...
PPT
... Exploring Microsoft Access 2003 Chapter 4- Proficiency: Relational Databases, Charts, and the Switchboard Robert Grauer and Maryann Barber ...
... Exploring Microsoft Access 2003 Chapter 4- Proficiency: Relational Databases, Charts, and the Switchboard Robert Grauer and Maryann Barber ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.