Legacy Connectivity
... In addition to accessing legacy databases using JDBC, other more object-oriented approaches may be used. Sun's Java Blend (object-relational mapping) product provides the capability to access SQLcompatible databases as collections of objects. OQL-compatible databases provide the capability to stor ...
... In addition to accessing legacy databases using JDBC, other more object-oriented approaches may be used. Sun's Java Blend (object-relational mapping) product provides the capability to access SQLcompatible databases as collections of objects. OQL-compatible databases provide the capability to stor ...
Bean Class
... This means if you update the in-memory entity bean instance, the database should automatically be updated as well. (Synchronization) So there must be a mechanism to transfer information back and forth between the Java objects and the database. Entity bean class must implement two special methods, ej ...
... This means if you update the in-memory entity bean instance, the database should automatically be updated as well. (Synchronization) So there must be a mechanism to transfer information back and forth between the Java objects and the database. Entity bean class must implement two special methods, ej ...
Part 21 - Criteria for Relational Databases
... Null values (distinct from the empty character string or a string of blank characters and distinct from zero or any other number) are supported in fully relational database management systems for representing missing information and inapplicable information in a systematic way, independent of data t ...
... Null values (distinct from the empty character string or a string of blank characters and distinct from zero or any other number) are supported in fully relational database management systems for representing missing information and inapplicable information in a systematic way, independent of data t ...
Continuous Queries and Publish/Subscribe
... Allows users to query over this database. Since Tapestry doesn't use triggers (time is used), it can be implemented in any commercial database that supports SQL applications. ...
... Allows users to query over this database. Since Tapestry doesn't use triggers (time is used), it can be implemented in any commercial database that supports SQL applications. ...
PJIIT 2 OMG
... • ODRA (Object Database for Rapid Application development): – Object-oriented database management system based on StackBased Approach (SBA) and Stack-Based Query Language (SBQL) – Client/server – Imperative constructs, modules, procedures, classes, types, methods, static inheritance – Updateable OO ...
... • ODRA (Object Database for Rapid Application development): – Object-oriented database management system based on StackBased Approach (SBA) and Stack-Based Query Language (SBQL) – Client/server – Imperative constructs, modules, procedures, classes, types, methods, static inheritance – Updateable OO ...
Proximity Search in Databases - Stanford InfoLab
... and/or special permission from the Endowment. ...
... and/or special permission from the Endowment. ...
JDBC and Database Programming in Java - CS
... JDBC and Database Programming in Java Representation and Management of Data on the Internet - dbi ...
... JDBC and Database Programming in Java Representation and Management of Data on the Internet - dbi ...
ch24
... (master) site, and can be updated by only that site. Using ‘publish-and-subscribe’ metaphor, master site makes data available. Other sites ‘subscribe’ to data owned by master site, receiving read-only copies. Potentially, each site can be master site for nonoverlapping data sets, but update co ...
... (master) site, and can be updated by only that site. Using ‘publish-and-subscribe’ metaphor, master site makes data available. Other sites ‘subscribe’ to data owned by master site, receiving read-only copies. Potentially, each site can be master site for nonoverlapping data sets, but update co ...
Chapter 21:Application Development and Administration
... Set orientation -> fewer calls to database E.g. tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoids re-parsing and re-optimi ...
... Set orientation -> fewer calls to database E.g. tune program that computes total salary for each department using a separate SQL query by instead using a single query that computes total salaries for all department at once (using group by) Use stored procedures: avoids re-parsing and re-optimi ...
DASWIS01
... acyclic join graph is simple as there exists only one join tree for any set of tables. For a cyclic join graph, there may exist more than one join tree for a set of tables and each tree may have different semantics. ...
... acyclic join graph is simple as there exists only one join tree for any set of tables. For a cyclic join graph, there may exist more than one join tree for a set of tables and each tree may have different semantics. ...
Build a database IV: Create queries for a new Access database
... you for starting and ending dates. The query will give you just the records that fall between those dates. Build a database IV: Create queries for a new Access database ...
... you for starting and ending dates. The query will give you just the records that fall between those dates. Build a database IV: Create queries for a new Access database ...
XPeer: A Self-organizing XML P2P Database System
... that can evolve over time. Topology changes mostly affect the indexing structures used for routing queries. For instance, if a node pi containing data (let’s say a set of XML nodes s) relevant for a query q suddenly becomes unreachable, then any index entry associating pi to s should be updated to av ...
... that can evolve over time. Topology changes mostly affect the indexing structures used for routing queries. For instance, if a node pi containing data (let’s say a set of XML nodes s) relevant for a query q suddenly becomes unreachable, then any index entry associating pi to s should be updated to av ...
12Access.12 - unix.eng.ua.edu
... Set and unset a database password • If data is very important and meant to be viewed only by authorized users, it is a good idea to assign a password to the database. • When you set a password, you usually establish exclusive access, meaning that only one user can access the database at a time. • Yo ...
... Set and unset a database password • If data is very important and meant to be viewed only by authorized users, it is a good idea to assign a password to the database. • When you set a password, you usually establish exclusive access, meaning that only one user can access the database at a time. • Yo ...
Comments on IT/GIS Elements - Society for Hawaiian Archaeology
... from four other states in 2013 and again in 2014, which are also not represented or do not appear to have been considered in any way. Finally, the plan does not discuss how the inventory database will interact with/link to the GIS, the Docushare document scanning/archiving system, the report library ...
... from four other states in 2013 and again in 2014, which are also not represented or do not appear to have been considered in any way. Finally, the plan does not discuss how the inventory database will interact with/link to the GIS, the Docushare document scanning/archiving system, the report library ...
6231B_07
... You have performed a database backup for the Proseware, Inc. databases. You need to test the database restore process. You have been provided with a series of backups taken from a database on another server that you need to restore to the Proseware, Inc. server with the database name MarketYields. T ...
... You have performed a database backup for the Proseware, Inc. databases. You need to test the database restore process. You have been provided with a series of backups taken from a database on another server that you need to restore to the Proseware, Inc. server with the database name MarketYields. T ...
Relational Algebra - KFUPM Faculty List
... (2) Semantics Check: The syntactically correct query is checked for semantic errors including type mismatches, invalid column references, and invalid relation names. If there are any semantic errors, the interpreter reports these to the terminal and waits to read another query; otherwise the interpr ...
... (2) Semantics Check: The syntactically correct query is checked for semantic errors including type mismatches, invalid column references, and invalid relation names. If there are any semantic errors, the interpreter reports these to the terminal and waits to read another query; otherwise the interpr ...
Databases Definition - Database It is often said that we live in an
... of anorganisation. It has 2 most important properties: It is integrated and it is shared. Integration allows reduction of data redundancy and facilitates data access since previously distinct data files will have been logically and coherently organised. Sharing allows all potential users in an organ ...
... of anorganisation. It has 2 most important properties: It is integrated and it is shared. Integration allows reduction of data redundancy and facilitates data access since previously distinct data files will have been logically and coherently organised. Sharing allows all potential users in an organ ...
Database Design using UML
... schema of an ODMG compliant database. ODL supports all semantic constructs of the ODMG object model. ODL is independent of any programming language, and hence provides means for the portability of database schema across complaint ODBMSs. The database schema may comprise of: ...
... schema of an ODMG compliant database. ODL supports all semantic constructs of the ODMG object model. ODL is independent of any programming language, and hence provides means for the portability of database schema across complaint ODBMSs. The database schema may comprise of: ...
20InternalDBAspects
... In v5.2, there is a new way to control concurrency. A class can automatically maintain property containing integer version number for each of its objects. When object is filed, version number is incremented. ...
... In v5.2, there is a new way to control concurrency. A class can automatically maintain property containing integer version number for each of its objects. When object is filed, version number is incremented. ...
Generalized Multidimensional Association Rules 1 Introduction
... dimensional attributes. However, the situation in the real world is not always so simple. For example, if we want to mine the commodity wholesale market data in order to predict the price trends, then there will be at least two dimensional attributes with each transaction record, maybe one is the tr ...
... dimensional attributes. However, the situation in the real world is not always so simple. For example, if we want to mine the commodity wholesale market data in order to predict the price trends, then there will be at least two dimensional attributes with each transaction record, maybe one is the tr ...
Semantics2
... • Receive queries from a mediator • Plan and execute how to retrieve the data from its source • Transform data to global data model • Send to mediator For an SQL source, these are rather easy For a restricted capability source, may require • A series of queries on the source, or • A program to be ex ...
... • Receive queries from a mediator • Plan and execute how to retrieve the data from its source • Transform data to global data model • Send to mediator For an SQL source, these are rather easy For a restricted capability source, may require • A series of queries on the source, or • A program to be ex ...
Data - UET Taxila
... The database administrator (DBA) carries through the standards and procedures established by the data administrator. DBA can sometimes take up the role of data ...
... The database administrator (DBA) carries through the standards and procedures established by the data administrator. DBA can sometimes take up the role of data ...
Versant Object Database
Versant Object Database (VOD) is an object database software product developed by Versant Corporation.The Versant Object Database enables developers using object oriented languages to transactionally store their information by allowing the respective language to act as the Data Definition Language (DDL) for the database. In other words, the memory model is the database schema model.In general, persistence in VOD in implemented by declaring a list of classes, then providing a transaction demarcation application programming interface to use cases. Respective language integrations adhere to the constructs of that language, including syntactic and directive sugars.Additional APIs exist, beyond simple transaction demarcation, providing for the more advanced capabilities necessary to address practical issues found when dealing with performance optimization and scalability for systems with large amounts of data, many concurrent users, network latency, disk bottlenecks, etc.