The Researcher`s Guide to the Data Deluge
... user’s requests. Such a kernel differs from conventional kernels by trying to identify and avoid performance degradation points onthe-fly and to answer part of the query within strict time bounds, but also without changing the query focus. Its execution plan should be organized such that a (non-empt ...
... user’s requests. Such a kernel differs from conventional kernels by trying to identify and avoid performance degradation points onthe-fly and to answer part of the query within strict time bounds, but also without changing the query focus. Its execution plan should be organized such that a (non-empt ...
Luku 5 * Tietojen hakeminen sovelluksiin
... • The advantage of open technologies (such as HTTP) is that that the used development tools don't matter as long as standards are followed. Therefore your can write your Windows 8 application's interface in Visual Studio and the background system in Python or PHP if you so wish. • There are, however ...
... • The advantage of open technologies (such as HTTP) is that that the used development tools don't matter as long as standards are followed. Therefore your can write your Windows 8 application's interface in Visual Studio and the background system in Python or PHP if you so wish. • There are, however ...
Supporting Join Queries
... If all the relevant tuples are inside one DBMS, then we can pass the query on to that DBMS query engine. - EASY! ...
... If all the relevant tuples are inside one DBMS, then we can pass the query on to that DBMS query engine. - EASY! ...
Database System Architectures
... Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity z ...
... Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity z ...
Database System Architectures
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
Database System Architectures
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
Materialy/32/Lectures Oracle
... into the DB cache, there processed and available for the user process blocks in the DB cache can be used by several processes (good tuning means 9 logical reads related to one physical read from disk) DB blocks are subject of last recently used algorithm (LRU); blocks not used for the longest ti ...
... into the DB cache, there processed and available for the user process blocks in the DB cache can be used by several processes (good tuning means 9 logical reads related to one physical read from disk) DB blocks are subject of last recently used algorithm (LRU); blocks not used for the longest ti ...
Enterprise Resource Planning
... Databases and Bolt- ons Database Configuration • selection of database tables in the thousands ...
... Databases and Bolt- ons Database Configuration • selection of database tables in the thousands ...
slides
... With a small database, the performance of a query is not an issue However, when there are many thousands of rows in the database tables, it can take a lot more time to extract the rows you want If query performance is poor, the system can seem unresponsive to the users Introduction to Database Devel ...
... With a small database, the performance of a query is not an issue However, when there are many thousands of rows in the database tables, it can take a lot more time to extract the rows you want If query performance is poor, the system can seem unresponsive to the users Introduction to Database Devel ...
Proceedings of the FREENIX Track: 2004 USENIX Annual Technical Conference USENIX Association
... tional APIs to benefit from the clustering features. Moreover, these different implementations do not interoperate well with each other. We present Clustered JDBC (C-JDBC), an open-source middleware solution for database clustering on a sharednothing architecture built with commodity hardware. C-JDB ...
... tional APIs to benefit from the clustering features. Moreover, these different implementations do not interoperate well with each other. We present Clustered JDBC (C-JDBC), an open-source middleware solution for database clustering on a sharednothing architecture built with commodity hardware. C-JDB ...
developing multithreaded database application using java tools and
... the back-end server [14,15]. Figure 2. illustrates a two-tier database design, where the client is connected to the server through a socket [5,6,7,8,9,15] connection. The program design method is very carefully used to accommodate all types of changes taking place in database design strategies [10]. ...
... the back-end server [14,15]. Figure 2. illustrates a two-tier database design, where the client is connected to the server through a socket [5,6,7,8,9,15] connection. The program design method is very carefully used to accommodate all types of changes taking place in database design strategies [10]. ...
Ten Things You Can Do To Make InterBase Scream
... Prepared queries and query parameters InterBase supports parameterized queries in DSQL, for cases when a given statement is to be executed multiple times with different values. For example, loading a table with data might require a series of INSERT statements with values for each record inserted. Ex ...
... Prepared queries and query parameters InterBase supports parameterized queries in DSQL, for cases when a given statement is to be executed multiple times with different values. For example, loading a table with data might require a series of INSERT statements with values for each record inserted. Ex ...
CS221 Lecture: The Relational Data Model last revised June 25, 2012
... F. What about relations (tables) that represent relationships? Since relations are always sets, they, too, need a primary key. 1. The primary key of a relation that represents a relationship between entity sets is generally the union of the primary key attributes of all of the entity sets it relate ...
... F. What about relations (tables) that represent relationships? Since relations are always sets, they, too, need a primary key. 1. The primary key of a relation that represents a relationship between entity sets is generally the union of the primary key attributes of all of the entity sets it relate ...
Slide 1
... Injection Flaws Common in web applications. Caused when user input is evaluated as part of a ...
... Injection Flaws Common in web applications. Caused when user input is evaluated as part of a ...
chapter19
... – Checkpoint facility, which enables updates to database in progress to be made permanent. – Recovery manager, which allows DBMS to restore database to consistent state following a failure. ...
... – Checkpoint facility, which enables updates to database in progress to be made permanent. – Recovery manager, which allows DBMS to restore database to consistent state following a failure. ...
Simultaneous Pipelining in QPipe: Exploiting Work Sharing
... overlap, e.g., they access the same relations on disk, compute similar aggregates, or share intermediate results. Unfortunately, run-time sharing in modern database engines is limited by the paradigm of invoking an independent set of operator instances per query, potentially missing sharing opportun ...
... overlap, e.g., they access the same relations on disk, compute similar aggregates, or share intermediate results. Unfortunately, run-time sharing in modern database engines is limited by the paradigm of invoking an independent set of operator instances per query, potentially missing sharing opportun ...
Query Answering Under Exact View Assumption in Local As View
... Definition 5 A tuple t is a certain answer for a query Q in respect to DIS I if t is an answer to Q for every legal global database of I. This term is synonym to ’a sceptical answer’ term used in AI community. A tuple t is a possible answer for a query Q in respect to DIS I, if t is an answer to Q f ...
... Definition 5 A tuple t is a certain answer for a query Q in respect to DIS I if t is an answer to Q for every legal global database of I. This term is synonym to ’a sceptical answer’ term used in AI community. A tuple t is a possible answer for a query Q in respect to DIS I, if t is an answer to Q f ...
MS Access Databases
... records are shown, a sort order, calculated fields and more. Beware though that queries are “live” data and this means that any change you make to a query is also made to the underlying table(s). For example using the names and addresses database you might need a query that lists only those records ...
... records are shown, a sort order, calculated fields and more. Beware though that queries are “live” data and this means that any change you make to a query is also made to the underlying table(s). For example using the names and addresses database you might need a query that lists only those records ...
Why do we even care?
... How does one support keyword queries in databases? How does one support imprecise queries in databases? How do we handle incompleteness/inconsistency in databases? Does it make sense to focus on total response time minimization • As against a multi-objective cost/benefit optimization? The DB communi ...
... How does one support keyword queries in databases? How does one support imprecise queries in databases? How do we handle incompleteness/inconsistency in databases? Does it make sense to focus on total response time minimization • As against a multi-objective cost/benefit optimization? The DB communi ...
Comparing the Performance of Object and Object Relational
... When object oriented programming languages such as Java, C++ and Smalltalk became popular in the 1980s, application developers found a mismatch between their applications’ needs and Relational Database Management Systems (RDBMSs). The mismatch led to the invention of Object Database Management Syste ...
... When object oriented programming languages such as Java, C++ and Smalltalk became popular in the 1980s, application developers found a mismatch between their applications’ needs and Relational Database Management Systems (RDBMSs). The mismatch led to the invention of Object Database Management Syste ...
JDBC
... Drivers needed are dynamically loaded, Connections with databases are established, Each connection has transaction semantics, Transactions are executed by: ...
... Drivers needed are dynamically loaded, Connections with databases are established, Each connection has transaction semantics, Transactions are executed by: ...
Object Tables
... Table data may be exported from Schema 2 or 4 and imported into same schema Object tables must reference Schema 1 or Schema 2 in DDL Synonyms required for Schema 1 or 3 methods to reference object table ...
... Table data may be exported from Schema 2 or 4 and imported into same schema Object tables must reference Schema 1 or Schema 2 in DDL Synonyms required for Schema 1 or 3 methods to reference object table ...
Database Processing
... increases popularity of personal databases Graphical User Interface (GUI) make it easy to use – Examples of early DBMS products: dBase, R:base, and Paradox ...
... increases popularity of personal databases Graphical User Interface (GUI) make it easy to use – Examples of early DBMS products: dBase, R:base, and Paradox ...
using openaccess sdk to expose erp data
... OLE DB APIs, SQL parsing, distributed query processing, aggregation, and a client/ server protocol (if required). These components interact with the Interface Provider code that is implemented for a specific ERP system. The Interface Provider code implements the schema management, any required query ...
... OLE DB APIs, SQL parsing, distributed query processing, aggregation, and a client/ server protocol (if required). These components interact with the Interface Provider code that is implemented for a specific ERP system. The Interface Provider code implements the schema management, any required query ...
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.