Session3_Module5
... from one or more tables is referred to as a partitioned view. If the base tables reside in the same server, the view is referred to as a local partitioned view. If the base tables reside in different servers, the view is referred to as a distributed partitioned view. ...
... from one or more tables is referred to as a partitioned view. If the base tables reside in the same server, the view is referred to as a local partitioned view. If the base tables reside in different servers, the view is referred to as a distributed partitioned view. ...
RGMAUserApplicationShort
... details of all producers that are publishing to tables in the virtual database and it also holds the details of “continuous” consumers. MEDIATOR: a set of rules for deciding which data providers to contact for any given query. ...
... details of all producers that are publishing to tables in the virtual database and it also holds the details of “continuous” consumers. MEDIATOR: a set of rules for deciding which data providers to contact for any given query. ...
BQ36404412
... called „databases‟ in 1964 [1]. In 70‟s different database architectures were devised like hierarchical database system [2] and object oriented databases. However, the real revolution came with the inception of relational databases by E.F.Codd in 1970 [2, 3]. Relational databases tackled the problem ...
... called „databases‟ in 1964 [1]. In 70‟s different database architectures were devised like hierarchical database system [2] and object oriented databases. However, the real revolution came with the inception of relational databases by E.F.Codd in 1970 [2, 3]. Relational databases tackled the problem ...
Server integrated systems and methods for processing precomputed
... mariZation or consolidation of roWs in database tables, typically using a set function, such as SUM or COUNT, and an optional GROUP BY clause. An aggregate table is typically a table that summariZes or consolidates detail level records from other database tables. ...
... mariZation or consolidation of roWs in database tables, typically using a set function, such as SUM or COUNT, and an optional GROUP BY clause. An aggregate table is typically a table that summariZes or consolidates detail level records from other database tables. ...
SELECT
... CASCADE or RESTRICT for drop behavior » CASCADE: all constraints and views that reference the column are dropped automatically along with the column » RESTRICT: the column is drop only if no views or constraints reference the column » Example ALTER TABLE COMPANY.EMPLOYEE DROP ...
... CASCADE or RESTRICT for drop behavior » CASCADE: all constraints and views that reference the column are dropped automatically along with the column » RESTRICT: the column is drop only if no views or constraints reference the column » Example ALTER TABLE COMPANY.EMPLOYEE DROP ...
3.Dealing (again) with forms in Php
... Rails, Perl, et al. Each one with its own feature set, each with its own advantages/disadvantages – but the technology that powers most of the current websites is called the LAMP architecture. LAMP stands for Linux, Apache, MySQL, PHP; basically what it signifies is that most servers out there today ...
... Rails, Perl, et al. Each one with its own feature set, each with its own advantages/disadvantages – but the technology that powers most of the current websites is called the LAMP architecture. LAMP stands for Linux, Apache, MySQL, PHP; basically what it signifies is that most servers out there today ...
hotel korth
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
ppt
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
... Main-Memory Database Optimizations To reduce space overheads, main-memory databases can use ...
9I DATA GUARD: TRUTH, MYTHS, AND FAILOVER 9i Data Guard
... When a primary database archives to a standby site, log transport services automatically archive the online redo logs through Oracle Net to a directory on the standby site. As redo logs are generated on the primary database, log transport services automatically archive them and log apply services ap ...
... When a primary database archives to a standby site, log transport services automatically archive the online redo logs through Oracle Net to a directory on the standby site. As redo logs are generated on the primary database, log transport services automatically archive them and log apply services ap ...
login.asp WHERE - Computer Science
... it must create an ADO Connection object and connect to the database. The following two lines of JavaScript code can be added to an ASP script to create a Connection object, store the object in a variable named conn, and open a connection to the database named bighitmdb. Conn = Server.CreateObject(“A ...
... it must create an ADO Connection object and connect to the database. The following two lines of JavaScript code can be added to an ASP script to create a Connection object, store the object in a variable named conn, and open a connection to the database named bighitmdb. Conn = Server.CreateObject(“A ...
focus on: fdr/upstream`s online database solutions
... easy-to-use shared library which is loaded into UPSTREAM when needed and extends UPSTREAM’s capabilities without the use of an external program. A single backup can include files that may or may not use PlugIns and PlugIn types can be mixed. This will allow the DBA to intermix the backups of multipl ...
... easy-to-use shared library which is loaded into UPSTREAM when needed and extends UPSTREAM’s capabilities without the use of an external program. A single backup can include files that may or may not use PlugIns and PlugIn types can be mixed. This will allow the DBA to intermix the backups of multipl ...
Chapter 10
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
PHP and MySQL
... • Approach 1 - Global variables – Disadvantage: • Need to change program if data change • Programs downstream need to change too ...
... • Approach 1 - Global variables – Disadvantage: • Need to change program if data change • Programs downstream need to change too ...
extended version - Department of Computer Science, University of
... unions of conjunctive queries [21]. The processing of such a query critically draws on the observation that the traces of the compilation for subqueries of the input query are OBDDs, whose variable orders are compatible, depths are linear in the database size, and widths only depend on the number of ...
... unions of conjunctive queries [21]. The processing of such a query critically draws on the observation that the traces of the compilation for subqueries of the input query are OBDDs, whose variable orders are compatible, depths are linear in the database size, and widths only depend on the number of ...
Implementing Geolocation
... Providing a time-validity stamp to the data is a better solution than setting a minimum update time. The default might be two hours initially. ...
... Providing a time-validity stamp to the data is a better solution than setting a minimum update time. The default might be two hours initially. ...
Middleware-based Database Replication: The Gaps
... management) are often forgotten—this limits the impact research systems can have on the real world. Motivated by these findings, we draft possible agendas for academic and industrial research. This paper concentrates exclusively on middleware-based1 replication for OLTP workloads. The prevalent arch ...
... management) are often forgotten—this limits the impact research systems can have on the real world. Motivated by these findings, we draft possible agendas for academic and industrial research. This paper concentrates exclusively on middleware-based1 replication for OLTP workloads. The prevalent arch ...
Techwave_2001_EM413-_Mark_Culp
... Cross Database Joins – Why is it slow? If ASA uses a plan that has the remote table on the right side of the join operator, then the remote data will be hauled across the communication link multiple times – once for each left hand side row. For each row s in S for each row r in ( select * from R ) ...
... Cross Database Joins – Why is it slow? If ASA uses a plan that has the remote table on the right side of the join operator, then the remote data will be hauled across the communication link multiple times – once for each left hand side row. For each row s in S for each row r in ( select * from R ) ...
SQLBasicTraining
... TOP N queries useful when you want to explore data in a table. Example, I have a LIMS database, I would use SELECT TOP 100 * FROM SAMPLES so I can see some data but don’t want 200K records. ...
... TOP N queries useful when you want to explore data in a table. Example, I have a LIMS database, I would use SELECT TOP 100 * FROM SAMPLES so I can see some data but don’t want 200K records. ...
Improving Database Performance
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
Chapter 7: Relational Database Design
... for each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are ...
... for each pair of transactions Ti and Tj such that Tj reads a data item previously written by Ti, the commit operation of Ti appears before the read operation of Tj. Every cascadeless schedule is also recoverable It is desirable to restrict the schedules to those that are ...
s of Querying a Database
... statement and its various additional clauses • It is essential that you know the basics of the SELECT statement to be able to use SQL*Plus effectively as a database administrator • Numerous advanced query types available in an Oracle database, including joins, subqueries, and other specialized queri ...
... statement and its various additional clauses • It is essential that you know the basics of the SELECT statement to be able to use SQL*Plus effectively as a database administrator • Numerous advanced query types available in an Oracle database, including joins, subqueries, and other specialized queri ...
PowerPoint Chapter 10
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
... • Transaction log keeps track of all transactions that modify database • Concurrency control coordinates simultaneous execution of transactions • Scheduler is responsible for establishing order in which concurrent transaction operations are executed ...
A Hands-On Guide to Relational Database Design
... connection for each relationship. Depending upon the type of relationship, you would use either a Primary key or a “linking” or “composite” table to make the connection between a pair of tables based upon the type of relationship you want to establish. The fifth phase of the database design process ...
... connection for each relationship. Depending upon the type of relationship, you would use either a Primary key or a “linking” or “composite” table to make the connection between a pair of tables based upon the type of relationship you want to establish. The fifth phase of the database design process ...
Access versus Excel - Center
... require their involvement. When an Access application is created initially, the features needed in the future cannot be anticipated, nor can the budget be justified. It's a case of database evolution, and now it's time to evolve from Access and the Jet database engine. You have many ways to migrate ...
... require their involvement. When an Access application is created initially, the features needed in the future cannot be anticipated, nor can the budget be justified. It's a case of database evolution, and now it's time to evolve from Access and the Jet database engine. You have many ways to migrate ...