Title of Course
... Null values are the “absence of information”. They are logical values and represent “not/available” …or… “not/applicable” status for a field If you accept the default setting for SQL nulls as generated by the Data Access wizard, EGL internally maintains a null indicator for each variable that has th ...
... Null values are the “absence of information”. They are logical values and represent “not/available” …or… “not/applicable” status for a field If you accept the default setting for SQL nulls as generated by the Data Access wizard, EGL internally maintains a null indicator for each variable that has th ...
PDF
... possible to provide realistic estimates on the costs of UDFs. A query executing on large tables and using costly UDFs will execute long enough that considerable fluctuations in resource availability will be observed while the query is running. As a consequence, the relative weights associated with d ...
... possible to provide realistic estimates on the costs of UDFs. A query executing on large tables and using costly UDFs will execute long enough that considerable fluctuations in resource availability will be observed while the query is running. As a consequence, the relative weights associated with d ...
Document
... product detail, the time of sale, the outlet in which the product was sold and the sales personnel, is modelled by a separate dimension table. In relational database terms the fact table contains all the necessary foreign key attributes referencing the primary keys of the constituent dimension tabl ...
... product detail, the time of sale, the outlet in which the product was sold and the sales personnel, is modelled by a separate dimension table. In relational database terms the fact table contains all the necessary foreign key attributes referencing the primary keys of the constituent dimension tabl ...
Database Tools Overview
... Programmatic control of the Microsoft Jet database engine is provided through Data Access Objects (DAO). DAO organizes tables, queries, fields, and so forth, into a hierarchy of objects and collections of objects. For instance, in a database there is a collection of tables. Each table is an object a ...
... Programmatic control of the Microsoft Jet database engine is provided through Data Access Objects (DAO). DAO organizes tables, queries, fields, and so forth, into a hierarchy of objects and collections of objects. For instance, in a database there is a collection of tables. Each table is an object a ...
Introduction to SQL
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
... some of their attributes null signifies an unknown value or that a value does not exist. The result of any arithmetic expression involving null is null ...
CIS Oracle Database 11g R2 Benchmark
... SB Products Provided As Is. CIS is providing the SB Products “as is” and “as available” without: (1) any representations, warranties, or covenants of any kind whatsoever (including the absence of any war ...
... SB Products Provided As Is. CIS is providing the SB Products “as is” and “as available” without: (1) any representations, warranties, or covenants of any kind whatsoever (including the absence of any war ...
An Online Travel Agency Using PHP
... FROM Destination WHERE destinationID = $dest"; $sql_result = @mysql_query($sql,$connection) or die("No trips to that destination."); $row = mysql_fetch_array($sql_result); $title = $row["destName"]; $image = $row["image"]; $altText = $row["imageText"]; $description = $row["description"]; ...
... FROM Destination WHERE destinationID = $dest"; $sql_result = @mysql_query($sql,$connection) or die("No trips to that destination."); $row = mysql_fetch_array($sql_result); $title = $row["destName"]; $image = $row["image"]; $altText = $row["imageText"]; $description = $row["description"]; ...
Improving high availability in WebSphere Commerce using DB2 HADR
... In summary, TSA is a product that provides high availability by automating resources, such as processes, applications, IP addresses, and others in Linux-based clusters. To automate an IT resource (for example, a DB2 database instance), you define the resource to TSA. Furthermore, these resources mus ...
... In summary, TSA is a product that provides high availability by automating resources, such as processes, applications, IP addresses, and others in Linux-based clusters. To automate an IT resource (for example, a DB2 database instance), you define the resource to TSA. Furthermore, these resources mus ...
Separation of Duties in SQL Server 2014
... A SQL Server role maps a set of principals to a set of permissions and is meant to make things easier to manage, just as Windows groups make the Windows operating system easier to manage. Roles are either built in to SQL Server (and cannot be removed) or are user-defined. Roles cannot be disabled be ...
... A SQL Server role maps a set of principals to a set of permissions and is meant to make things easier to manage, just as Windows groups make the Windows operating system easier to manage. Roles are either built in to SQL Server (and cannot be removed) or are user-defined. Roles cannot be disabled be ...
Temporal Integrity Constraints
... of time instants into months. It can be expressed in a two-sorted temporal logic extended with a built-in predicate month(t1 , t2 ) which is true if t1 and t2 belong to the same month: ¬∃x∃y1 ∃y2 ∃t1 ∃t2 (month(t1 , t2 ) ∧ Earns(x, y1 | t1 ) ∧ Earns(x, y2 | t2 ) ∧ y1 6= y2 ) . Arithmetic on the time ...
... of time instants into months. It can be expressed in a two-sorted temporal logic extended with a built-in predicate month(t1 , t2 ) which is true if t1 and t2 belong to the same month: ¬∃x∃y1 ∃y2 ∃t1 ∃t2 (month(t1 , t2 ) ∧ Earns(x, y1 | t1 ) ∧ Earns(x, y2 | t2 ) ∧ y1 6= y2 ) . Arithmetic on the time ...
Normalization-Anomalies
... doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the tab ...
... doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the tab ...
CmpE226-DB-L07n
... transactions, storing data, etc. – Implemented in all major RDBMSs – SQL does not handle all the practical details involved in using a RDB. Hence, every RDBMS has additional features (some of which may form part of an extension of SQL for that particular RDBMS). ...
... transactions, storing data, etc. – Implemented in all major RDBMSs – SQL does not handle all the practical details involved in using a RDB. Hence, every RDBMS has additional features (some of which may form part of an extension of SQL for that particular RDBMS). ...
Oracle Database 2 Day + Data Warehousing Guide
... delivered to U.S. Government customers are "commercial computer software" or "commercial technical data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to ...
... delivered to U.S. Government customers are "commercial computer software" or "commercial technical data" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, duplication, disclosure, modification, and adaptation shall be subject to ...
Corporate PPT Template
... • Online disk reconfigurations and automatic rebalancing • File System • Even data distribution with optimal performance • Automatic file management using Oracle Managed Files (OMF) • Cluster support with Oracle Clusterware ...
... • Online disk reconfigurations and automatic rebalancing • File System • Even data distribution with optimal performance • Automatic file management using Oracle Managed Files (OMF) • Cluster support with Oracle Clusterware ...
One-Copy Serializability with Snapshot Isolation under
... while providing global one-copy-serializability (1SR). To guarantee serializability, concurrency control algorithms typically require access to data read and written in update transactions. Accessing this data is especially difficult in a replicated database system since built-in facilities inside a ...
... while providing global one-copy-serializability (1SR). To guarantee serializability, concurrency control algorithms typically require access to data read and written in update transactions. Accessing this data is especially difficult in a replicated database system since built-in facilities inside a ...
Database Engines on Multicores, Why Parallelize When You Can
... a decades old design optimized for disk I/O bottlenecks and meant to run on single CPU computers. Concurrency is achieved through threads and/or processes with few of them actually running simultaneously. Queries are optimized and executed independently of each other with synchronization enforced th ...
... a decades old design optimized for disk I/O bottlenecks and meant to run on single CPU computers. Concurrency is achieved through threads and/or processes with few of them actually running simultaneously. Queries are optimized and executed independently of each other with synchronization enforced th ...
Zvi`s changes, if any, are marked in green, they are not copyrighted
... • Inability to store partial information: If the salary schedule is augmented by a new grade, G = D, with corresponding salary of S = 3, this fact cannot be stored in the relation, unless E has the value of null. (But it is quite clear that in this relation E is the only possibly primary key,so we c ...
... • Inability to store partial information: If the salary schedule is augmented by a new grade, G = D, with corresponding salary of S = 3, this fact cannot be stored in the relation, unless E has the value of null. (But it is quite clear that in this relation E is the only possibly primary key,so we c ...
WhatsUp Gold v16.1 Database Migration and Management Guide
... Step 4: Copy installation program and database backup files to new server .......................... 19 Step 5: Install WhatsUp Gold on new server......................................................................................... 19 Step 6: Restore backed up databases over new server's default ...
... Step 4: Copy installation program and database backup files to new server .......................... 19 Step 5: Install WhatsUp Gold on new server......................................................................................... 19 Step 6: Restore backed up databases over new server's default ...
Advanced Topics on SQL Injection Protection
... in a stored procedure, some database servers, such as Oracle[5] and MS-SQL[6], provide an extra layer of defence by executing the dynamic query under the caller’s permission (i.e. invoker’s right). That is, except for granting the user/role permission to access the stored procedure, we also have t ...
... in a stored procedure, some database servers, such as Oracle[5] and MS-SQL[6], provide an extra layer of defence by executing the dynamic query under the caller’s permission (i.e. invoker’s right). That is, except for granting the user/role permission to access the stored procedure, we also have t ...
mod-6
... Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
Oracle Database
Oracle Database (commonly referred to as Oracle RDBMS or simply as Oracle) is an object-relational database management system produced and marketed by Oracle Corporation.Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977. SDL developed the original version of the Oracle software. The name Oracle comes from the code-name of a CIA-funded project Ellison had worked on while previously employed by Ampex.