Chapter 7 Database Design Models— the UML Profile for Database Design
... catalogs,you may not have an employee who sold the product; the customer may have purchased it without employee assistance. Therefore it is not mandatory that a customer exist only when associated to an employee. The identifying relationship is created with a stereotype of <> on a compo ...
... catalogs,you may not have an employee who sold the product; the customer may have purchased it without employee assistance. Therefore it is not mandatory that a customer exist only when associated to an employee. The identifying relationship is created with a stereotype of <
Chapter 17: Parallel Databases
... P1 and P2 can work independently in parallel P3 has to wait for input from P1 and P2 – Can pipeline output of P1 and P2 to P3, combining independent parallelism and pipelined parallelism Does not provide a high degree of parallelism ...
... P1 and P2 can work independently in parallel P3 has to wait for input from P1 and P2 – Can pipeline output of P1 and P2 to P3, combining independent parallelism and pipelined parallelism Does not provide a high degree of parallelism ...
Proper Care and Feeding of your SQL MDB
... - Install SQL Server on a disk with sufficient available space – this is the default log location - SQL Server allows transaction log files to exist on multiple devices - this improves logging system performance by allowing it to write to multiple disks - MDB Transaction Log automatically grows by 1 ...
... - Install SQL Server on a disk with sufficient available space – this is the default log location - SQL Server allows transaction log files to exist on multiple devices - this improves logging system performance by allowing it to write to multiple disks - MDB Transaction Log automatically grows by 1 ...
Dynamic Test Input Generation for Database
... have to execute the code for values of the input set to 1 (i.e., the user is preferred) or not 1 (the user is not preferred), and in database contexts that (1) do not contain books with inventory more than inv or books on CS, (2) contain books with more than inv copies and on CS, (3) contain books o ...
... have to execute the code for values of the input set to 1 (i.e., the user is preferred) or not 1 (the user is not preferred), and in database contexts that (1) do not contain books with inventory more than inv or books on CS, (2) contain books with more than inv copies and on CS, (3) contain books o ...
R - VUB STAR lab
... R. Meersman --Adapted from: Database System Concepts --Silberschatz, Korth, Sudarshan ...
... R. Meersman --Adapted from: Database System Concepts --Silberschatz, Korth, Sudarshan ...
IT 244 Database Management System - TIHE
... dependency on attribute A (i.e., A → B) if, for each value of attribute A, there is exactly one value of attribute B. If value of A is repeating in tuples then value of B will also repeat. In our example, Employee Address has a functional dependency on Employee ID, because a particular Employee ID v ...
... dependency on attribute A (i.e., A → B) if, for each value of attribute A, there is exactly one value of attribute B. If value of A is repeating in tuples then value of B will also repeat. In our example, Employee Address has a functional dependency on Employee ID, because a particular Employee ID v ...
OO Databases & XML
... A set of messages to which the object responds; each message may have zero, one, or more parameters. A set of methods, each of which is a body of code to implement a message; a method returns a value as the response to the message The physical representation of data is visible only to the ...
... A set of messages to which the object responds; each message may have zero, one, or more parameters. A set of methods, each of which is a body of code to implement a message; a method returns a value as the response to the message The physical representation of data is visible only to the ...
Folie 1
... • e.g. in Phase II „Land Use“ with subprojects L1, L2 etc. • e.g. in Phase III „Analysis of Long-Term Environemental Change“ with the subprojects E1, E2 etc. • with their own processings, models, input and output data (- formats) data flows and -storages • with specific integrations and dependencies ...
... • e.g. in Phase II „Land Use“ with subprojects L1, L2 etc. • e.g. in Phase III „Analysis of Long-Term Environemental Change“ with the subprojects E1, E2 etc. • with their own processings, models, input and output data (- formats) data flows and -storages • with specific integrations and dependencies ...
Distributed Architecture of Oracle Database In
... reconsider scale-up versus scale-out [16]. They provide evidence that the majority of analytics workloads do not process huge data sets at a given time. For example, analytics production clusters at Microsoft and Yahoo have median job input sizes less than 14 GB [17], and 90% of jobs on a Facebook c ...
... reconsider scale-up versus scale-out [16]. They provide evidence that the majority of analytics workloads do not process huge data sets at a given time. For example, analytics production clusters at Microsoft and Yahoo have median job input sizes less than 14 GB [17], and 90% of jobs on a Facebook c ...
Data Archive Project Timo-Pekka Kemppainen
... In relational databases, all data is stored in data tables. A data table can be described as rows and columns. Each column holds a single typed value and each row holds data for a single entry in a table. To have a relational database, two tables are minimum requirement. For example if a table is cr ...
... In relational databases, all data is stored in data tables. A data table can be described as rows and columns. Each column holds a single typed value and each row holds data for a single entry in a table. To have a relational database, two tables are minimum requirement. For example if a table is cr ...
FederatedDataWarehouse
... CASE Support for the Development of Federated.. - Thiran, Chougrani.. (2000) Introduction Federated Information Systems (FIS) [1] provide transparent access to heterogeneous data sources. The development of FIS involves yielding local schemas, integrating them into one or more schemas, controlling c ...
... CASE Support for the Development of Federated.. - Thiran, Chougrani.. (2000) Introduction Federated Information Systems (FIS) [1] provide transparent access to heterogeneous data sources. The development of FIS involves yielding local schemas, integrating them into one or more schemas, controlling c ...
original - Kansas State University
... E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
... E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
Document
... • Proactive automatic database health monitoring • Increased application availability through efficient SQL plan stability and optimizer plan management • Real time testing with production data – reduced cost as well as risk of deploying change • Enhanced online application maintenance • Flashback T ...
... • Proactive automatic database health monitoring • Increased application availability through efficient SQL plan stability and optimizer plan management • Real time testing with production data – reduced cost as well as risk of deploying change • Enhanced online application maintenance • Flashback T ...
Databases
... – Often the same information was stored in multiple master files. – Made it more difficult to effectively integrate data and obtain an organization-wide view of the data. – Also, the same information may not have been consistent between files. • If a student changed his phone number, it may have bee ...
... – Often the same information was stored in multiple master files. – Made it more difficult to effectively integrate data and obtain an organization-wide view of the data. – Also, the same information may not have been consistent between files. • If a student changed his phone number, it may have bee ...
Using MIS 6e Chapter 5
... Q2: What is a database? Q3: What are the components of a database application system? Q4: How do database applications make databases more useful? Q5: How are data models used for database development? Q6: How is a data model transformed into a database design? Q7: What is the users’ role in the dev ...
... Q2: What is a database? Q3: What are the components of a database application system? Q4: How do database applications make databases more useful? Q5: How are data models used for database development? Q6: How is a data model transformed into a database design? Q7: What is the users’ role in the dev ...
Storing data in the public cloud requires unique considerations
... time-consuming database administration tasks. Because of automated database backups and snapshots, the Amazon RDS is highly reliable: a database instance can be recovered for any point in time or recovery point that lies within the agreed retention period. Amazon CloudWatch allows users to monitor t ...
... time-consuming database administration tasks. Because of automated database backups and snapshots, the Amazon RDS is highly reliable: a database instance can be recovered for any point in time or recovery point that lies within the agreed retention period. Amazon CloudWatch allows users to monitor t ...
Series 075 Computer Science Dept.
... Restrictions: There are no restrictions on access. Processing: Dennis S. Taylor, University Archivist, April 2002. Administrative history note: ...
... Restrictions: There are no restrictions on access. Processing: Dennis S. Taylor, University Archivist, April 2002. Administrative history note: ...
Best Practices for Upgrading to Oracle Database 11g
... preparation is the most time consuming part of the upgrade, not the upgrade itself. This article talks about direct upgrades to Oracle Database 11g Release 2 using either the Database Upgrade Assistant (DBUA) or the Manual Upgrade (catupgrd.sql or command line script). These methods are the most str ...
... preparation is the most time consuming part of the upgrade, not the upgrade itself. This article talks about direct upgrades to Oracle Database 11g Release 2 using either the Database Upgrade Assistant (DBUA) or the Manual Upgrade (catupgrd.sql or command line script). These methods are the most str ...
MOSS 2007 and SQL 2008 - Better Together
... Low impact (~3-5% CPU) and can be much lower if most of the data is stored in memory ...
... Low impact (~3-5% CPU) and can be much lower if most of the data is stored in memory ...
Chapter 3 - Personal Web Pages
... IC: condition that must be true for any instance of the database; e.g., domain constraints. – ICs are specified when schema is defined. – ICs are checked when relations are modified. ...
... IC: condition that must be true for any instance of the database; e.g., domain constraints. – ICs are specified when schema is defined. – ICs are checked when relations are modified. ...
Database_performance
... • Five of this table's rows would fit in a 4K data page (or block). Now what happens if the data is compressed? Assume that the compression routine achieves 30% compression on average (a very conservative estimate). In that case, the 800-byte row will consume only 560 bytes (800 x 0.30 = 560). After ...
... • Five of this table's rows would fit in a 4K data page (or block). Now what happens if the data is compressed? Assume that the compression routine achieves 30% compression on average (a very conservative estimate). In that case, the 800-byte row will consume only 560 bytes (800 x 0.30 = 560). After ...
Activate Physical Standby: Controlled failover
... an active standby database for the production database. This environment will provide protection against planned or unplanned downtime as well as against data loss in case the primary database environment becomes unavailable. This is extremely important in a 24x7 production environment, which we hig ...
... an active standby database for the production database. This environment will provide protection against planned or unplanned downtime as well as against data loss in case the primary database environment becomes unavailable. This is extremely important in a 24x7 production environment, which we hig ...
Slide 1
... What is PDO? • PDO is a PHP extension to formalise PHP's database connections by creating a uniform interface. This allows developers to create code which is portable across many databases and platforms. ...
... What is PDO? • PDO is a PHP extension to formalise PHP's database connections by creating a uniform interface. This allows developers to create code which is portable across many databases and platforms. ...