Electronic Commerce System Case Study Chapter 22
... Because this is a data-intensive application, the emphasis is on the entity classes, many of which represent the data stored in the legacy databases. The database wrapper objects will map between the conceptual objects and the actual databases. Because each customer and supplier organization is liab ...
... Because this is a data-intensive application, the emphasis is on the entity classes, many of which represent the data stored in the legacy databases. The database wrapper objects will map between the conceptual objects and the actual databases. Because each customer and supplier organization is liab ...
12 Rules for a Cloud Data Management System (CDMS)
... A CDMS must integrate and run in a cloud environment, and be designed to support cloud-scale performance requirements while being resilient against the inherent ...
... A CDMS must integrate and run in a cloud environment, and be designed to support cloud-scale performance requirements while being resilient against the inherent ...
PPT
... The major issue associated with interfacing with a RDBMS is whether or not to separate the application-specific behavior from the databasespecific behavior Suppose our system has a Customer class which we have decided should be persistent Should the Customer class contain the details of the OO-toR ...
... The major issue associated with interfacing with a RDBMS is whether or not to separate the application-specific behavior from the databasespecific behavior Suppose our system has a Customer class which we have decided should be persistent Should the Customer class contain the details of the OO-toR ...
directory service
... • Metadata is information about data. For example: A user account is data. Metadata specifies what information is included in every user account object. ...
... • Metadata is information about data. For example: A user account is data. Metadata specifies what information is included in every user account object. ...
Microsoft SQL Server Native High Availability with XtremIO
... While in the past there may have been concerns over hosting active/passive clusters volumes (or primary/secondary in the case of AAG) on the same underlying disk structure, XtremIO Data Protection (XDP) allows the user to have confidence in this choice. XDP is the world’s first flash-native data pro ...
... While in the past there may have been concerns over hosting active/passive clusters volumes (or primary/secondary in the case of AAG) on the same underlying disk structure, XtremIO Data Protection (XDP) allows the user to have confidence in this choice. XDP is the world’s first flash-native data pro ...
Physics Database Service Status
... Security has many layers: – Oracle’s security checklist – Scan for weak or default passwords – Check for published info on the web also by other sites • ‘Social engineering’ is a threat for complex environments ...
... Security has many layers: – Oracle’s security checklist – Scan for weak or default passwords – Check for published info on the web also by other sites • ‘Social engineering’ is a threat for complex environments ...
Prodacapo Installation Instructions
... The setup wizard will try to shut down any server processes that are running on the system before upgrading Prodacapo. It is still a good idea to manually check what server processes that are running before upgrading. This is because a running server process may indicate that one or more clients are ...
... The setup wizard will try to shut down any server processes that are running on the system before upgrading Prodacapo. It is still a good idea to manually check what server processes that are running before upgrading. This is because a running server process may indicate that one or more clients are ...
ExamMartin
... Task description – Everybody knows that washing black and white together is a bad idea, but there are a lot more criteria to consider, to prepare a wash • Appropriate colors for joint was • Washing conditions –e.g. temperature, centrifugation, spinning speed, drying – The appropriate amount of laund ...
... Task description – Everybody knows that washing black and white together is a bad idea, but there are a lot more criteria to consider, to prepare a wash • Appropriate colors for joint was • Washing conditions –e.g. temperature, centrifugation, spinning speed, drying – The appropriate amount of laund ...
pptx
... • identifies one-to-one alignment between attributes by analyzing the duplicates in data instances of the relational schemas • looks for similar rows or tuples • 6.2.11 Wang and colleagues • one-to-one alignments among the web databases • presents a combined schema model • Global-interface, global-r ...
... • identifies one-to-one alignment between attributes by analyzing the duplicates in data instances of the relational schemas • looks for similar rows or tuples • 6.2.11 Wang and colleagues • one-to-one alignments among the web databases • presents a combined schema model • Global-interface, global-r ...
0 - SoberIT
... The progress of the iterations are too rapid Effort: There might be too little time to implement a critical and specific part of the project deliverables. Contolling actions:Everyone has a named backup person. Communication his /hers schedule problems and sharing the work early enough.Sharing the wo ...
... The progress of the iterations are too rapid Effort: There might be too little time to implement a critical and specific part of the project deliverables. Contolling actions:Everyone has a named backup person. Communication his /hers schedule problems and sharing the work early enough.Sharing the wo ...
Reengineering of Database Applications to EJB based Architecture
... programming and the other for data management. In many cases these two worlds cohabitate peacefully, not interfering with each other. Unfortunately, many large applications, especially multi-tier e-commerce ones, need to use objects as the programming interface and use relations to manage the data. ...
... programming and the other for data management. In many cases these two worlds cohabitate peacefully, not interfering with each other. Unfortunately, many large applications, especially multi-tier e-commerce ones, need to use objects as the programming interface and use relations to manage the data. ...
No Slide Title
... Information about an enterprise is broken up into parts, with each relation storing one part of the information E.g.: account: stores information about accounts depositor: stores information about which customer owns which account customer: stores information about customers Storing all information ...
... Information about an enterprise is broken up into parts, with each relation storing one part of the information E.g.: account: stores information about accounts depositor: stores information about which customer owns which account customer: stores information about customers Storing all information ...
Keyword Proximity Search on XML Graphs
... nodes of G that are mapped to tS. An edge (tS, tS’) is created in GTSS if the schema graph has nodes s ∈ S and s ‘∈ S’, that are connected directly through an edge (s,s’) or indirectly through a path of dummy schema nodes. ...
... nodes of G that are mapped to tS. An edge (tS, tS’) is created in GTSS if the schema graph has nodes s ∈ S and s ‘∈ S’, that are connected directly through an edge (s,s’) or indirectly through a path of dummy schema nodes. ...
Grant and Revoke
... Finally, create a set of security groups. Groups are used to limit data access to the owners of the data; they can also store hierarchical relationships. OLS allows to specify: •Group Number. A numeric value used to uniquely identify each security group. It’s helpful to create group numbers that rep ...
... Finally, create a set of security groups. Groups are used to limit data access to the owners of the data; they can also store hierarchical relationships. OLS allows to specify: •Group Number. A numeric value used to uniquely identify each security group. It’s helpful to create group numbers that rep ...
Document
... Information about an enterprise is broken up into parts, with each relation storing one part of the information E.g.: account: stores information about accounts depositor: stores information about which customer owns which account customer: stores information about customers Storing all information ...
... Information about an enterprise is broken up into parts, with each relation storing one part of the information E.g.: account: stores information about accounts depositor: stores information about which customer owns which account customer: stores information about customers Storing all information ...
Proceedings of the FREENIX Track: 2004 USENIX Annual Technical Conference USENIX Association
... Database scalability and high availability can be achieved in the current state-of-the-art, but only at very high expense. Existing solutions require large SMP machines and high-end RDBMS (Relational Database Management Systems). The cost of these solutions, both in terms of hardware prices and soft ...
... Database scalability and high availability can be achieved in the current state-of-the-art, but only at very high expense. Existing solutions require large SMP machines and high-end RDBMS (Relational Database Management Systems). The cost of these solutions, both in terms of hardware prices and soft ...
The SQL Query Language
... If UNIQUE is used, and * is replaced by E.name, finds acct no.s whose owners own no more than one acct with a balance over 1000. (UNIQUE checks for duplicate tuples; * denotes all attributes. Why do we have to replace * by E.name?) Illustrates why, in general, subquery must be re-computed for each B ...
... If UNIQUE is used, and * is replaced by E.name, finds acct no.s whose owners own no more than one acct with a balance over 1000. (UNIQUE checks for duplicate tuples; * denotes all attributes. Why do we have to replace * by E.name?) Illustrates why, in general, subquery must be re-computed for each B ...
The Twain Shall Meet: Facilitating Data Exchange between SAS and Matlab
... Connection between SAS and a MySQL database is established with a simple libname statement, setting up the database as an 'external' SAS library. To transfer a SAS dataset to a MySQL database (or vice versa), one can use PROC COPY, or open SAS Explorer window and drag-and-drop the icon associated wi ...
... Connection between SAS and a MySQL database is established with a simple libname statement, setting up the database as an 'external' SAS library. To transfer a SAS dataset to a MySQL database (or vice versa), one can use PROC COPY, or open SAS Explorer window and drag-and-drop the icon associated wi ...
Partition - yesterday, today, and tomorrow
... Virtual Columns - Example • Base table with all attributes ... • ... is extended with the virtual (derived) column • ... and the virtual column is used as partitioning key CREATE TABLE accounts (acc_no number(10) not null, acc_name varchar2(50) not null, ... acc_branch number(2) generated always as ...
... Virtual Columns - Example • Base table with all attributes ... • ... is extended with the virtual (derived) column • ... and the virtual column is used as partitioning key CREATE TABLE accounts (acc_no number(10) not null, acc_name varchar2(50) not null, ... acc_branch number(2) generated always as ...
CH 12 - Angelfire
... • Coordinates activities in submission order. When this coordination detects difficulties, the application program(s) must intervene. ...
... • Coordinates activities in submission order. When this coordination detects difficulties, the application program(s) must intervene. ...
cont`d - Department of Computer Science
... Relational databases scale vertically. Increase the database server’s capabilities in order to increase performance. ...
... Relational databases scale vertically. Increase the database server’s capabilities in order to increase performance. ...
Ontology Based Query Answering: The Story So Far
... the term query to refer to a query of any of the kinds defined above. Definition 3 (Query match, (certain) answers). Let I be an interpretation. A match for a query q(x) = ∃y.ϕ in I is a mapping π form the terms occurring in q to the domain ∆I of I such that π(a) = aI for every individual a occurrin ...
... the term query to refer to a query of any of the kinds defined above. Definition 3 (Query match, (certain) answers). Let I be an interpretation. A match for a query q(x) = ∃y.ϕ in I is a mapping π form the terms occurring in q to the domain ∆I of I such that π(a) = aI for every individual a occurrin ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.