National Academy for Software Development
... • What happens at failure? • If transaction had not committed at failure time, recovery manager has to undo (rollback) any effects of that transaction for atomicity • If failure occurs between commit and database buffers being flushed to secondary storage, recovery manager has to redo (rollforward) ...
... • What happens at failure? • If transaction had not committed at failure time, recovery manager has to undo (rollback) any effects of that transaction for atomicity • If failure occurs between commit and database buffers being flushed to secondary storage, recovery manager has to redo (rollforward) ...
CGI
... • A plain HTML document is static • A CGI program is executed in real-time, so that it can output dynamic information. • CGI (Common Gateway Interface) is the language or protocol that the browser uses to communicate the data from the form to the web server. • A standard for interfacing external app ...
... • A plain HTML document is static • A CGI program is executed in real-time, so that it can output dynamic information. • CGI (Common Gateway Interface) is the language or protocol that the browser uses to communicate the data from the form to the web server. • A standard for interfacing external app ...
Web Programming Services
... use of software from various vendors. It is suggested that the instructor select and focus instruction on a single vendor’s RDBMS software together with a single middleware computer language (e.g. Oracle/Java, MS SQL Server/ASP.NET, MySQL/PHP or other combination). In some cases it may be beneficial ...
... use of software from various vendors. It is suggested that the instructor select and focus instruction on a single vendor’s RDBMS software together with a single middleware computer language (e.g. Oracle/Java, MS SQL Server/ASP.NET, MySQL/PHP or other combination). In some cases it may be beneficial ...
Software University
... Local cache can be accessed without sending a query var localPosts = context.Posts.Local; localPosts.Add(new Post { Name = "What's New in EF" }); localPosts.Remove(context.Posts.Find(1)); ...
... Local cache can be accessed without sending a query var localPosts = context.Posts.Local; localPosts.Add(new Post { Name = "What's New in EF" }); localPosts.Remove(context.Posts.Find(1)); ...
Using Views with DB2, MS Access, and SQL Server
... Beginning in Version 7, a Proc SQL view can be used to update the underlying database data. To update, the view must be based only on one database table or a database view with no calculated fields based on one table. You can use the ORDER BY clause in your CREATE VIEW statement, however it may be m ...
... Beginning in Version 7, a Proc SQL view can be used to update the underlying database data. To update, the view must be based only on one database table or a database view with no calculated fields based on one table. You can use the ORDER BY clause in your CREATE VIEW statement, however it may be m ...
Chapter 10 Databases
... (A) A user tries to enter a record in the table Countries that doesn’t contain data in the primary key. (B) A user tries to add a record to a table that is related to the Countries table, and that record contains a foreign key value that does NOT correspond to a primary key value in the Countries ta ...
... (A) A user tries to enter a record in the table Countries that doesn’t contain data in the primary key. (B) A user tries to add a record to a table that is related to the Countries table, and that record contains a foreign key value that does NOT correspond to a primary key value in the Countries ta ...
Database design Database design Database design Database
... Logical design defines the database for some type of database management system, for example, for relational dbms. It considers how the data are represented using the structures offered by dbms: ...
... Logical design defines the database for some type of database management system, for example, for relational dbms. It considers how the data are represented using the structures offered by dbms: ...
IJCEA_Paper
... based on inserting binary image watermarks in non-numeric mutli-word attributes of selected database tuples. Results: The algorithm is robust as it resists attempts to remove or degrade the embedded watermark and it is blind as it does not require the original database in order to extract the embedd ...
... based on inserting binary image watermarks in non-numeric mutli-word attributes of selected database tuples. Results: The algorithm is robust as it resists attempts to remove or degrade the embedded watermark and it is blind as it does not require the original database in order to extract the embedd ...
Installation work stage, interfaces
... • If the customer wants to use a traditional telephone with the VoIP connection, an adapter can be purchased. • The adapter must be pre-configured so that it can retreive needed information from Partels web-server when it is first connected. • The VoIP delivery process does not require an installati ...
... • If the customer wants to use a traditional telephone with the VoIP connection, an adapter can be purchased. • The adapter must be pre-configured so that it can retreive needed information from Partels web-server when it is first connected. • The VoIP delivery process does not require an installati ...
Scott Martens on databases
... – Because if we get n matches in one table in O(log n) 5me, we might have to look each one up in another table. – Clever programmers keep worst case performance under O(n) in almost all cas ...
... – Because if we get n matches in one table in O(log n) 5me, we might have to look each one up in another table. – Clever programmers keep worst case performance under O(n) in almost all cas ...
Chapter 18 of Database Design, Application Development
... A relational DBMS extended with an object query processor for user-defined data types. Complex data is added as a user-defined type. User-defined functions can be defined and then used in SQL statements. SQL:1999 provides the standard for object relational DBMSs. Provide good integration of ...
... A relational DBMS extended with an object query processor for user-defined data types. Complex data is added as a user-defined type. User-defined functions can be defined and then used in SQL statements. SQL:1999 provides the standard for object relational DBMSs. Provide good integration of ...
Lecture 6
... Data Model • Structures and access techniques provided by a particular database management system (DBMS) are called its data model • DBMS became popular from 1970 to 1980 • Each model had its advantages and its disadvantages • In many ways the relational data model represented an attempt to simplif ...
... Data Model • Structures and access techniques provided by a particular database management system (DBMS) are called its data model • DBMS became popular from 1970 to 1980 • Each model had its advantages and its disadvantages • In many ways the relational data model represented an attempt to simplif ...
E-Commerce 3
... 1. Retrieve all rows from the Categories table to fill the drop-down list on the Default.aspx page so the user can select a product. 2. Retrieve all rows from the FeaturedProducts table to display at the top of the Default.aspx page. Note that some data is also required from the Products table, so t ...
... 1. Retrieve all rows from the Categories table to fill the drop-down list on the Default.aspx page so the user can select a product. 2. Retrieve all rows from the FeaturedProducts table to display at the top of the Default.aspx page. Note that some data is also required from the Products table, so t ...
0.4 - Software Engineering | RIT - Rochester Institute of Technology
... This document provides a comprehensive architectural overview of the application, and uses several different architectural views to portray varying aspects of the system. It is intended to capture and convey the significant architectural decisions that have been made for the system. This document ma ...
... This document provides a comprehensive architectural overview of the application, and uses several different architectural views to portray varying aspects of the system. It is intended to capture and convey the significant architectural decisions that have been made for the system. This document ma ...
PPT Template
... © 2012 Invensys. All Rights Reserved. The names, logos, and taglines identifying the products and services of Invensys are proprietary marks of Invensys or its subsidiaries. All third party trademarks and service marks are the proprietary marks of their respective owners. ...
... © 2012 Invensys. All Rights Reserved. The names, logos, and taglines identifying the products and services of Invensys are proprietary marks of Invensys or its subsidiaries. All third party trademarks and service marks are the proprietary marks of their respective owners. ...
White Paper
... inflexible, these systems did the job as long as the applications remained static in their requirements. But dynamic industries quickly outpace static applications, and the cost to develop, test, and maintain specialized infrastructure software is rarely justified when commercial alternatives exist. ...
... inflexible, these systems did the job as long as the applications remained static in their requirements. But dynamic industries quickly outpace static applications, and the cost to develop, test, and maintain specialized infrastructure software is rarely justified when commercial alternatives exist. ...
Surrogate Key
... of access depending on their needs. • A user should have access to the data and resources they need to do their work, but no more. ...
... of access depending on their needs. • A user should have access to the data and resources they need to do their work, but no more. ...
Slides for Ch-4
... For variable-length types like character arrays, – The maximum length of the variable – Location to store actual length when a tuple is fetched. ...
... For variable-length types like character arrays, – The maximum length of the variable – Location to store actual length when a tuple is fetched. ...
Lecture 7 - Pravin Shetty > Resume
... Objectives of this Lecture • This lecture will be focussed mostly on database as a means of storing and retrieving data. • The term ‘database’ is always associated with the term ‘database management system’ (DBMS) which indicates that not only is data stored but it is controlled and managed by soft ...
... Objectives of this Lecture • This lecture will be focussed mostly on database as a means of storing and retrieving data. • The term ‘database’ is always associated with the term ‘database management system’ (DBMS) which indicates that not only is data stored but it is controlled and managed by soft ...
Cloud-ready enterprise database
... physical data storage when needed and add additional database instances to service more active users and connections. This keeps the business growing fast without a loss in service levels. Elasticity addresses the ability to scale compute power, storage and database instances up or down as performan ...
... physical data storage when needed and add additional database instances to service more active users and connections. This keeps the business growing fast without a loss in service levels. Elasticity addresses the ability to scale compute power, storage and database instances up or down as performan ...
PPT
... Relations are Unordered Order of tuples is irrelevant (tuples may be stored in an arbitrary order) Relations are basically set! Example: the instructor relation with unordered tuples ...
... Relations are Unordered Order of tuples is irrelevant (tuples may be stored in an arbitrary order) Relations are basically set! Example: the instructor relation with unordered tuples ...
SQLrand: Preventing SQL Injection Attacks
... The prevalence of buffer overflow attacks [3, 29] as an intrusion mechanism has resulted in considerable research focused on the problem of preventing [14, 11], detecting [35, 23, 25], or containing [33, 31, 21, 12] such attacks. Considerably less attention has been paid to a related problem, SQL in ...
... The prevalence of buffer overflow attacks [3, 29] as an intrusion mechanism has resulted in considerable research focused on the problem of preventing [14, 11], detecting [35, 23, 25], or containing [33, 31, 21, 12] such attacks. Considerably less attention has been paid to a related problem, SQL in ...
Microsoft Jet Database Engine
The Microsoft Jet Database Engine is a database engine on which several Microsoft products have been built. A database engine is the underlying component of a database, a collection of information stored on a computer in a systematic way. The first version of Jet was developed in 1992, consisting of three modules which could be used to manipulate a database.Database connect for MicrosoftJET stands for Joint Engine Technology, sometimes being referred to as Microsoft JET Engine or simply Jet. Microsoft Access and Visual Basic use or have used Jet as their underlying database engine. It has since been superseded for general use, however, first by Microsoft Desktop Engine (MSDE), then later by SQL Server Express. For larger database needs, Jet databases can be upgraded (or, in Microsoft parlance, ""up-sized"") to Microsoft's flagship database product, SQL Server.However, this does not mean that a MS Jet (Red) database cannot match MS SQL Server in storage capacity. A 5 billion record MS Jet (Red) database with compression and encryption turned on requires about 1 terabyte of disk storage space, comprising hundreds of (*.mdb) files, each acting as partial table, and not as a database in itself.Over the years, Jet has become almost synonymous with Microsoft Access, to the extent that many people refer to a Jet database as an ""Access database"".