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ISYS 512 Business Application Design and Development with .Net. David Chao. Business Applications. 1. Database-centric applications Transaction Processing Systems, TPS Transaction support database Internal, detailed and historical data Decision Support Systems, DSS
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ISYS 512Business Application Design and Developmentwith .Net David Chao
Business Applications • 1. Database-centric applications • Transaction Processing Systems, TPS • Transaction support database • Internal, detailed and historical data • Decision Support Systems, DSS • Decision support database • Data warehouse
Business Applications • 2. Client/Server structure: a. Presentation – user interface • Menus, forms, reports, etc b. Processing logic • Business rules c. Database SQL queries Client Database Server Results
Business Applications • 3. Multiple platforms • Windows-based • Web-based • Mobile-based
Business Applications • 4. Component and service oriented architecture: • Component-based software development focuses on building large software systems by integrating previously-existing software components. • A service-oriented architecture is an information technology approach or strategy in which applications make use of services available in a network such as the World Wide Web.
N-Tier Client/Server Structure • Three-Tier • Client-based presentation • Processing logic • Database. • N-Tier: • Using services • Fat client/Thin client
The Web as a Database Application Platform • Three-tier architecture • Browser - interface • Server • web server, database server • processing logic • Advantages: • Cross-platform support • Graphical user interface
Business Applications • 5. Object-oriented, GUI, event-driven
Course Objective • Develop database-centric, multiple platforms, component and service oriented business applications with .Net.
.Net Architecture VB.Net C#/J# C++ Common Language Specification ASP.Net Windows Forms Data and XML Base Class Library Common Language Runtime
Common Language Runtime: • Manages execution of compiled .NET program. • Provides .Net basic services, such as memory management, garbage collection, etc. • Base Class library: define all the basic data types such as system.object, numeric, date, etc. • Data and XML: Classes work with database (ADO.NET) and XML document. • ASP.Net and Forms: Classes that generate user interface. • CLS: CLS dictates the minimum group of features that a .Net language must have.
Execution of a .Net Program • Language must compliance with Common Language Specification, CLS. • Compile the language into Microsoft Intermediate Language (MSIL) code. • The MSIL code is then executed in the Common Language Runtime (CLR), which conceptually is same as the Java Virtual Machine, where it is translated into machine code by a compiler. • It is a server-side technology.
.Net Advantages • It is independence from a specific language. • Developers can create a .Net application in any .Net compatible language. • .Net moves most of the functionality from the language to the .Net Framework. All .Net languages can use these classes. • It can exist on multiple platforms: • Windows, Web, Mobile devices • Facilitate application development • Tools, wizards • Universal data access: Data can be accessed by any Internet-connected device. • ADO.Net • Implement latest development technologies. • Ex. AJAX, web service
Programming in the .Net Framework • Programming in the .Net Framework means making use of the classes, objects, and members exposed by the Framework, building your own classes on top of these and manipulating the resulting objects using a .Net language.
Hands On Techniques • Visual Basic .NET • Interface and event-driven programming • Class and component programming • Database programming • Embedded SQL • ADO.NET programming model • LINQ • Web Techniques: • Server side scripting: ASP.NET • ASP.Net and ADO.Net • Web services:
Required Software • Visual Studio 2010 • It has a web server to test web projects. • Access/MS SQL Server 2008 Express (installed with VS 2010) • Operating Systems: • Windows XP (x86) with Service Pack 3 - all editions except Starter Edition • Windows Vista (x86 & x64) with Service Pack 2 - all editions except Starter Edition • Windows 7 (x86 & x64)
To Start/End SQL Server • SQL Server Express is a “service” • To start SQL Server service: • Control Panel/Administrative Tools/Services/SQL Server Express