ISYS 512 Business Application Design and Development with.Net David Chao

Business Applications 1. Database-centric applications –Personal: desktop, PDA/Smart Phone –Workgroup/Departmental databases –Enterprise database Enterprise Resource Planning (ERP) –Integrate all enterprise functions (manufacturing, finance, sales, marketing, inventory, accounting, human resources) –TPS, DSS, ESS

Business Applications 2. Client/Server structure: a. Presentation – user interface Menus, forms, reports, etc b. Processing logic Business rules c. Database Client Database Server SQL queries 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 Two-Tier Client-based presentation. Processing logic is buried either inside the user interface on the client or within the database on the server, or both. Three-Tier –Processing logic is separated from the interface and database. N-Tier: –Using services

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 Common Language Runtime Base Class Library Data and XML ASP.Net Windows Forms Common Language Specification VB.NetC#/J#C++

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

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: Introduction to XML

Required Software Visual Studio 2008 –It has a web server to test web projects. MS SQL Server 2008 Express Windows XP Professional with Service Pack 2 Optional: –Internet Information Services: Control Panel Add/Remove programs/Windows Components/IIS

VS 2008 Professional Copy VS 2008 Professional at the BUS Computer Lab and install it. Upgrade it to SP1: –Download and install VS 2008 SP 1 –

Download and Install MS SQL Server Express 2008 Download page: – 508b-45c8-9fd3-118edd8e6fff&DisplayLang=en#Overviewhttp:// 508b-45c8-9fd3-118edd8e6fff&DisplayLang=en#Overview SQL Server Book Online: – SQL Server database file extension: mdf Default database folder: Example: testSQL08.mdf –C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\testSQL08.mdf

To Start/End SQL Server SQL Server Express is a “service” To start SQL Server service: –Control Panel/Administrative Tools/Services/SQL Server Express