On-Line Video Store Vitaly Panor Tal Joffe September, 2009 Project Supervisor: Victor Kulikov VTVS

 Project Goals  Introduction  Working environment  Design Approach  Data access Layer  Business Logic Layer  Presentation Layer  Summary Outline

Our project goals were:  Creating an easy to use online video store.  Learning how to design and create a complete web site from bottom to top  Getting familiar with ASP.NET environment, C# and SQL code, web service, paging and working with a relational database. Project Goals

VTVS - Vitaly and Tal’s Video Store - is an online streaming video store, where users are able to purchase movies and watch them on-line. Introduction Our site, unlike the existing similar sites, focuses on the inexperienced web surfer. We provide a very simple easy-to-use interface without any distractions.

Introduction (cont.) Various features were implemented, such as providing detailed information for each movie, searching a movie by different parameters, uploading and editing a movie, registering users and more.

Application Tier:.Net Framework 3.5 (C#) ASP.NET 3.5 Workingenvironment Working environment Database Tier: Microsoft Enterprise SQL server Development environment: Microsoft Visual Studio 2008

Design Approach Three-Tiers Architecture ScalabilityScalability Improved SecurityImproved Security RobustnessRobustness

Data Access Layer (DAL) in this layer information is stored and retrieved from the database Database: we used a local SQL database created in the visual studio environment DAL we implemented the DAL as a Web Service that consists of Strongly Typed Dataset and classes that uses it.

Database

DAL – DataSet

DAL – Web Service We implemented the DAL in our project as a Web Service. We decided to use it since it meets two important demands in a simple way. The demands are that: It implements the singleton pattern It allows the DAL to be completely separated from the rest of the implementation

DAL – Web Service (cont.) The alternative of using the Web Service was creating our own singleton class that will implement the same methods.

DAL – Web Service (cont.) In the Web Service Implementation we created several classes on top of the main class – Service – that use the DataSet to access the database each Class access the appropriate table adaptor methods.

DAL – Web Service (cont.)

Business Logic Layer (BLL) this layer contains the logic of the web application, i.e. command processing, logical decisions and calculation. the BLL also moves data between the DAL and the Presentation Layer

Presentation Layer this layer represents the user interface (UI). Meaning it translates tasks and results to something the user can understand Site map MainForm LoginFormNewUserFormDisplayMovieFormSearchResultsForm AdminViewFormBuyerViewForm PurchaseCreditFormEditMovieForm ModeratorViewForm PlayMovieForm About ContactUs UploaderViewForm

What we had learned In our project we had learned how to: Design and create a relational database. Write SQL queries. Write C# code. Use ADO.NET objects to access the data in the database. Create an ASP.NET Web Service and consume it. Create an ASP.NET web site Create and Design web forms and master page using HTML and CSS code along with the visual studio designer. Design a web site project using the 3-Tiers approach and implementing it using all of the above.

What we would have done differently Improving the code design - abstraction, encapsulation, modularity, design patterns…. Improving the UI - countless researches have been made on the subject. We have only covered a small fraction. Efficiency – there is always room for improvements. Both DAL and BLL can be made more efficient.

Thank You!