Software practises

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  • Object Role Modeling (ORM) is a powerful method for designing and querying database models at the conceptual level, where the application is described in terms easily understood by non-technical users. In practice, ORM data models often capture more business rules, and are easier to validate and evolve than data models in other approaches.


  • 1. Software Practices -Stay Tuned………
  • 2. Agenda Software Life Cycle with cost Overview: eMenu System .NET 4.0 Technologies Patterns Azilen Technologies (P) Ltd
  • 3. Azilen Technologies (P) Ltd
  • 4. Innovation at FingersEMENU SYSTEM Azilen Technologies (P) Ltd
  • 5. Technology Overview .NET 3.5 Framework Business Layer ◦ BindingList(Of T) ◦ LINQ to Objects ◦ Validation Block (Ent Lib 5.0) Data Access Layer ◦ Data Access Application Block(Ent Lib 5.0) Azilen Technologies (P) Ltd
  • 6. Contd.. Presentation Layer: ◦ Windows Form ◦ Elegant Controls Azilen Technologies (P) Ltd
  • 7. Issues with existing system Exposed everything everywhere Redundancy of Code No modularization Azilen Technologies (P) Ltd
  • 8. Exposing everythingeverywhere Business Logic Layer:  Manager classes are accessible outside an assembly  Solution: Manager class should have an Internal Access modifier Azilen Technologies (P) Ltd
  • 9. Redundancy of code ◦ Splash Screen  Solution1: User Control  Property: Splash Image  Solution2:  Abstract Class SplashScreen  Splash Image  Sub StartSplash()  Sub CloseSplash()  Overridable Sub Initialize()  Derived Class:  1) BOSplashScreen  2) KMSplashScreen Azilen Technologies (P) Ltd
  • 10. Contd… ◦ Business Entity:  Have an identity and implements INotifyPropertyChanged events. ◦ Serialization ◦ R/W application settings or configuration file Azilen Technologies (P) Ltd
  • 11. .NET 4.0 TECHNOLOGIES Azilen Technologies (P) Ltd
  • 12. Technologies Managed Extensibility Framework(MEF) ◦ Helps to build plug-in based system Entity Framework(LINQ to Entities) ◦ Decrease the amount of code and maintenance required for data-oriented applications. Azilen Technologies (P) Ltd
  • 13. Parts have freedom to livePLUG-IN BASEDAPPLICATION Azilen Technologies (P) Ltd
  • 14. Designing Plug-in basedapplication Reflection Managed Add In Framework Managed Extensible Framework StructureMap Azilen Technologies (P) Ltd
  • 15. Managed ExtensibleFramework Solution for the runtime extensibility problem. Host application exposes itself and consumes external extensions. Azilen Technologies (P) Ltd
  • 16. How it works? Azilen Technologies (P) Ltd
  • 17. An ORM tool from MicrosoftENTITY FRAMEWORK Azilen Technologies (P) Ltd
  • 18. ORM(Object Relational Mapping) Designing and Querying database models at the conceptual level Tool: Simplify the creation of data access layers, automate data access Azilen Technologies (P) Ltd
  • 19. ORM with .NET nHibernate Linq To Sql(L2S) Linq To Entities(Entity Framework) Azilen Technologies (P) Ltd
  • 20. Azilen Technologies (P) Ltd
  • 21. Entity Framework Programming against a conceptual application model instead of programming directly against a relational storage schema. Mappings between the conceptual model and the storage-specific schema can change without changing the application code. Azilen Technologies (P) Ltd
  • 22. Take a new turn PATTERN”General reusable solution to a commonlyoccurring problem in software design” Azilen Technologies (P) Ltd
  • 23. We Know but We Don’t Know Singleton Pattern: Only one instance of class is made and used throughout application. Façade Pattern: A facade is an object that provides a simplified interface to a larger body of code. Azilen Technologies (P) Ltd
  • 24. Contd… Factory Pattern: ◦ Creating new instance without invoking constructor. ◦ Have you seen anywhere? Azilen Technologies (P) Ltd
  • 25. Patterns used with ORMs Repository Pattern: Mediates between the domain and data mapping layers using a collection-like interface for accessing domain objects. Unit Of Work Pattern: Maintains a list of objects affected by a business transaction and coordinates the writing out of changes and the resolution of concurrency problems. Azilen Technologies (P) Ltd
  • 26. Model-View-ViewModel (MVVM) Azilen Technologies (P) Ltd
  • 27. Azilen Technologies (P) Ltd
  • 28. Azilen Technologies (P) Ltd