Architecture :: Architecture And Design Patterns?

Mar 16, 2011

hat is the difference between Architecture and Design patterns ?

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Architecture :: Design Patterns Vs Architectural Patterns

Jan 10, 2011

1.what is the difference between design patterns vs architectural patterns ?

2. In which situations They are preffered?

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Architecture :: Design Patterns For Handling User Web Navigation And Flow?

Jan 20, 2011

Our site is expected to allow the user to do whatever they want from a number of different places. Except, that doing whatever they want really means firing off mini sequences of pages they must vist (or possibly abort from to go off to another task) before returning to their starting point. So, at any given time, the user has a list of pages they are allowed to go to, a list of pages they must go to in order to complete their task, and some end point they must eventually return to, all of which are constantly changing.

As an example, a user may choose to edit an order they placed, at which point they must step through a series of pages to edit the order. These pages to edit an order may be different based on the type of order they are editing, and they must return to whatever place they were at when they decided to start editing the order. They may also have certain options of other pages to visit during their order editing process.

I really need a good way to handle this for a large number of different scenarios, and allow it to be easily changed. Right now we are doing things like setting session variables when a user chooses an action and checking them within the page on button handlers to see what they are allowed to do or where they are allowed to go. I'd love to be able to abstract this out into something that can be easily examined in one place, or even data driven, and have some sort of navigation controller pointing them to the pages they can or must go.

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Architecture :: How To Design A Centralized Business Or Service Authentication Architecture

Sep 22, 2010

i want to create a centralised business or Service authendication architecture in .net. for example, we have a clients like c1, c2, c3, c4, ... etc. everybody logins seperatly as well as grouply. ie, if client "C1" logins [with login authentication] he can access c2 , c3, c4 also without login authendication. So its like a google. if we enters gmail account, we can access orkut, picasa like that.. i need the cetralised architecture.

And, client "c1" seperately asks seperately how will be the authendication architecture.

so give me the single solution for both these two scenarios. how will be the architecture for these two and how is the Data Base (Login) Structure.

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Architecture :: Entity Model Design Framework And N - Tier Architecture

Dec 25, 2010

recently i've studied on ADO.NET's Entity Model Framework and say 'wow' as ORM is one of the fevourite pattern i practice..but suddenly i've come to an ambiguous situation when i'm going to start. i usually follow the following 3-tier architecture..

1. UI Layer
2. BLL - business logic layer
3. DAL - Data Access Layer
a. DTO / DAO
b. Gateway (contains the sql query/stored procedure and connection with DB)

now when i'm going to use the Entity Model Design,where the DBML/ .edmx File should be placed? Because many a times i'm using the DBML file as DTO because of the mapped objects.. in the same time, sometimes DBML ( .edmx file in .NET 4.0) contains CRUD methods and stored procedured method as well as methods with different selection operations,- which should be in Gateway. so where the .edmx file should be placed !?!! IN DTO namespace !? or in Gateway namespace!

moreover sometimes there is no need for the BLL which breaks the rules of inter-layer-communication (UI > BLL > DAL.Gateway)! what makes me confuse is, what should be the ideal n-tier architecture when i'll use the ADO.NET Entity Model Design Framework

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Architecture :: Design Pattern And Tier Architecture

Jun 12, 2010

I am a newbie to asp.net and work in a firm where the projects are quite small.

I was told by my manager that in a few weeks or so we would be getting a bigger project and I need to be well versed with Design Patterns and N tier arcihtecture.

I would really appreciate if someone could provide me some links and also drop me a few sentences on how this things are useful?

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Architecture :: Createarchitecturedesign For WCF Service?

Aug 10, 2010

I am try to create architecture design for WCF service.

We have WCF service that we have to expose to third party so then can request with xml and get back xml response.

The wcf service should do the following:

- Accept the request call with xml

- Check xml against the schema

- Parse the xml

- Authenticate the incoming xml by username and password that will be in xml

- Send back the response

If anybody can let me know what kind of design I can use or is there any pattern available that I can take it and then extend it as per my requirement.

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Architecture :: .NET Web-Application Architectures / Patterns?

Jul 9, 2010

Does anybody knows good, short and slim tutorials (not here ), which describe actual/modern web-application architectures / patterns (especially for ASP.NET based (classic and MVC) applications (maybe also with embedded Silverlight components) ? How would you you design today an ASP.NET application which uses different datasources (databases, services,...) ? Background: I has been away a couple of years writing web applications, and I want to start now again. So at the moment I am a little bit unsure, how to take off and find the right starting point.

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Architecture :: EF4 With Repository And Unit Of Work Patterns?

Sep 26, 2010

I've been reading recently about EF4, and how to build an architecture for asp.net web forms application using it.

I explored using POCOs (self tracking entities), with WCF, but found out that my application will be deployed on a single box (i.e. one tier), so I started reading about logical separation of layers, and came up with the following solution:

DAL layer that contains EDMX model and EF APIs, and also generated context object.Entities DLL that holds all generated POCO entities using ADO.NET POCO entity generator. (for persistence ignorance, and decoupling entities from DAL).Business layer that contains a façade for each related group of business functions, the façade will be aware of and using DAL layer. And in each function, it will initiate context and uses different entities to carry out specific job (i.e. function).UI layer that only calls the business layer façade classes. With no awareness of DAL, but it will be aware of entities (i.e. using entities DLL), as the business layer will return results basically as entity collections.

I want to know what you think about this architecture.

I also read about an architecture that uses repository and unit of work patterns, but what I understand that context object is already implementing a UOF pattern, and also object sets are implementing repository pattern (correct me if I'm wrong), so the only advantage of using additional abstraction over them is to make the business layer communicates to my classes, not EF classes, and this is good only if the DAL strategy might change (i.e. by using another tool other than EF, which is not my plan).

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Architecture :: Interaction Between UnitOfWork And Repository Patterns?

May 31, 2010

I read some article about unitOfwork and repository but i'm still confused about how they interact, and how to use them in the right way.

I'm using an addressbook project to practise on patterns (even if , likely, patterns are not usefull) without any ORM framework for persistence.

My domain objects are (at now) : AddressBook (acts as an application controller), Contact (contains information about each contact in the address book), ContactGroup (mantain collections of contact).

Should i have to use distinct repository object for contact ad contactgroup?

I thought to use a UnitOfWork for the operation about the adding/removing contact to group : the user can add existing contact to a group, create a new contact while adding it to the group or remove contact from group.

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Architecture :: Factory Patterns Implemented In .Net Framework?

May 17, 2010

I am having troubles understanding the purposes of using Factory pattern, I understand Factory pattern uses Factory class that has methods to return concrete objects. But why don't I simply use new opertor to create concrete objects? Some articles suggest Factory methods could return objects of different concreate classes, I can do the same thing by using switch statement.

Also are there classes in .Net framework already implementing Factory pattern? I think that will give me a better ideas why it is useful.

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Architecture :: To Design Application?

Jan 18, 2011

I am very new to application design, how and from where should i start to design application

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Architecture :: How To Design Business Objects

Mar 20, 2010

designing Business Objects. What a business object class can contain ?

I have looked many sample codes and articles. Some only use properties in them. Some use private members, properties and constructoers. As more I am reading becoming more confuse.

Some sample codes that I checked were making functions in BO classes as well. what a BO class should contain and what is its purpose. Should there be functions in them as well ? If yes how they can be differentiated from Business Logic class functions.

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Architecture :: Domain Design Concern?

Mar 20, 2010

All the users of my system get a common Id (SystemUserId). There are predefined roles/groups in the system. One user can be belong one or more of these groups. We are populating the menu/dashboard at runtime according to logging credentials.All common details (properties) of group are stored in main table (SystemUser) and specialized details are stored in relavant tables.(Teacher/Student). My solution already has classes called, SystemUser, Teacher & Student.

Problem:My system should support new group addition. (eg-: Auditor)This should support new properties to be added to SystemUser/Teacher/Student or any other new group added by the Customer at runtime.

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Architecture :: Modules Design And Coding?

Feb 1, 2011

modules is being used for some sites when they are developing. what is this module. for example, this sites has some modules; membership module,comment module etc.Are modules a diffrent application that is added to site later, or they talk about httpmodules?

also, how can i begin this module design and coding?

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Architecture :: Which Design Pattern Can Be Implemented?

Mar 22, 2011

suggest me a good design pattern for implmenting the following? I have an object say myObject. This myObject is created using few inputs from the UI. After the creation of myObject. This object will be passed to few methods.. like method1(myObject);

method2(myObject);... method5(myObject);etc. Each methods will prepare the input for successive methods call. For example method1(myObject) will set the values necessary for the operation of method2.Then method2(myObject) will set up the values necessary for the operation of method3 and so on..Same object is used as the argument for every method calls.Which design pattern can be implemented?

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Architecture :: How To Design Small Web Project And Database

Oct 7, 2010

how to design following small webproject and database .i am totally new in this area.

I need to quickly develop a system so that everyone can access the status of the job going online into the system

Activities

Move the job between work centers when it's completed.

Transfer button. So when design is done we should be able to click the transfer button and move the job from Design to Procurement

Here are the work centers.

plan cerement TST Shipped Each work center should have due dates User will have to update manually due date for each work center and this will be different for each job.

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Architecture :: Entity Framework With 3 Layers Design

May 19, 2010

I am thinking to use entity model as DAL, how should I create the BLL then? What kind of datasourceobject should I use in the asp pages?

I am looking for best practice to use Entity framework 2 in the three layers design. I had experience at dataset with three layers design.

Should I use objectdatasource at the pages for gridviews? My guess is that entitydatasource by passed the BLL which is not good, so the only option left is the objectdatasource.

Could and should my BL object inherit those entity model in the DAL, so I dont need to recreate their object's property?

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Architecture :: What Is The Use Of Aggregates In Domain Driven Design

Aug 7, 2010

I want to know what is the advantages of using aggregates in c# for design patterns.

suppose i have tree tables

Member(M_Id,M_Info)

Bid(B_Id,B_Info,M_Id,Item_Id)

Item(Item_Id,Item_Info)

"One member can place more than one bid on more than one item."

so there is one to many bidirectional association between Bid and Member table.

And one to many association between bid and item table Now According to defination of aggregates in this case Item table is the root of aggregate item and item has aggregation with bid table.

and bid table holds unidirectional reference to member table and hence only bid table has access over member table.

But ultimately this will also map in database same as without using aggregate then what is use of aggregates?

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Architecture :: What Basically Is Factory Design Pattern

Jul 17, 2010

I visited this Link to study about Factory design pattern.http://wiki.asp.net/page.aspx/310/factory/ But i am confused about it still. What i understood is that we must use an Interface to define a class .In the interface we will give the prototype of functions and later on we will define it in concrete class. Is that simple concept is Factory design pattern ?

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Architecture :: How To Configure Database Design When Add A Sub Category

Apr 24, 2010

I have a ordinary Category/Product database relationship Design structure.

Now i wish to add a sub category to this architecture.

for example, Cloths Category needs to be sub divided - Women,Men,Children categories.Also what about other Ctegories such as: Car,this also has sub divisions: Model,Type.

My Products table contains ProductName field together with generic field for Size,Colour and Price fields.

How do you therefore incorporate this sub division into the existing Category/Product relationship model and is there a model example?

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Architecture :: Webapplication Design / How To Large Structure

Jul 11, 2010

how a large ASP.NET webapplication can be structured / designed with "subwebs" !? In other words I want to structure a large web-application where I have a solution with more web-application projects. These projects are more or less independent "modules". One project should be a kind of frame application with shared masterpages, an shared sitemap and and a shared authentication. Later it should also be maybe possible also to integrate loosely older websites (which where written in classic ASP. ASP.NET 1.1, ASP.NET 2.0), but this not so important at the moment

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Architecture :: Overriding Aspx Pages - Best Design?

Jan 25, 2011

I would like to provide my client with a aspx pages, with code behind provided, etc. But in some cases they will want to write their own markup - I'm thinking of having 2 directories [siblings of each other], one for the pages I provide, and the other for their custom markup. At page serve time, check to see if the client wrote their own markup and if so use it. Otherwise use the default provided.

In a nutshell I would like for my clients to be able to modify the pages I provide, but if they blow it up have a very easy way to back it out. Or to put it in a more positive light, allow them to override my pages easily.

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Architecture :: Design On Calling Multiple Web Services

Feb 23, 2011

My requirement is i need to display some quotes from some vendors in my User Interface. Some of the quote details will be fetched from database where as some vendors are giving web services to get the quote results. I need to combine the quotes from database as well as the various web service response and display in the grid.

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Architecture :: Opinions Based On Design Guidelines?

Feb 17, 2010

i just want to make sure that i am folling the correct pattern and following the right practice and i have read the book (Wrox.Professional.Enterprise.dot.NET) and based on that book here is what i come-up with my design.

my solution consists of:

Model,
Repository,
Service,
Test,
UI

[Code]....

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