C#

public interface IDataLayer {
 void DoSomething(string firstName, string lastName);
}

public interface IDataLayerFactory {
 IDataLayer Generate();
}

public class BusinessLayer {
 private IDataLayerFactory dataLayerFactory;

 protected BusinessLayer() {
  dataLayerFactory = null;
 }

 public BusinesLayer(IDataLayerFactory pDataLayerFactory) {
  dataLayerFactory = pDataLayerFactory;
 }

 public int Method1(string firstName, string lastName) {
  return dataLayerFactor.Generate().DoSomething(firstName, lastName);
 }

}

public class BusinessLayer {
 private IDataLayer dataLayer;

 protected BusinessLayer() {
  dataLayer = null;
 }

 public BusinesLayer(IDataLayer pDataLayer) {
  dataLayer = pDataLayer;
 }

 public int Method1(string firstName, string lastName) {
  return dataLayer.DoSomething(firstName, lastName);
 }

}

class ASpecificDataLayer : IDataLayer {
 public void DoSomething(string firstName, string lastName) {
  // implementation goes here
 }
};

class ASpecificDataLayerFactory : IDataLayerFactory {
 public IDataLayer Generate() {
  return new ASpecificDataLayer();
 }
};

MKC002 wrote:

Please suggest should i go for website development in asp.net or php.

MKC002 wrote:

Since linux server does not support .net

MKC002 wrote:

I do not have idea about which server is more secure (linux or windows)

MKC002 wrote:

Also which website provides better performance aspx or php