inserting data in Database using Wcf Service

IDALService.cs

[OperationContract]
        bool functionname(int mID, string mName);

DALService.svc.cs

public bool functionname(int mID, string mName)
        {
            return mobjDal.functionname(mID, mName);
        }

DAL File(Class.cs)
public bool functionname(int mID, string mName)
{
try
{
tblTable objTable = new tblTable(); // objTable is object of table in which you want to add record
objTable.ID = mID;
objTable.Name = mName;
mobjEntity.tblTable.AddObject(objTable); // mobjEntity is the object of Entity
mobjEntity.SaveChanges();
return true;
}
catch(Exception mEx)
{
return false;
}
}

Please go through following url for implement Transaction on OperationContract
6 Steps to Enable Transactions in WCF[^]

Hope this post will help you..
Regards,
Jitendra Kumar

Consuming of the Wcf service is not a problem, That i know, But The problem is that through this service all the clients will insert the data in to database at the same point of time. Will that create a problem? or the wcf service manages that at its own end? If That could be managed at the service end , Then what I need to DO.?

I think its better to handle this situation by using SQL Broker Service[^]

1: Insert Data in Broker Queue using WCF Service
2: Create a service that read Broker Queue periodically and Insert in to what ever you want. 

Get best code with screen shots at

http://www.mascotcode.com/article/131/insert-data-into-sql-server-database-using-wcf-service[^]

i think that, there is no problem that how many users are consuming your WCF service at a time.