Client/server computing for technical professionals : concepts and solutions
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Client/server computing for technical professionals : concepts and solutions
Addison-Wesley Pub. Co., c1995
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Includes bibliographical references (p. 291-294) and index
Description and Table of Contents
Description
If you are in the process of building a client/server system, this practical book will give you the information you need to make the right choices, get started, and build the client/server environment that effectively meets your needs. It describes client/server concepts, common applications, design principles, and offers vendor-independent advice on all the major client/server products and technologies. This book explains in clear, readable language how client/server technology works. You will learn about the key components of distributed client/server computing, including distributed files, databases, programming, and graphics systems, as well as Internet client/server systems. All of the major client/server technologies are covered-ONC, X Window System, DCE, World Wide Web, CORBA, NFS, COM, and ODBC-with advice on their unique features, advantages, and disadvantages. You will find the latest information on such topics as Remote Procedure Calls (RPCs) and how they differ from Interprocess Communication (IPC) and Local Procedure Calls (LPCs). In addition, the book shows you how to write simple client/server programs.
Important standards and their roles in client/server computing are also explained. Numerous sidebar case studies illustrate how all of these concepts, techniques, and applications come together to create client/server systems in a real-world context. 0201633884B04062001
Table of Contents
(Each chapter contains a Summary.)
Preface.
Audience.
Organization.
Standards, Products, and Reference Systems.
Acknowledgments.
1. What Is Client/Server?
A Typical Client/Server Environment.
Our Expectations of Client/Server Computing.
Integrating the Parts *Security.
Reliability.
Scalability.
When Can You Have Your Needs Met?
Client/Server Computing: The Driving Factors.
Technical Enabler: Hardware.
Technical Enabler: Software.
Technical Enabler: Networking.
Economic Enabler: Cost.
Client/Server Computing: Issues and Barriers.
2. Partitioning Programs into Clients and Servers.
Partitioning a Nondistributed Program.
The Information Storage and Retrieval Module.
The Three Logic Modules.
The User Interface Module.
Distributing the Modules *The Logic-Information Partition.
Logic-Logic Partitions.
The User Interface-Logic Partition.
Partitioning Everything.
Using Frameworks to Implement Partitions.
What a Framework Must Supply.
Some Important Client/Server Frameworks.
3. Standards and Open Systems.
Where Do Standards Come From?
Client/Server Standards.
Source Code Portability.
Interoperability.
4. Naming, Addressing, and Location Services.
Naming and Location Services.
Implementation: Domain Name System (DNS).
DNS Naming.
DNS Addressing.
Port Numbers.
DNS Location Service.
Implementation: DCE Naming and Location.
DCE Naming.
DCE Addressing.
DCE Location Service.
What Makes for a Good Naming System?
5. Client/Server Security.
What Are the Security Threats?
What Are the Security Services?
Security Parameter: Authentication.
Security Parameter: Authorization.
Security Parameter: Privacy.
Security Parameter: Data Integrity.
Implementation: Security on ONC.
Authenticating Users.
Authenticating ONC Remote Procedure Calls (RPCs).
Implementation: Security on DCE.
DCE Security Service.
DCE User Authentication.
DCE Authorization.
DCE: Extra Levels of Privacy and Integrity.
6. Distributed File System Concepts.
What Is a Distributed File System?
Two Major Kinds of Distributed File Systems.
Costs/Benefits of Distributed File Systems.
Costs/Benefits for System Administrators.
Costs/Benefits for Users.
Costs/Benefits for Programmers and Developers.
Costs/Benefits for Managers and Architects.
Common Implementation Requirements.
Client and Server Implementations.
MS-DOS and Windows 3.1 Client Implementation.
File Access Protocols.
7. Distributed File System Implementations.
Implementation Overview.
Implementation: NFS.
How It Works.
A System Administrator's View.
A User's View.
Security Services.
The Network Information Service (NIS).
Implementation: DFS.
How It Works.
Naming and Location.
Security Services.
Implementation: Novell NetWare.
How It Works.
A System Administrator's View.
Naming and Location Services.
Security Services.
Implementation: Macintosh.
How It Works.
A System Administrator's View.
Heterogeneous Distributed File Systems.
Implementation: PC-NFS.
Implementation: Novell NetWare.
8. Client/Server on the Internet.
An Internet Overview.
Security on the Internet.
Internet Implementation Overview.
Implementation: World Wide Web.
The Server Side.
The Client Side.
How Does It Work?
Reliability.
Security.
Costs/Benefits for Programmers.
Costs/Benefits for Users.
Costs/Benefits for System Administrators.
Costs/Benefits for Vendors.
9. Distributed DBMS.
What Is a Database Management System?
DBMSs and the Client/Server Model.
The Role of Relational DBMSs.
RDBMS Example: Manufacturing Database.
SQL.
Database Views and Security.
SQL in Client/Server Protocols.
DBMS Server Hardware and Software.
Database Facelifting.
Integration into Client Applications.
The Role of ODBC.
An Excel Example.
ODBC Summary.
Distributed RDBMSs, ODBC, and the Framework Requirements.
Transactions and Databases.
10. Data Replication.
Strongly Consistent Replication.
Weakly Consistent Replication.
Replication in Distributed Databases.
11. Distributed Programming Concepts.
Categorizing Procedure Calls.
Local Programming vs. Distributed Programming.
Where Do the Procedures and Data End Up?
Flow of Control.
How Does UserInterface Locate FindPrimes?
Passing Parameters and Returning Values.
Errors and Exceptions.
Global Variables.
Holding State.
When Should You Distribute an Application?
Data Shipping and Function Shipping.
Case Study 1: The Wily Law Enforcer.
Case Study 2: The Traveling Fertilizer Salesman.
Case Study 3: The Chip Simulator.
Case Study 4: The Deficit-Chomping Politician.
Do You Need RPCs? Are IPCs Sufficient?
Programming with an RPC Package.
What the Programmer Provides.
What the IDL Compiler Provides.
What the RPC -Time Package Provides.
The RPC Model and the OSI Reference Model.
12. Distributed Programming Implementations.
Implementation Overview: RPCs.
ONC/RPC.
OSF/DCE RPC.
Microsoft Windows NT RPC.
Compatibility and Portability.
Implementation: The DCE RPC.
Step 1: Write One IDL File for Each Server Routine.
Step 2: Write Client and Server Routines.
Step 3: Write a Server Initialization Routine.
Step 4: Link the Various Parts Together.
Step 5: Test, Debug, and Perfect.
DCE RPC: Cost/Benefits for Programmers.
DCE RPC: Costs/Benefits for System Administrators.
13. Binding Clients to Servers.
Binding.
Implementation: Binding in DCE.
DCE: Finding Servers on Other Cells.
DCE Binding for Application Programmers.
Writing the Server Initialization Routine.
Writing the Client.
DCE Binding for System Administrators.
Starting the Server.
Starting the Client.
Server Replication.
DCE: Multilevel CDSs and Clearinghouses.
Threads.
Threaded Servers.
Threaded Clients.
14. Distributed Object-Oriented Computing.
The Benefits and the Vision.
Implementation: CORBA.
CORBA Code Example.
CORBA: Clients, Servers, Stubs, and ORBs.
CORBA: Client/Service Binding and Object Activation.
Implementation: COM, OLE, and Object Broker.
Object Wars.
15. Distributed Graphics.
Synchronous vs. Asynchronous Distributed Graphics.
Costs/Benefits of Distributed Graphics.
Costs/Benefits for Programmers.
Costs/Benefits for Users.
Costs/Benefits for System Administrators.
Implementation: X Window System.
What Is It?
Hardware and Software Requirements of X.
X: An Application Programmer's View.
X Naming and Location.
X Security Services.
X: A User's View.
X: A System Administrator's View.
16. Managing a Client/Server Environment.
What Do You Need to Manage?
Managing the Network.
Managing Operating System Resources.
Managing the Client/Server Framework Software.
Managing Clients and Servers.
Managing Login Accounts.
Managing Software Distribution and Licensing.
Centralized and Decentralized Management.
Monitoring vs. Controlling.
Example 1: Monitoring the Network.
Example 2: Monitoring the Operating System.
Example 3: Controlling TCP/IP.
The Manager/Agent Approach.
CMISE-Portions of the Manager/Agent Architecture.
Management Information.
Object Addressing in SMI.
An Example SNMP Management Information Base.
Limitations of SNMP and CMIP.
Scale and Efficiency.
Security.
Actions.
The Future of CMISE.
Management Frameworks Based on SNMP and CMIP.
Hewlett-Packard OpenView.
Legent AgentWorks.
Tivoli Management Environment.
17. Two Client/Server Frameworks.
The Distributed Computing Environment (DCE).
Why DCE?
DCE Background.
DCE Architecture.
DCE Cell and System Requirements.
Distributed Time Service (DTS).
DCE Cell Configuration.
DCE Added Value.
Recent DCE Developments.
CORBA and Object Services.
CORBA Interoperability.
Future Developments in Distributed OOP.
Summary of Client/Server Computing.
Appendix: Standards.
Organizations and Standards Bodies.
Standards Pertaining to Client/Server.
Bibliography.
Index. 0201633884T04062001
by "Nielsen BookData"
