presentacion estructura cliente servidor

1. Johanna Ortiz
Diego Niño
Alejandro Velandia
CLIENT-SERVER STRUCTURE

2. TEMARIO
 CLIENTE SERVIDOR
 DEFINICION
 OBJETIVOS
 CARACTERISTICAS DEL CLIENTE
 CARACTERISTICAS DEL SERVIDOR
 MIDDLEWARE
 VENTAJAS MODELO CLIENTE SERVIDOR
 DESVENTAJAS DEL MODELO CLIENTE
SERVIDOR

3.  Given the need for more operations in a
simple way to upload code to upper layers
and remove as much as possible of the kernel
mode
 Arose the concept of focusing the most
client-server operating system to process
user (client) who expect a response from
server process

5. Client Server
The client / server technology is the
cooperative processing of information
through a set of processors in which multiple
clients, geographically distributed, seeking
orders to one or more central servers

6. Objectives of structure
client-server
 basically looking for client-server structure
distributed in different data processing
environment to run in a more efficient

7.  In this architecture the processing capacity is
distributed among clients and servers, but are
more important organizational advantages
due to the centralization of information
management and separation of
responsibilities, which clarifies and facilitates
the system design

8. Client Characteristics
 starts applications or requests, have therefore
an active role in
Expects and receives responses from the
server.
Usually, you can connect to multiple servers
at once.
Normally interact directly with end users
through a graphical user interface.

9. Server Characteristics
 Expected to begin arriving at customers'
requests, then play a passive role in
communication (slave device).
Upon receipt of an application is processed
and then send the reply to the client.
Usually accept connections from a large
number of customers (in some cases the
maximum number of requests may be
limited).
It is not often interact directly with end users

10. ARCHITECTURE CLIENT - SERVER

13. MIDDLEWARE
 is the interface that provides connectivity
between client applications and server
applications and between applications and
databases. It is a software layer that protects
developers from having to handle low-level
details of different communication protocols,
operating systems and database architecture.
Such interfaces include API's, PRC's, Pipes,
messaging and network access to databases.

15. Advantages
-Centralization of control
-Scalability
-Easy maintenance
-Secure transactions
-Friendliness of the interface
-The ease of use.

16. Disadvantages
 Congestion
 The paradigm of C / S does not have the
classic ruggedness of a P2P network
 The software and hardware of a server is
usually very decisive.
 The customer does not have the resources
that may exist on the server

17.  thanks