Introduction to NonStop Operations Management

Application Management
Introduction to NonStop Operations Management–125507
11-10
Client/Server Processing
Tools
Table 11-1 lists Tandem software products that can help you develop and manage online
transaction-processing applications. For detailed descriptions of these products, refer to
Section 14, “Operations Management Tools.”
Client/Server Processing
Client/server processing programs are characterized by the following:
•
Programs are divided between a client program, which resides on a PC or
workstation, and server programs, which reside on a host system (often, a larger and
more powerful system). The client/server architecture is linked together by local
area networks (LANs) and wide area networks (WANs).
•
Client programs provide the presentation services (GUIs) and part of the program
logic. The rest of the program logic and the database management functions are
provided by the server programs. Users typically request database information from
the server program through an easy-to-use GUI provided by the client program.
•
Servers are generally powerful computer systems that perform a specific type of
service, such as file servers, database servers, and print servers. Clients are typically
PC-class computers, workstations, or other client devices such as ATM devices. Ten
to fifty clients per (database) server is common. Network components include
transceivers, bridges, routers, hubs, and gateways.
•
Client/server environments are very diverse. They range from a small departmental
LAN with a single server to e-mail networks connecting tens of thousands of users
to hundreds of servers. Figure 11-3 shows a simple client/server environment;
Figure 11-4 shows a complex environment with a ServerNet wide area networking
(SWAN) concentrator configured to a local system’s ServerNet system area
network (SAN).
Table 11-1. Online Transaction-Processing Tools
Product Function
NonStop Transaction
Services/MP (NonStop
TS/MP)
Provides the programs and operating environment required for
developing and running OLTP applications.
Pathway/TS Provides tools for developing and interpreting screen programs
to support OLTP applications in the Guardian environment.
NonStop Transaction
Manager/MP (NonStop
TM/MP)
Helps you maintain the consistency, durability, and integrity of
distributed databases that are being updated by concurrent
transactions.
Transfer Enables organizations to move and manage information
efficiently within a single Tandem system or within a network
of distributed systems. Serves as the foundation of PS MAIL
(electronic mail system) and other Tandem products.