March 9 Operation Information System chapter III knowledge points

What are the characteristics of information system integration?
A: (1) Information system integration to meet user needs as the fundamental starting point
(2) Information system integration is not only equipment selection and supply, more importantly, it is a high-tech engineering

process, to provide a comprehensive solution to user needs, the core of which is the software
(3) System integration The final deliverable is a complete system rather than a discrete product.
(4) System integration including technology, management and business and other work, is a comprehensive systems engineering. Technology

Is the core of system integration work, management and business activities are the guarantee of the successful implementation of system integration projects.

What are the phases of the development phase in the life cycle of the second question information system?
A: The life cycle consists of 4 stages respectively. Project, development, operation, extinction

The development phase includes
1. Master Planning Phase
2. System Analysis Phase (this stage refers to Party B)
3. System Design Phase
4. System implementation Phase
5. System acceptance phase (prior to formal handover is the development phase)

The standard of the operational phase is the formal handover to the user or, into the operational phase
The operations phase is divided into 4 categories:
1. Troubleshooting Maintenance 2. Adaptive Maintenance 3. Perfect Maintenance 4. Preventive Maintenance

The maintenance type of software engineering and the applicable conditions?
Answer: Software maintenance includes the following types
1. Corrective Maintenance: Changes made after the delivery of the SOFTWARE PRODUCT to correct the problem found
2. Adaptive maintenance: After the delivery of the product changes to maintain the software products can change or change in the ring

Can continue to be used in the environment
3. Improved maintenance: Modifications made after delivery of software products to improve performance and maintainability
4. Preventative maintenance: Changes made after delivery of software products to make potential errors in software products a real error

To detect and correct them before

Four questions about UML features?
A: UML describes the static structure and dynamic behavior of the system, and the static structure defines the properties of the important objects in the system.

Relationships between these objects, dynamic behavior defines the time characteristics of the object and the object as the completion target

and the mechanism for communicating with each other

Features are as follows: 1. UML is not a visual programming language, but a visual modeling language.
2.UML is a modeling language specification, which is a standard representation of object-oriented analysis and design.
3. Not a process, nor a method, but allows any process and method to use it
4. Simple and extensible, extensible and proprietary mechanism for easy expansion without the need for core concepts

Be modified.
5. Advanced concepts emerging in object-oriented design and development (such as collaboration, frameworks, patterns, and groups

Support, emphasizing the reuse of architectures, frameworks, patterns, and components in software development.
6. Integration with best practice experience in software engineering

Five-Q software architecture has several common software architecture patterns and characteristics?
A: 1. Duct/Filter Mode: Features cohesion, low coupling
2. Object-oriented mode: Features built-based software development, highly modular
3. Event-driven mode: The triggering of the event does not know that the build is affected by the event and does not

The processing order of a fake build
4. Layered mode: Features layered communication protocols, such as the Iso/osi seven-layer network model
5. Knowledge Base mode: Features blackboard system mainly by knowledge source, blackboard data structure, and control three

Part of the composition
6. Client/server mode (c/S mode) features: The model is simple, easy to understand and accept,

For distributed systems, a wide range of references are available. In order to solve the client's problem in C/S mode, the development has formed

Browser/server mode, b/s, in order to solve the server-side problem in C/S mode, the development of three layers (multilayer

c/s mode, i.e. multi-tier application architecture

What are the typical techniques and characteristics of the six-webserver and what are the conditions for webserver?
A: Typical techniques for Web services include simple object access protocols for passing information

PROTOCL,SOAP) is used to describe the service volume Web Service Description Language (Web services Description

LLANGUAGE,WSDL) Consent description, discovery, and integration for the registration of Web services (Universal Description

Discovery and Integration,uddi) XML for Data interchange
Scenarios that apply to Web services:
1. Cross firewall 2. Application integration 3.B2B Integration 4. Software Reuse
Does not apply to the situation with the Web:
1. Stand-alone application 2. Homogeneous applications on the LAN

Seven questions about network storage mode and their characteristics?
A: The network storage mode has the following three kinds:
1. Direct-attached storage Das, network-attached storage NAS, storage area Network San
Das is a direct connection between the memory and the server, typically through standard interfaces, such as small computer system interfaces.
The NAS then connects the storage device to a series of computers through a standard network topology, such as Ethernet.
Secondly, the SAN is a network storage technology using high-speed fibre Channel as transmission medium. It networked the storage system and realized the purpose of high-speed shared storage and data access.

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March 9 Operation Information System chapter III knowledge points