System integration Project Management second job

1, the information system integration of the salient features?

(1) meet user needs as the fundamental starting point.

(2) not just equipment selection and supply, more importantly, it is a high-tech engineering

process, to provide a comprehensive solution for user needs, the core is software.

(3) The final deliverable is a complete system rather than a discrete product.

(4) is a comprehensive system engineering. Technology is the core of the system integration work, management and business activities are the guarantee of the successful implementation of the system integration project.

2, the information development phase includes several stages?

(1) Master Planning phase;

(2) system analysis stage;

(3) System Design Phase

(4) system implementation phase;

(5) system acceptance phase.

3, software maintenance is divided into several?

(1) Corrective Maintenance: Modifications made after delivery of the SOFTWARE PRODUCT to correct the problem found.

(2) Adaptive maintenance: After the SOFTWARE PRODUCT delivery changes, in order to keep the software products can change or change you can continue to use it in your environment.

(3) Improved maintenance: Modifications made after delivery of software products to improve performance and maintenance of the department .

(4) Preventive maintenance: Changes made after delivery of software products to make potential mistakes in software products become real detect and correct them before errors are detected.

4. UML Features:

(1) is not a visual programming language, but a visual modeling language.

(2) is a modeling language specification, is a standard representation of object-oriented analysis and design.

(3) is not a procedure, nor a method, but allows any process and method to use it.

(4) simple and extensible, with extended and proprietary mechanisms for easy expansion without the need for core concepts modified.

(5) Advanced Concepts emerging in object-oriented design and development (such as collaboration, frameworks, patterns, and components) provides support for the reuse of architectures, frameworks, patterns, and components in software development.

(6) integrate with the best software engineering practices.

5. How many kinds of software architectures are common? Their pros and cons?

( 1 ) pipe, filter mode, Advantages: The characteristics of cohesion and low coupling.

(2) Object-oriented mode: Typical applications are component-based software development (component-based development,CBD). Advantages: highly modular. disadvantage: calls between objects need to know the identity of the called object. If an object's identity changes, you must notify all objects that call the object.

( 3 ) Event-driven mode: the basic principle of event-driven mode is that a component does not invoke a procedure directly, but instead triggers one or more events. The main feature of event-driven mode is that the event's trigger does not know which artifacts are affected by the event, and cannot assume the order in which the artifacts are processed, or even what processes are called, and typical systems that use event-driven patterns include a variety of graphical interface tools.

4 The typical application of layered mode is layered communication protocols such as Iso/osi Benefits: ① ② support the hierarchical abstraction of system design. ③ has good extensibility. ④ support multiplexing. Cons: ① ②

( 5 ) Knowledge Base mode -a typical application is a blackboard system. The typical week of Blackboard system is the field of signal processing , such as speech and pattern recognition.

( 6 ) Client / Server mode: C/s mode is suitable for distributed system and has been widely used. In order to solve the problem of the client in the as mode, the browser peer display (Browser/server,b/s) mode is developed. Mode server-side problems, the development of a three-layer (multilayer) c/s mode, that is, multi-tier application architecture.

6, Web typical techniques for services include: ① Simple Object Access Protocol for passing information ( Simple Object Access protocal soap web service Description Language ( Web services Description language,/veb uniform description of the registration of the service, Discovery and Integration ( Universal Description discoveryand integration Uddi), ④ for data interchange Xml

suitable for use in Taiwan Web Services the situation is as follows : (1) across firewalls; (2) application integration; (3) Business-to-business integration;(4) software reuse.

not suitable for use Web the services are as follows: (l) standalone application; (2) homogeneous applications on the perimeter network.

7. Network storage mode: Direct-Attached storage (Direct attached Storage, DAS) , network-attached storage (Network attached stroage NAS) , storage Area Network (Stroage area Network, SAN) .

(1) DAS is a direct connection between the memory and the server, typically through a standard interface. DAS products mainly include products such as disk, tape library and optical storage.

(2) NAS connects storage devices to a range of computers through a standard network topology , such as Ethernet .

(3) SAN is a networked storage technology that uses high-speed optical communication as the transmission medium.

This article from "11170807" blog, declined reprint!

System integration Project Management second job