The traditional teaching is teachers' use of textbooks, slide plus some demo to teach students knowledge, students are always passive to accept knowledge, and now widely application of network technology, in addition to learning knowledge in the classroom, students can also through the Internet to learn.The website itself is based on the Internet, with openness, can show the learning content and resources to anyone, and enhance students' opportunities to exchange ideas with each other.
Lab website construction after the implementation of network information management, can make the school education structure and system and its operational mechanism further to meet the needs of society, science and technology progress, is to improve the investment benefit of teaching resources, some effective measures to encourage students to use more strengthen basic training of teaching resources, strengthen the experiment skill training and important way of cultivating creative spirit, provides the technical support for the reform of experimental teaching...
2. The role of the design of the laboratory website.
Laboratory sites have been colleges and vocational colleges as a new teaching management mode applied to teaching, use network technology can obtain information publishing and real-time management two big functions.It has improved the office efficiency, reduced office consumables, and realized the management requirements of the equipment.Through the design of laboratory website, information exchange and sharing are realized.
3. Website structure and technology.
The basic purpose and starting point of website design is: based on multimedia and network application environment, the principle of practicality, openness and seeking truth from facts is adhered to.In order to realize the comprehensive experimental course query and the function of managing user information, the teaching experiment level will be improved comprehensively.The reasonable arrangement, starting from the whole, step by step, can fully reflect the overall system architecture in the LAN, and finally adopt the three-layer structure technology based on the WEB.In this system, each layer is their work, the first layer as the client program is the user interface, the business service is realized by using the middle tier components, any business data processing functions are itself does not have, so the client is configured is relatively simple, as long as the installation of a corresponding operating system can be completed, and the operation of the customer needs to use IE browser.The middle layer is essentially an asp application running on a WEB platform, belonging to the application service layer.The third floor is for the data Access layer, in web-based three-tier structure, Access as the database server, adopted by the system administrator to maintain the application server, greatly reduces the overhead on the system maintenance.
Iv. Main contents and functions.
1. Online exhibition hall
The online exhibition hall in the design of laboratory website is mainly to show students' innovative achievements, excellent work and experimental reports.In addition, the corresponding data can be provided, which can be downloaded and applied to the experiment of the course.
2. Introduction to the center
Brief introduction of laboratory establishment time, indoor management personnel and equipment situation.The experiment of specialized course and public lesson can be combined together by computer lab to take on the experiment course task of all the students in the school.
3. Course management
The so-called curriculum management mainly focuses on four aspects: the query of the time of the course arrangement, the SQL is the query statement that is often used;In the experiment arrangement, the experimental schedule of this semester is published and processed, so that students can master the experiment time and use the laboratory reasonably.In terms of the management and utilization of the information column, it is mainly to publicize the latest news of the center, especially the important notices of students and teachers.(4) and experiment situation of records of students, comprehensive, system, teachers can have knowledge of the experimental conditions of students have a basic understanding, accomplish know fairly well, and also to manage the usage of computer.
4. User management
The user is managed by the user administrator, and the user is divided into administrators and students.The most important operating procedure in the construction of a laboratory website is registration.If you do not log in, you can only visit as a tourist. You can only see the different interfaces on the website after you login.In order to keep the whole system in a safe state, you should also install firewalls, network security systems, and database security access systems.
5. Database features of laboratory website design.
Research database technology is to analyze how to obtain and process data efficiently. As an important part of computer system, database system has the following characteristics:
(1) the main feature of the database is the structure of data, which is the fundamental difference between the current database and the file system.
(2) the data redundancy is small and easy to expand.As a whole, the database's description of data is not simply applied to one aspect, but it plays a role in the whole system and is applied more widely.So they can make the data redundancy greatly reduced, on the basis of this also save more time and storage space, which also make the incompatibility between the data and to avoid inconsistency, bring much more convenience.
(3) program independence and high data are the characteristics of the database technology in the current website design, so the definition and description of the data should be separated from the application.General data access is managed by DBMS, so users can ignore some details, such as: access paths, etc., which has also encouraged web design further simplification of the program.
(4) data item is the minimum access unit of data.It has two aspects: it accesses a data item or a set of data items in the database;To access a record or set of records.
(5) it can provide data control functions of security control, integrity control and concurrency control.
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