With the rapid development of social economy and the continuous progress of information network technology, the extensive penetration of information technology in people's daily life, work and study has not only brought great convenience to people's lives, but also greatly improved people's work and study efficiency, which has played a huge role in promoting the development of various fields of society. With the development of computer information network technology, database is the core of information technology development. The rapid development of database technology not only plays an important role in the development and perfection of computer technology, but also makes outstanding contributions to social progress. This paper will analyze the management of computer database in detail, and explain the application of computer database on this basis.
Keywords: computer database; Management application
2 1 century is the era of information explosion. With the rapid development of information technology and its extensive penetration in social life and other fields, people's concept and way of life have changed greatly, especially the development and application of database technology, one of the core technologies of computer, which not only makes people's life easier and more convenient, but also greatly improves people's work and study efficiency, which has played a great role in promoting social development and progress. The main definition of computer database is that it is a series of data organized together and stored in a computer to achieve related goals. Database technology refers to a series of methods and means to study the related management, design and structure of database, so as to realize effective analysis and processing of data, which can be related theoretical knowledge and technology. The main feature of computer database is that all the data information in the database is interrelated and relatively independent. In addition, the database uses DBMS to control and manage data. Database technology mainly goes through the following three periods: the manual management of data in the development process, the use of file system to manage data and the formation of database system. The technical characteristics of database in each stage are different and have distinct characteristics of the times. The management of computer database will be analyzed in detail, and the application of computer database will be expounded on this basis.
First, the management of computer database.
The management of computer database mainly includes the following management technologies.
1. access management technology
Database access management technology mainly includes the following technologies: First, user authentication technology. For computer networks, all the information of users is represented by a series of data with a certain combination, so users only have data identities but no real identities. Correspondingly, in terms of related authorization, computer network is also an authorization mode for users in the form of data identity. This technology can use related passwords and passwords set by users to authenticate users through computers. In addition, there is a biometric method to authenticate users. User authentication technology can effectively prevent unauthorized users from accessing, using and modifying the database. The second is the control access technology. This technology mainly restricts some rights of users, which can not only restrict hackers from illegally invading the database and accessing related resources, but also restrict some rights of legitimate users, such as not allowing them to access protected files and directories. This technology makes relevant regulations and restrictions on the access rights of subject and object, and accordingly controls the relevant access requirements of users, in which the subject mainly refers to users and the object refers to database resources such as files. In the control strategy, there are mainly firewall control, authority control and so on.
2. Recovery and backup technology
Because the current computer network situation is very complicated, the security of computer database is interfered and influenced by many factors, so when the computer database fails for some reason, it is particularly necessary to make a backup of database information resources in advance and restore it. Once the system fails, its database information resources will be destroyed or even lost. At present, the main countermeasure to deal with the problem of data loss is to back up the data, and the backed-up data information can be easily recovered. At present, database backup methods include dynamic backup, static backup and logical backup. Database recovery methods include database backup and online log recovery. Users should choose the best means of database backup and recovery according to the causes of computer system failure and their own situation, so as to reduce or avoid the huge losses caused by data loss.
3. Encryption technology
With the wide application of information network technology in people's daily life and work, it not only creates great benefits for people, but also increases the dependence on it invisibly, which also leads to the continuous occurrence of network information security problems, and Trojan horses, viruses and other situations that endanger computer security are becoming more and more common. Especially at present, people store a lot of important data information in computer databases. For various purposes, some people seize the weakness of users' weak network security awareness and lack of network technology, illegally invade users' computer systems through computer vulnerabilities, and illegally access and tamper with users' data information by stealing users' passwords, which greatly threatens users' data information security. By using data encryption technology, these situations can be effectively avoided. Encrypting important information in the database can not only effectively prevent hackers from invading, but also ensure that the relevant data information will not be affected when the system crashes for some reason, thus realizing the security of data information [1].
Second, the application of computer database
1. Widely used in multimedia.
The wide application of computer database in multimedia field mainly refers to the combination of multimedia digitalization related technologies, data compression technologies and database technologies to realize the wide application of database technology in multimedia field. Multimedia database technology appears in the process of continuous development and application of database technology, and its main application fields are libraries, museums and e-commerce. This technology organically integrates audio and video data to form a huge multimedia information resource pool, which greatly improves the capacity of traditional multimedia information resources, and then can display a large number of multimedia information resources efficiently. The wide application of database technology in the multimedia field not only improves the technical level and service quality in the multimedia field, but also creates huge economic benefits for the multimedia field and provides a great impetus for the healthy and sustainable development of society.
2. Widely used in information management.
With the continuous development of computer database technology, its application in information resource management has become more and more extensive and achieved good results. Database technology not only improves the capacity of information resources, but also greatly ensures the security and stability of information resources and improves the information management level of users. At present, the database can be divided into statistical database, ecological environment database and Haihe River basin database according to different application fields. According to the traditional mode classification, it can be divided into three modes: network, relationship and hierarchy. The application of database technology in information resource management has the following main characteristics: First, the expansion of application fields. In the past, information management only included a single agriculture or industry. Now, after database technology is applied to information resource management, its management scope has been extended to cover industry, agriculture and service industry, which greatly improves work efficiency and promotes the development of productivity. Second, the great progress of database technology makes its application in information resource management more operable, wider in application scope and better in application effect; Third, the security of the database is greatly improved. Database encryption technology greatly improves the security of information resources. By using user accounts and encryption, information resources can be effectively managed, while improving the efficiency of information management, the risk of data information can be greatly reduced or even avoided, thus realizing the security and stability of information management [2].
3. Widely used in document management.
It can be mainly used in the following aspects: First, database technology can be effectively used for the retrieval and storage of literature files. Literature resources can be recorded in the form of CD-ROM, which can effectively store a large number of resources. It also has the characteristics of low cost, safety, reliability, huge capacity and convenient carrying. For example, it can also be used in education and teaching, such as compressing a large number of teaching materials and resources into CDs, which can greatly improve teaching efficiency; Second, it is used to search and browse computer C language literature resources. A database information system of theoretical knowledge and literature research materials related to computer C language can be established, its data information can be carefully classified, and advanced retrieval system can be introduced, which is helpful for teachers to carry out teaching and scientific research activities smoothly. For example, teachers can search useful resources according to the database for teaching design, which can greatly improve the teaching effect. In addition, scientific research activities can be carried out according to the information resources of the database [3].
Third, the conclusion
The development and application of computer database technology can not only bring great benefits to people's work, study and life, but also create great social and economic benefits, which will greatly promote social development and progress. Therefore, it is of positive significance to strengthen the research on the management and application of computer database.
refer to
[1] Zeng Lingsi. Management and application of computer database [J]. Electronic production, 20 14, (06): 58-59.
[2] Lu Genmei. On computer database management technology and its application [J]. Electronic World, 20 14, (10): 335-336.
[3] Jiang Shaohu, Pan Lanyue. On the application and management of computer database [J]. Sci-tech Information, 20 12, (19): 25-26.
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