What's the good of this?
This can prevent some unexpected (such as sudden power failure) cases of chaotic data, to prevent database data problems. There's money here, but the same amount there, that's all. If we open an online trading platform, it will cause big problems!
There are other operations such as adding multiple pieces of data. If the program requires that all data must be correct before it can be inserted, then the transaction will play a big role again.
Wait a minute. . . In order to avoid this situation in development, transaction management is generally carried out.
In JDBC, transactions are managed through connection objects. By default, transactions are automatically committed, which can be closed manually, committed by mit method and rolled back by rollback method. If it is not submitted, the data will not be actually inserted into the database.
Transaction is used in Hibernate for transaction management, which is similar to JDBC.
Spring also has its own transaction management mechanism, which can be managed through TransactionMananger, and this function can be completed through the injection of Spring.
What is the significance of sql transaction? Thank you for ensuring the integrity of the transaction. To put it simply, for example, if you add a piece of data in table A and delete it in table B, then if you successfully add this piece of data in table A and then delete it in table B, the deletion of data in table B will fail ... It turns out that the data is dirty to read and write, but using transactions can ensure that this will not happen.
Question 3: Help explain the following meaning about spring transaction management: PROPAGATION_REQUIRED refers to the proliferation of transactions. This means that the same transaction is used throughout the method. Dissemination of related affairs. You can look at the relevant information.
, -orderexception and -orderminimummountexception indicate when the transaction rolls back. This means that when OrderException or OrderMinimumAmountException appears in a method. Transaction rollback.
Question 4: The importance and significance of time management in daily work. 50 points is a waste of time, which shows the importance of time to life.
Therefore, time needs to be managed well. Only by managing time well can we be responsible for life.
Generally, the simplest way is to arrange all kinds of business activities in life reasonably, such as finishing important and urgent things first.
This method is called the four-quadrant rule, and it is suggested to adopt modern technology to realize time management, such as Jiameng personal information management software.
Question 5: What is the meaning of management? What is management?
Management is a process of decision-making, planning, organization, guidance, implementation and control in order to achieve a certain purpose.
The purpose of management is efficiency and effectiveness. The core of management is people. The essence of management is coordination, and the center of coordination is people.
The essence of management is to aggregate all kinds of resources of enterprises, make full use of management functions, get the best return with the best input and realize the established goals of enterprises.
Specific contents of enterprise management: 1. Planning management effectively organizes the economic activities of enterprises around the requirements of overall goals by means of forecasting, planning, budgeting and decision-making. Plan management embodies management by objectives. 2. Organizational management Establish an organizational structure, specify positions or posts, and clarify the relationship between responsibilities and rights, so that members in the organization can cooperate with each other and work together to effectively achieve organizational goals. 3. Material management systematically organizes the procurement, supply, storage, economical use and comprehensive utilization of various means of production required by enterprises. 4 quality management supervision, inspection and inspection of the production achievements of enterprises. 5. Cost management focuses on cost prediction, cost planning, cost control, cost accounting, cost analysis and cost assessment. Around the occurrence of various expenses of enterprises and the formation of product costs. 6. Financial management manages the formation, distribution and use of financial activities of enterprises, including fixed funds, circulating funds, special funds and profits. 7. Labor and personnel management is the comprehensive planning, organization, systematic control and flexible adjustment of labor and personnel in all aspects of enterprise economic activities. 8. Marketing management. It is the management of pricing, promotion and distribution of products by enterprises. 9. Team management. It means that in an organization, various departments are formed according to members' work nature and ability, and they participate in various decision-making and problem-solving of the organization, so as to improve organizational productivity and achieve organizational goals. It refers to the combing, conciseness, deep planting and promotion of corporate culture. Under the guidance of corporate culture, it matches the management lines and management modules of company strategy, human resources, production, operation and marketing.
Question 6: The meaning of state affairs and social affairs. Issues related to national security, social order, citizens' personal and property rights and interests all belong to state management affairs and are called state affairs.
Social affairs are also called public affairs. Broadly speaking, public affairs can be defined as all non-commercial activities of an organization. In a narrow sense, public affairs refers to the political activities involved in the organization and its relationship with * * * *.
See Baidu Encyclopedia for details.
Question 7: What is the role of the manager? Of course, the greatest role of managers is to achieve enterprises or specific goals.
Generally speaking, the role of managers is:
1. Ensure management order and ensure or maintain normal working order;
2. Achieve organizational goals, assist, lead and push an organization or group or team to achieve the set goals;
3. Establish, guide, organize and integrate team strength to boost morale;
4. Deal with abnormal phenomena or affairs in time;
5. Design operation modes for specific organizations, groups or enterprises to promote development.
Question 8: What is the purpose and significance of health management evaluation? 5. Health management is a personalized health affairs management service based on personal health records. Based on modern nutrition and information management technology, it provides comprehensive health protection services for everyone from the perspectives of society, psychology, environment, nutrition and sports. It helps and guides people to master and maintain their health successfully and effectively. However, the traditional medical professionals can no longer meet the growing demand for health care services. Therefore, it is necessary for health managers to become an independent profession.
Lifestyle diseases are rising all over the world, and the medical expenses are unbearable, which brings a heavy burden to families and society. It is an urgent problem for us to manage the health and diseases of the whole people from doctors in big hospitals to communities.
First, the definition of health management
Health management is a process of overall management of health risk factors of individuals and groups. That is, the cycle of health risk factors inspection and monitoring (finding health problems) → evaluation (understanding health problems) → intervention (solving health problems) runs continuously. Intervention (solving health problems) is the core. The health management cycle will solve some health problems every week, and the continuous operation of the health management cycle will put the managed objects on the road to health. Its purpose is to mobilize the consciousness and initiative of the management object, effectively use the limited resources to achieve the greatest health improvement effect, protect and promote human health, and achieve the purpose of preventing and controlling the occurrence of diseases, improving the quality of life and reducing the burden of diseases.
Second, the scientific basis of health management
The occurrence and development of diseases and the intervention strategies of their risk factors are the scientific basis of health management. Individuals experience a development process from health to disease. Generally speaking, it develops from a low-risk state to a high-risk state, with early pathological changes, clinical symptoms and diseases. This process can be very long, often taking years or even decades. Most of the changes in the period are not easy to be noticed, and there is no clear boundary between stages. Targeted preventive intervention before the disease forms can successfully block, delay or even reverse the occurrence and development of the disease, thus achieving the purpose of maintaining health.
Question 9: The documentary significance of the Regulations on Openness of Government Affairs. 20 12 on June 26th, Premier the State Council * * signed the State Council Order No.621,promulgating the Regulations on Government Administration, which will take effect on June 26th, 20 12. Chapter VI, Article 35 of the Regulations. The purpose of this regulation is to strengthen the management of office affairs, standardize the work of office affairs, ensure the normal operation of the office, reduce the operating cost of the office and build an energy-saving office. These Regulations shall apply to the administrative activities of the people's governments at all levels and their departments. According to the regulations. People at all levels should manage and standardize official reception according to the principle of simplifying etiquette, being pragmatic and frugal.
Question 10: The practical significance of China's ancient management thought. First, people should be the focus of management. The idea of "people-oriented" has always occupied a dominant position in China's ancient management thought. Taking people as the focus of management, managers must be people-oriented and "love the people", and think that the success or failure of management lies in employing people.
Second, take organization and division of labor as the basis of management. Emphasize that organization and division of labor are the basis of management and establish a clear organizational system. Family is the most basic form of organization. Both Confucianism and Legalism take a family as a unit, and individual agriculture, which is cultivated by men and woven by women, is the basic form of social production and the main aspect of management.
Third, emphasize the idea of governing the country with agriculture as the foundation and business as the end. The thought of attaching importance to agriculture and restraining business has always been in a dominant position in China's ancient management thought, and he advocated enriching the country with agriculture. Guan Zi believes that agriculture is a technology and industry to enrich the country and people, and Han Fei put forward "enriching the country with agriculture". The granary is real because farming is also the main task. Xunzi advocated that "the land tax is light, the city is flat, and there are few merchants in the province, so there is no time to seize the farming season." If this is the case, the country will be rich. " Shang Yang advocated building the country by agriculture. He said: "Without agriculture, the country cannot maintain its power with the vassals, and its strength is insufficient." Only by stabilizing farmers on the land through political, economic and legal means can the country be stable.
Fourthly, it highlights the value of righteousness and affection in management. In ancient China, there was a strong didactic management thought, which advocated "seeing the sage Si Qi, then taking what he likes", "giving equal attention to righteousness and interests", "loving each other and bringing out the best in each other", "being sensible, moving with emotion" and "serving people with virtue".
Fifth, we appreciate the strategy of achieving management objectives. Attach importance to planning, advocate winning as the best policy, adapt to environmental changes, be good at adapting to changes, and not stick to the rules.
Sixth, take the golden mean as the benchmark of management behavior. The golden mean has always played an important role in China's ancient management thought, and it is regarded as a moral standard and decision-making criterion.
Seventh, seeking common ground while reserving differences is an important value of management. Seeking common ground is an important feature of China's ancient management thought. The geographical and economic characteristics of China, such as vast territory, abundant resources and self-sufficiency, give China a natural "isolation mechanism" for its management activities. The management system and mode of thinking have always maintained their own characteristics, without too many cultural "faults", which have been blended and replaced for a long time, making China's traditional management thought highlight the pursuit of equality. Confucius devoted all his life to "self-denial and courtesy"; Dong Zhongshu even linked the feudal ruling system-"Tao" with "Heaven", and proposed that "Tao is as big as Heaven, and Heaven remains unchanged, so does Tao." National reunification has always been the pursuit of politicians, and this concept has also extended to all aspects of social life.