1.DBA is the abbreviation of English Doctor in Business Administration, which means doctor of business administration in Chinese.
DBA is a person with academic ability equivalent to graduate students. He passed the course examination and thesis defense of business administration major for doctoral degree and reached the required academic level, and was awarded the doctorate of business administration, which reflected the highest academic level of business administration.
DBA is a comprehensive and systematic management course specially designed for senior managers in industry and commerce. Today's DBA is committed to cultivating senior business management talents with outstanding ability in the fierce international competition. Different from the traditional doctoral education model, DBA education pays attention to the effect of applying theory to practice, and students generally adopt "on-the-job learning" instead of "off-the-job learning". For example, the setting of the degree course of Doctor of Business Administration (DBA) in China Europe International Management Institute fully emphasizes the systematic study and mastery of professional knowledge and enterprise operation and management skills to improve students' business ability and pioneering and innovative ability; Grasp the industry development trend and market prospect of enterprises, and enhance students' macro-analysis and strategic decision-making ability; Enlighten development ideas, optimize management mode, stimulate innovation consciousness and inspiration, and enhance students' comprehensive ability and leadership ability; Comprehensively improve the professional, standardized and international management level and business philosophy of middle and senior managers in enterprises.
Who will go to DBA?
The target of DBA teaching is mostly talents with MBA, EMBA or equivalent master's degree, and at least 5 ~ 6 years of solid work experience is the necessary capital. Because the overall quality of students is relatively high, small class teaching is adopted to strictly ensure the high quality of teaching.
Professor Wu Jianwei, deputy dean of the School of Economics and Management of Tongji University, told the author that students who come to study DBA can be roughly divided into three categories: the first category is university professors and doctoral students, who value the close integration of DBA projects with teaching and scientific research; The second category is business people, who are also the main force in learning DBA. They come from different fields, such as science and technology management, financial analysis, network security, information software, etc., in order to seek specific solutions for enterprises. The third category is consulting professionals, because learning DBA is a good opportunity to know customers and look for opportunities. In addition, in foreign countries, government officials, non-profit organizations and charitable organizations will also choose DBA.
Relatively speaking, the entry requirements of DBA are not high: students must have a master's degree in MBA or related fields and at least 6 years of work experience, but due to the restriction of enrolling 10 ~ 15 students each semester, the application is much more difficult. It is understood that in 2002, 42 CEOs of famous enterprises at home and abroad formally signed up for the first DBA project. After strict screening, only 10 students were enrolled. Among these students are the general managers of international enterprises, the presidents of listed companies, the bosses of state-owned enterprises and private entrepreneurs, all of whom are senior managers of some domestic enterprises, with a low starting point. The words of a general manager of a company studying DBA course in Gornobel Business School are very representative. "I studied MBA 65,438+00 years ago, and now I really want to go back to school for further study and further improve my theoretical knowledge to guide my work. However, I am 40 years old. In the past, the doctoral program only focused on PhD, which didn't help me much in my practical work, so I had to resign. DBA can better meet my needs. I learned a lot of the latest practical business skills in finance and strategic management and applied them to my work at the same time. "
2. Database administrator
DBA is a database administrator, and English is a database administrator.
Some responsibilities of the database administrator:
Install and upgrade database servers (such as Oracle and Microsoft SQL server) and application tools.
Database design system storage scheme, and make the future storage demand plan.
Once a developer designs an application, a DBA is needed to create a database tablespace.
Once a developer designs an application, a DBA is needed to create database objects (tables, views, indexes).
According to the feedback from developers, modify the database structure if necessary.
Register users of the database and maintain the security of the database.
Ensure that the database is used in compliance with laws and regulations related to intellectual property rights.
Control and monitor users' access to the database.
Monitor and optimize database performance.
Make a database backup plan to recover database information in case of disaster.
Maintain archive or backup data on appropriate media.
Backing up and restoring databases
Contact the manufacturer of the database system and follow up the technical information.
3.dBA weighted decibel
The decibel unit is dB, which can be expressed in dBA after weighting.
Take the "A" weighted sound level as an example. Before adding the low-frequency and high-frequency sound pressure level values, the sound pressure level values will be reduced according to the formula. The numerical unit obtained by adding the sound pressure level values is decibel (a). Decibel (a) is more commonly used, because this scale can more accurately reflect the response of human ears to frequency. Instruments that measure sound pressure levels are usually equipped with weighing networks to provide decibel (a) readings.