Dameng database learning experience
With the development of the level of localized information technology, more and more domestically-made software have come to the fore and become mainstream informatization products in their fields. In the field of operating systems, there are Tongxin, Kirin, etc., in the field of database, there are Dameng, magical power, Representatives such as Jincang, other types of representatives include Kingsoft Office, Edraw, ZW, etc., and of course there are more excellent software products that have not been touched by individuals.
Recently, due to work reasons, I was fortunate to participate in the training and learning of Dameng Database, and have a deeper understanding of Dameng Database. I have also contacted domestic databases such as Gbase and China General Motors before, but I don't know much about it in general. Since the development of domestic databases, many products have appeared, showing a trend of blooming flowers. The reputation of some people still reflects that domestic databases are not easy to use and there are many problems, but I think this problem needs to be treated in a dialectical way. If you compare the products alone, it may still be the world of ORACLE and other foreign databases in the database field, but the speed of development of localized software in recent years is also obvious to all.
In recent years, Xinchuang’s Dongfeng has brought more opportunities to domestic software. Of course, Dameng Database has been a first-line brand of domestic databases before Xinchuang. Below I will briefly share what I know about the Dameng database. Wuhan Dameng Database Co., Ltd. was established in 2000. Its predecessor was the Database and Multimedia Research Institute of Huazhong University of Science and Technology. It was the earliest scientific research institution engaged in the research and development of database management systems in China. What I know about Dameng 8 (abbreviation: DM8) is one of the products of Dameng Database Company. The largest shareholder of Wuhan Dameng Database Co., Ltd. is China Software and Technology Services Co., Ltd. (abbreviated as: Chinasoft), which holds 25.21% of the shares. Chinasoft is a large high-tech listed software company controlled by China Electronics Information Industry Corporation (CEC). Wuhan Dameng is a localized database product with a background of state-owned assets.
Regarding the product and technology of DM8, after participating in the training, I think there are a few points that are better.
First, DM8 has good compatibility. There is a configuration in the database configuration as "COMPATIBLE_MODE", which refers to whether it is compatible with other database modes. 0: Incompatible, 1: Compatible with SQL92 standard, 2: Compatible with ORACLE, 3: Compatible with MS SQL SERVER, 4: Compatible with MYSQL, this function is more useful in actual scenarios.
At present, most applications use the Oracle database, and users more or less use some special functions of Oracle, and these special functions are not implemented in other databases. In order to facilitate application transplantation, DM implements many unique Oracle functions and syntax, so that most Oracle applications can be directly transplanted to DM without modification.
The second is convenient and easy to use. The use of Dameng database is in line with the old DBA's usage habits. In order to make it easier for users to master the Dameng database, DM provides a large number of features to simplify the use, management and maintenance of the system. The specific manifestations are: dynamic buffer, database repeat , Synonyms, dynamic performance view and other functions, in short, compared with ORACLE, whether it is stand-alone management or cluster management, the ease of use of Dameng database is greatly improved.
The third is rich information and many tools. The advantages of this surface make it easy for beginners to get started. After the user installs the Dameng database, there will be a wealth of information in the installation directory, directly above:
In terms of tools, there are disql, manager, monitor, dts, console, dmdbchk, dminit, etc., all of which are very practical tools. In addition, the level of the training teachers is high and the lectures are also very good, but unfortunately there is no recording.
In addition, there are many other advantages. For example, Dameng database is compatible with most mainstream operating systems and has been tested for adaptation with many domestic operating system manufacturers. In terms of security, Dameng Database has a security version, which is based on the separation of four powers of the enterprise version, and its security features are further enhanced (strong access control, customer use, etc.). There are also high reliability, high availability, high performance, rich product lines, etc. These are no longer described, and everyone will have a better experience in the process of learning and using.