-
Anonymous users2024-02-07A relational database system developed by IBM. DB2 is mainly used in large-scale application systems, has good scalability, can support from mainframe to single-user environment, and is applied to OS 2, Windows and other platforms. DB2 provides a high level of data utilization, integrity, security, recoverability, and the ability to execute small- to large-scale applications with basic platform-agnostic functionality and SQL commands.
DB2 uses data grading technology to make mainframe data easily transferred to the LAN database server, allowing client server users and LAN-based applications to access mainframe data, and making database localization and remote connectivity transparent. It is known for having a very complete query optimizer, with external connections that improve query performance and support for multi-task parallel queries. DB2 has good network support capabilities, each subsystem can connect more than 100,000 distributed users, and can activate thousands of active threads at the same time, which is especially suitable for large-scale distributed application systems.
It's still good to learn, and it's not too much to work on.
-
Anonymous users2024-02-06That's a big picture.
The main reason is that it is used in different occasions.
DB2 is a series of relational database back-management systems exported by IBM, which are served on different operating system platforms. While DB2 products are UNIX-based systems and personal computer operating systems, DB2 pursues Oracle's database products for UNIX-based systems and Microsoft's access under Windows.
It should be used in banking systems with high security requirements.
Oracle is the first word in the English translation of oracle bone inscriptions unearthed in Yinxu (yīn xu), which means "oracle" in English. Oracle is the world's leading developer of information management software, known for its complex relational database products. Oracle database products are used by the top 1,000 companies on the Fortune Rankings, and many large** companies use Oracle systems.
It is mostly used in the world's top 500 super enterprises.
-
Anonymous users2024-02-05They belong to two different companies.
However, they can be deployed in cross-platform operating systems such as Windows and Linux
-
Anonymous users2024-02-04DB2 can run on 390 or Z-Series IBM hosts, and Oracle can run on AIX on those hosts.
-
Anonymous users2024-02-03Are you asking what Oracle and DB2 are? Both Oracle and Db2 are large databases, and Db2 is larger than Oracle in terms of scale, but Oracle is more widely used. Oracle is a product of Oracle, while DB2 is a database product of IBM.
-
Anonymous users2024-02-02It is a database that stores data written on an application, and can also be used by a program to view the data in the database.
-
Anonymous users2024-02-01Oracle, IBM DB2, Microsoft SQL Server, MySQL (free).
-
Anonymous users2024-01-31On the whole, both are relational databases, and they are different products from two manufacturers. Each product has many characteristics, first, the difference between the two is introduced as follows:
1. In terms of architecture, DB2 instances and databases are separated, because multiple instances can be created, and the recovery of the database can be directly restored to the instance, which is much simpler than oracle;
2. In terms of management tools, DB2's management tools are relatively simple, not as good as Oracle's Enterprise Manager.
3. In terms of backup management, the backup function of DB2 is not as powerful as Oracle's RMAN.
4. In terms of operation window, DB2's command execution mode can execute SQL on the command line or SQL on the command window, which is much more flexible than SQLPLUS;
5. In terms of automatic maintenance, DB2 is slightly better in automatic maintenance, which can automatically defragment the database and rebuild the index on a regular basis, while the automatic maintenance function of Oracle is relatively general;
6. In terms of memory monitoring, the memory status monitoring function of DB2 can flexibly configure parameters;
7. In terms of connection mode, the remote network connection of DB2 adopts the cataloging method to describe the connection string mode. The way Oracle uses files to configure remote servers is more convenient;
8. In the connection configuration window, the connection configuration UI design of DB2 is not as good as Oracle, and the reliability of DB2 on the Windows platform is not good in terms of platform portability;
9. The automatic lock management mechanism of DB2 is more reasonable and convenient;
10. The automatic memory management of DB2 is stronger than that of Oracle, and almost all memory parameters can be automatically managed.
Second, the two generation of manufacturer information introduction:
Oracle is a relational database management system developed by Oracle (Oracle) in the United States to provide a set of distributed database management systems with distributed databases as the core; DB2 (also known as IBM DB2) is a relational database management system developed by IBM in the United States. The specific features are described in the above categories.
3. Reference**:
Company Companies.
How many horses does the air conditioner have? What does 1 horse or 2 horses mean? I finally figured it out today.
The major inventions and discoveries of mankind in the 20th century are: Marconi in Italy in 1901 invented radio communication, in 1903 the Wright brothers in the United States invented the airplane, in 1907 the Belgian B. Beckland invented plastic, in 1928 Fleming discovered penicillin in the United Kingdom, in 1923 Baird invented the television set in the United Kingdom, and in 1942 the United States nuclear ** was successfully developed. >>>More
I'd love to tell you what love is, but I can't tell you and can't express it well. There has never been an accurate definition of love, because love is very real and illusory, beautiful and cruel. You believe that there is, she has, you realize what color love is, it is what color, you understand what shape it is, it is what shape, you don't believe in it, you don't experience it, it's nothing... …There is a great ** called "Forrest Gump" which is quite touching, and there is such a sentence in it, "I don't know what love is, but I love you, Jenny". >>>More
Forehead... I haven't delved into this...
But it should be like the armor in foreign blockbusters and this mysterious rune language to produce magical power, haha. >>>More
This problem is a bit tangled Generally speaking, there is that kind of method, but some are not applicable, first recommend two First, create some restrained troops, such as the Viking ghost soldiers of the Terrans, put EMP (that is, the magnetic wave suddenly lights up the shield of the aircraft carrier or the user is lock), if the Protoss uses some phoenixes to attract firepower, use the void ship to solve them one by one, and if the Zerg is to use the anti-air spores to deal with it, delay the time Try to drag it out Don't use a small thing to hit it hard, otherwise, --- will use the anti-air Corruptor is better to make more (of course, it depends on the number.) Once there are more than 10 ships, unless you are a little lucky, or you are a master of micro-manipulation, it may drip down The average person will lose confidence when he encounters so many Fight gg But is it glorious to die Fight to the end) If you have some small fragments and the economy is good and there are many soldiers, you can repel the aircraft carrier while harassing the other party's mines, which is also a good way --