Database Single User Mode

As a software developer or DBA, one of the essential tasks is to deal with databases, such as MS SQL Server, MySQL, Oracle, PostgreSQL, MongoDB, and so on. As we all know, MySQL is currently the most widely used and the best free open source database, in addition, there are some you do not know or useless but excellent open source database, such as PostgreSQL, MongoDB, HBase, Cassandra, Couchba ...

After more than eight years of practice, from Taobao's collection business to today to support all of Alipay's core business, and in the annual "Double Eleven Singles Day" continue to create a world record for the transaction database peak processing capacity.

No database system can avoid a crash situation, even if you use a clustered, two-machine hot standby ... It is still not possible to completely eradicate the single point of failure in the system, and for most users, this expensive hardware investment cannot be sustained. So, when the system crashes, how to restore the original valuable data becomes an extremely important problem. In the recovery, the ideal situation is that your data files and log files are intact, so that only need to sp_attach_db, the data file attached to the new database, or in the downtime of the ...

Intermediary transaction SEO diagnosis Taobao Guest Cloud mainframe technology Hall It is well known that Oracle, IBM, Microsoft, the three major database areas, and still tirelessly launch new products, and constantly enhance its functionality, although the database is only part of their many product lines, but the data as a basis for it, 　　All the efforts to make the data seem so important. Database (DATABASE,DB) is a collection of organized, shared, and managed data that is stored in a computer for a long time. In the traditional sense, the database ...

Active directory refers to a directory service in a Windows 2000 network. 　　It has two functions: 1. Directory services. Active Directory provides a set of directory service features that centralize organization management and access to network resources. Active directory makes network topologies and protocols transparent to users so that users on the network can access any resource, such as a printer, without knowing the location of the resource and how it is connected to the network. Active D ...

30 years of database development and formation of Oracle, IBM, Microsoft and other representative of the strong monopoly pattern, making the traditional domestic database not only untimely, coupled with the technology to follow the strategy, in the field of business processing tenacious fight, although the product continues to progress, market applications have also been to achieve a single point of breakthrough, But mostly in non-core applications. Despite the government's continued strong support, but in the monopoly barriers and open source software around the attack, in addition to the policy market, it is difficult to achieve a large-scale breakthrough, has not yet formed a benign cycle of enterprise development and government support for a mutually beneficial situation. ...

The intermediary transaction SEO diagnoses Taobao guest cloud host Technology Hall "I the World Net Business note" for the user, Choice hotel, the traditional channel is still the recommendation of friends and relatives, but at the same time, the wedding is a highly personalized thing, the process is to see the venue, determine the date. Wen/Wang Haitian in the whole wedding industry chain, because each chain of independent, customer unit price and high, make the user's decision cost is very high. 　　In these chains, the wedding is scheduled to be at the forefront. 2007, Huekenan ...

30 years of database development and formation of Oracle, IBM, Microsoft and other representative of the strong monopoly pattern, making the traditional domestic database not only untimely, coupled with the technology to follow the strategy, in the field of business processing tenacious fight, although the product continues to progress, market applications have also been to achieve a single point of breakthrough, But mostly in non-core applications. Despite the government's continued strong support, but in the monopoly barriers and open source software around the attack, in addition to the policy market, it is difficult to achieve a large-scale breakthrough, has not yet formed a benign cycle of enterprise development and government support for a mutually beneficial situation. ...

HBase is a distributed, column-oriented, open source database based on Google's article "Bigtable: A Distributed Storage System for Structured Data" by Fay Chang. Just as Bigtable takes advantage of the distributed data storage provided by Google's File System, HBase provides Bigtable-like capabilities over Hadoop. HBase Implements Bigtable Papers on Columns ...

No database system can avoid a crash situation, even if you use a clustered, two-machine hot standby ... It is still not possible to completely eradicate the single point of failure in the system, and for most users, this expensive hardware investment cannot be sustained. So, when the system crashes, how to restore the original valuable data becomes an extremely important problem. In the recovery, the ideal situation is that your data files and log files are intact, so only need to sp_attach_db, the data file attached to the new database, or in the downtime ...