Create Index Oracle

"IT168 Technical Documentation" Since Oracle and HP launched Exadata, I have been very concerned about this product, and previously wrote an Oracle database machine introduced it. 　　Last year, Oracle and Sun merged to launch Oracle Exadata V2, which has several changes compared to previous generations: first, using sun hardware; second, it claims to support OLTP applications; third, Oracle 11g R2 offers more new features. Exadata S ...

In the field of management information, cloud computing is the world, manufacturers to enter the cloud computing technology market is multifaceted, the major software manufacturers wits, confrontation clouds. Cloud computing system uses a lot of technology, comprehensive, high demand. The programming model, data management technology, data storage technology, virtualization technology, cloud computing platform management technology is the most critical. The fundamental advantage of cloud computing is the increased flexibility and cost savings that are greatly met by business costs and business agility, and create new business models and market opportunities. It can be said that the cloud meter ...

With the rapid development of information technology and its application in depth, many enterprises are now in a stage of modernization, fast paced and closely integrated with the market, and need to be closer to users. At the same time, more and more complex user needs, such as personalization, socialization, mobility, multi-channel consumables, and self-service, continue to impact every step of the way. To achieve greater business success, companies must better meet the growing internal and external user engagement needs, better align themselves with users, employees, and partners, expand and deepen their business And use ...

Affirmation: The article is longer, if you are the industry webmaster please read carefully, welcome to join the industry webmaster QQ Group: 37466050 (using the invitation mechanism, add please specify the URL.) The rise of the industry web site has become an unstoppable trend in China's e-commerce development, according to a survey of 07 growth rate is expected to be close to 50%. For many industry websites, after a period of development, to seize the opportunity to win a certain market share. 　　At the same time, will face many new challenges, the market competition will become more and more fierce. Compared with the Internet companies that have VC support ...

The logical design of database is a very broad problem. In this paper, the main key design of the table is discussed in the design of MS SQL Server, and the corresponding solutions are given. Primary key design status and problems about database table primary key design, in general, based on business requirements, based on business logic, the formation of primary key. For example, when sales to record sales, generally need two tables, one is the summary description of the sales list, records such as sales number, the total amount of a class of cases, and the other table record of each commodity ...

1.1: Increase the secondary data file from SQL SERVER 2005, the database does not default to generate NDF data files, generally have a main data file (MDF) is enough, but some large databases, because of information, and query frequently, so in order to improve the speed of query, You can store some of the records in a table or some of the tables in a different data file. Because the CPU and memory speed is much larger than the hard disk read and write speed, so you can put different data files on different physical hard drive, so that the execution of the query, ...

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.

Through the introduction of the core Distributed File System HDFS, MapReduce processing process of the Hadoop distributed computing platform, as well as the Data Warehouse tool hive and the distributed database HBase, it covers all the technical cores of the Hadoop distributed platform. Through this stage research summary, from the internal mechanism angle detailed analysis, HDFS, MapReduce, Hbase, Hive is how to run, as well as based on the Hadoop Data Warehouse construction and the distributed database interior concrete realization. If there are deficiencies, follow-up and ...

Recently wanted to do a DataGrid function through PHP things, so that you can directly modify the contents of the database table, without the development of [new data page], [edit page], so looking for the Internet to find something similar A, open source, have paid, but basically are based on MySQL. Due to the need to connect to Oracle personally from the secondary development and page style phpMyDataGrid is still quite good. This article first introduced the use of MySQL-based methods, and then briefly introduce the Oracle connection (based on ...

February 26, LinkedIn open-source Its low latency change data capture system Databus, which can capture data on MySQL and Oracle data sources, but now LinkedIn is only open source for Oracle connectors. Databus, as a consistent safeguard component of the LinkedIn ecosystem, is a product with high security, even if it is still highly effective in the case of low latency, and its biggest characteristic is unlimited lookback ability and rich subscr ...