Structure Of Relational Database

NoSQL systems generally advertise a feature that is good performance and then why? relational database has developed for so many years, various optimization work has been done very deep, nosql system is generally absorbing relational database technology, and then, in the end what is the constraints on the performance of relational database? We look at this problem from the perspective of http://www.aliyun.com/zixun/aggregation/9344.html "> System design." 1, index support. Relational data ...

Cassandra is a mixed relational database, similar to Google's bigtable. Its main function is richer than the dynomite (distributed Key-value Storage System), but the support degree is inferior to the document storage MongoDB (the open source product between the relational database and the non relational database, the relational database has the richest function, most resembles the relational database. The supported data structure is very loose and is a JSON-like Bjson format, so you can store more complex data types. ) Cassa ...

With the rise of internet web2.0 websites, the relational database has become a very hot new field, the development of the non relational database products is very rapid. 　　But the traditional relational database in dealing with web2.0 website, especially the super large-scale and high concurrent SNS type web2.0 pure dynamic website already appeared to be powerless, has exposed many insurmountable problems, for example: 1, high configured--to the database higher concurrent reads and writes the demand WEB2.0 website to be based on user personalized information to generate real-time dynamic ...

Scalable distributed Relational Cloud database scheme Wang Minwudi Chong Zhu Zefei Li Renwang analyzing the base of various relational and database to meet the requirement of high concurrency and high availability of cloud database Based on the convenience and scalability of relational data, a scalable relational cloud database scheme is proposed. This scheme presents a new system architecture. Database read-write process data merging process data model and structure and storage and analyzing the bottleneck of its system architecture theory finally, the data consistency availability and online running performance are analyzed and the results show that this scheme ...

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 ...

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 ...

The rapidly growing structure and http://www.aliyun.com/zixun/aggregation/13739.html of enterprises "> The management requirements of unstructured data is an important factor in driving enterprises to use Apache Hadoop software. But Hadoop does not replace all existing technologies, according to a study published late last month by Ventana that Hadoop is now working with traditional relational databases (RDBMS). ...

SaaS is generally considered to be a provider for the enterprise to build the information required for all network infrastructure and software, hardware operating platform, and responsible for all the implementation of the prophase, the maintenance of the latter series of services, enterprises do not need to buy hardware and software, building rooms, recruiting IT staff, can use the Internet Information systems 　　Just like opening a tap to water, an enterprise leases software services from a SaaS provider, depending on the actual needs. At present, many multinational information technology industry companies in the world are developing SaaS based products and services to provide a technology platform for the future development of the Internet.

Introduction with the advent of the cloud computing era, various types of Internet applications are emerging, the relevant data model, distributed architecture, data storage and other database related technical indicators also put forward new requirements. Although the traditional relational database has occupied the unshakable position in the data storage, but because of its inherent limitation, has been unable to satisfy the cloud computing age to the data expansion, reads and writes the speed, the support capacity as well as the construction and the operation cost request. The era of cloud computing has put forward a new demand for database technology, which is mainly manifested in the following aspects. Mass data processing: to ...

The concept of blockchain to technology has been around for a long time, but with the heat of the past two years, it has gradually become known by the market and many technicians.