A Relational Database Is

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 ...

Absrtact: Paytm was invested by Alibaba $575 million, valued at $2 billion Paytm by Alibaba Group and its financial services subsidiary Ant Micro Financial Services group to invest about 575 million U.S. dollars. It is understood that after the completion of the transaction, Alibaba and Ant finance will hold one, Paytm Alibaba 575 million dollar investment, the valuation of more than 2 billion U.S. dollars Paytm by the Alibaba Group and its financial services subsidiary Ant Micro Financial Services group to invest about 575 million U.S. dollars. It is understood that after the completion of the transaction, Alibaba and ...

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 ...

Cubrid is an open source object-relational database developed in Korea. Cubrid is a widely used free open source http://www.aliyun.com/zixun/aggregation/22.html "> relational database, which is highly optimized for efficient implementation of network applications, Particularly suitable for large data volumes and high concurrent requests for business logic. By providing unique optimization features, Cubrid can support more concurrent requests, less noise ...

Social media, E-commerce, mobile communications, and machine-machine data exchange make terabytes or even petabytes of data that the enterprise IT department must store and process.   Mastering fragmentation best practices is a very important step in the cloud planning process when users process data for cloud computing databases. Fragmentation is the process of splitting a table into a manageable size disk file. Some highly resilient key-value data stores, such as Amazon simple DB, Google App engine ...

Horizontal expansion technology of cloud service in RDS relational database Aliyun RDS product line Our headquarters--overview--How to use--how to work--current limitations--future work the horizontal expansion technology of cloud service in RDS relational database

Orientdb is an open source, non relational database management system. It is used under general hardware and can be stored at the speed and capacity of 150,000 files per second. It is written in Java and belongs to a document database that supports acid Tx, http://www.aliyun.com/zixun/aggregation/16666.html ">indexes, asynch queries, SQL Layer, clustering, etc., support ...

Orientdb is an open source, non relational database management system. It is used under general hardware and can be stored at the speed and capacity of 150,000 files per second. It is written in Java and belongs to a document database that supports acid tx,http://www.aliyun.com/zixun/aggregation/16666.html ">indexes,asynch queries,sql Layer,clustering and so on, support A ...

Orientdb is an open source, non relational database management system. It is used under general hardware and can be stored at the speed and capacity of 150,000 files per second. It is written in Java and belongs to a document database that supports acid Tx, http://www.aliyun.com/zixun/aggregation/16666.html ">indexes, asynch queries, SQL Layer, clustering, etc., support A ...

Smallsql is a pure Java http://www.aliyun.com/zixun/aggregation/22.html "> Relational database Management system compatible with JDBC 3.0 and ANSI SQL 92/99 specifications." It is a small and fast database engine, but does not provide a network interface. Smallsql is a 100%-pure Java DBMS, an embedded relational database for Java desktop applications ...

"51CTO exclusive feature" 2010 should be remembered, because the SQL will die in the year. This year's relational database is on the go, and this year developers find that they don't need long, laborious construction columns or tables to store data. 2010 will be the starting year for a document database. Although the momentum has been going on for years, now is the age when more and more extensive document databases appear. From cloud-based Amazon to Google, a number of open-source tools, along with the birth of Couchdb and MongoDB. So what ...

Orientdb is an open source, relational database management system that can be stored with the speed and capacity of 150,000 files per second under general hardware. It is written in Java and belongs to a document database that supports acid tx,http://www.aliyun.com/zixun/aggregation/16666.html ">indexes,asynch queries,sql Layer,clustering and so on, support AC ...

Orientdb is an open source, relational database management system that can be stored with the speed and capacity of 150,000 files per second under general hardware. It is written in Java and belongs to a document database that supports acid tx,http://www.aliyun.com/zixun/aggregation/16666.html ">indexes,asynch queries,sql Layer,clustering and so on, support AC ...

Orientdb is an open source, non relational database management system. It is used under general hardware and can be stored at the speed and capacity of 150,000 files per second. It is written in Java and belongs to a document database that supports acid Tx, http://www.aliyun.com/zixun/aggregation/16666.html ">indexes, asynch queries, SQL Layer, clustering, etc., support ...

Htsql an advanced query language and Web Services gateway for http://www.aliyun.com/zixun/aggregation/22.html "> Relational Databases" based on URIs. It encapsulates database access using the WEB service layer and converts HTTP requests to SQL commands and returns query results, in HTML or JSON format. It is equipped with open source database system, such as Mysql,postgresql,sqlite ...

Htsql is a URI based http://www.aliyun.com/zixun/aggregation/22.html "> relational database Advanced Query language that encapsulates database access using the WEB service layer and converts HTTP requests to SQL Command and returns the query result, formatted as HTML or JSON. Htsql 2.1.0-rc1 Update log: Added/:TSV formatter t ...

Cego 2.10.3, some minor problems were corrected and the strength index was introduced. Cego implements a http://www.aliyun.com/zixun/aggregation/22.html "> relational database that supports transactional and SQL query languages, supporting general database functions as well as indexes, views, stored procedures, and so on. CEGO-DBD is an Open-source program that implements the DBD drive for Perl to connect to the Cego database system. Download...

Cego 2.10.8 This version fixes http://www.aliyun.com/zixun/aggregation/18278.html "> data type Conversion errors. Cego implements a relational database that supports transactional and SQL query languages, and supports general database functions as well as indexes, views, stored procedures, and so on. Download Address: http://www.lemke-it.com/cego-2.10.8.tar.gz

Pyrseas provides a framework and tools for updating and maintaining a http://www.aliyun.com/zixun/aggregation/22.html "> relational database that currently contains DBTOYAML tools to create PostgreSQL the description of the table that the Yamltodb tool uses to convert directly from the YAML document to the SQL statement to build the library. It is committed to developing data management tools to complement the process of agile database development. Py ...

Htsql 2.2 rc #1该版本添加了覆盖数据库目录元数据的能力, add table/column/link name Editor auto-complete and add Django integration. Htsql a URI based http://www.aliyun.com/zixun/aggregation/22.html "> relational database of advanced query language, but also a Web service gateway." It is open source, uses the Web service layer to encapsulate database access, and will ...