Neo4j Database

"Editor's note" with the development of the Internet, users from the previous "read" Web page into the "write" page, the Internet has generated a large number of users to participate in, for such as people, events, products and other valuable comments, and as the network commented on the growth of information explosion, It is difficult to deal with the collection and processing of the massive comment information by the manual method, and the emotion analysis technology comes into being, this article takes the movie film review as an example, uses neo4j to carry on the deep study emotion analysis to the movie commentary. A movie review site allows users to submit comments about whether they are interested in a movie or dislike the relevant information ...

It was easy to choose a database two or three years ago. Well-funded companies will choose Oracle databases, and companies that use Microsoft products are usually SQL Server, while budget-less companies will choose MySQL. Now, however, the situation is much different. In the last two or three years, many companies have launched their own Open-source projects to store information. In many cases, these projects discard traditional relational database guidelines. Many people refer to these items as NoSQL, the abbreviation for "not only SQL." Although some NoSQL number ...

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 ...

Naresh Kumar, a software engineer and enthusiastic blogger, has great interest in programming and new things, and is happy to share technical research results with other developers and programmers. 　　Recently, Naresh wrote about 12 well-known free, open source NoSQL databases, and analyzed the characteristics of these databases. Now that the NoSQL database is becoming more and more popular, I'm here to summarize some of the great, free and open source NoSQL databases. In these databases, MongoDB the top, with considerable ...

Global virtualization and cloud Infrastructure leader VMware (NYSE trading Code: VMW) announced a new database opening and operation solution at VMworld 2011, which aims to bring an enterprise a service model of database and service. As an extension of the VMware Cloud application platform strategy, VMware vfabric Data director will provide it with the ability to control and manage an increasing number of heterogeneous databases through policy-based automation, and through self-service provisioning patterns for developers ...

Guide: Mike Loukides is the vice president of the content strategy of O ' Reilly Media, and he is very interested in programming languages and UNIX system management, with system configured tuning and UNIX power Tools. In this article, Mike Loukides put forward his insightful insights into nosql and thought deeply about all aspects of modern database architecture. In a conversation last year, Basho, CTO of the company, Justin Sheehy, recognized ...

1. Languages used in COUCHDB: Erlang features: DB consistency, easy to use license: Apache protocol: http/rest bidirectional data replication, continuous or temporary processing, processing with conflict checking, therefore, The use of Master-master replication (see note 2) mvcc– write without blocking read operation Pre-save version crash-only (reliable) design requires data compression view: Embedded mapping/Reduce formatted view: List display support for server ...

Comparison of 8 kinds of NoSQL database system: Kristóf Kovács Editor: Agile translation: Tang Yuhua share: More: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases. The article is compiled by Agile translation-Tang Yuhua. If you want to reprint, please refer to the text after the declaration. Although SQL database is very useful ...

In the past few years, relational databases have been the only choice for data persistence, and data workers are considering only filtering in these traditional databases, such as SQL Server, Oracle, or MySQL. Even make some default choices, such as using. NET will typically choose SQL Server, and Java may be biased toward Oracle,ruby, Mysql,python is PostgreSQL or MySQL, and so on. The reason is simple: In the past a long time, the relational database is robust ...

Graphic database is a kind of non relational database, it applies graph theory to store the relation information between entities. The most common example is the http://www.aliyun.com/zixun/aggregation/7518.html "> Relationship between people" in social networks. Relational databases are not good for storing "relational" data, their queries are complex, slow, and beyond expectations, and the unique design of a graphics database compensates for this flaw. Google's graphics computing system named PR ...