nosql wikipedia

10 things you should know about NoSQL Databases Since the 1/4 century, relational databases (RDBMS) have been the mainstream database models. But now non-relational databases, "Cloud" or "NoSQL" databases, are gaining an increasing share as an alternative database model. In this article, we will focus on the 10 key features of non-relational NoSQL databases: the

NoSQL Basic LearningThe first nosql to learn recently is MongoDB, in order to understand the basics of nosql, to summarize, mainly to learn the theory of NoSQLI. Introduction (INTRODUCTION)It is the abbreviation of "not only SQL", non-relational database, it has very good versatility and very high performance, it has the advantage in processing a large amount of

Label:I had always thought that NoSQL was easy to understand and I had a very thorough study of nosql myself, but in the recent preparation of the yuntable chart, I found that NoSQL was not only very profound, but also my personal understanding of NoSQL was just fur. But I am a "shame and then brave" people, so after a

This article focuses on some of the things that are nosql, and the difference between the three databases of NoSQL, Memchache, MongoDB, and the ones that are more popular in the series. Here is the reading directory of this article, a NoSQL introduction1.Nosql IntroductionThe difference between the characteristics of 2

With more than 10 years of architecture and development experience in C ++ and JavaJEE, MichaelKopp specializes in the architecture and performance of large-scale product deployment. Traditional enterprise database providers often propose that NoSQL lacks professional monitoring and management tools. Their argument is that enterprise applications need to fine tune and monitor Databases Michael Kopp has more than 10 years of architecture and developmen

The difference between NoSQL and NoSQL is much greater than the difference between different SQL databases. Therefore, software architects must select a suitable NoSQL from the very beginning of the project. The difference between NoSQL and NoSQL is much greater than that be

of hundreds of billions of rows and hundreds of billions of columns. When talking about the data scale, we have to say that in the NoSQL market, the four most popular NoSQL systems are MongoDB, Redis, Cassandra, and HBase. We know that both Cassandra and HBase are BigTable systems and are well-known (with strong support from Facebook, Yahoo, and Twitter ). So why is MongoDB the most popular? Is HBase not g

. Delete secondary indexes of a table, rewrite the query so that it only uses the primary key index; 7. Database sharding; this method is complex and costly to maintain; and it is costly to re-split when the data size increases again, limited secondary scalability; Ii. RDBMS and NoSQLIn actual use, as long as the architecture is proper, relational databases can fully serve various levels of data storage applications, for example, Facebook and Google each have a well-running MySQL server cluster

large-scale SNS website, the daily user generates a huge amount of user dynamics, taking foreign friendfeed as an example, one months to reach 250 million user dynamics, for the relational database, in a 250 million records of the surface of the SQL query, the efficiency is extremely low even intolerable. 3. High Scalability hi availability-requirements for database scalability and high availability Currently Sina Weibo's Redis and Google's BigTable and Amazon's simpledb are using

NoSQL database This concept for a long time, but also see a lot of companies and products are in use, the pros and cons seem to be analyzed clearly. But there is a doubt in my mind, what is its appearance in order to solve the problem?User Information table, book information table, user Rating Information table for the book, comment form.Now imagine to do a page that shows the content of the comments, there will be information about the user and relat

Tags: using os data problem ardiv work time Introduction to the NoSQL Database Chapter 1th Basics of NoSQL Databases 11.1 relational and NoSQL databases 21.1.1 What is a brief history of NoSQL 21.1.2 relational database 21.1.3 database classification 31.1.4 relational database Advantages of 51.1.5 relational databa

For every web and mobile application that focuses on the user experience, memory-based NoSQL storage systems such as open source Redis and memcached are becoming de facto standards. However, in recent years, the use of these databases by large enterprises has been slow, due mainly to performance, scalability and availability challenges. Fortunately, the modern programming language (Ruby, Node.js and Python, as well as development platforms (Rails,sin

Advantages and disadvantages of relational databaseAdvantages: Can do transaction processing, so as to ensure the consistency of data; Can be a join, such as multi-table query; Because of SQL standardization, the cost of data updates is small (the same fields are basically only one place). Disadvantages: The write processing of large amount of data is not easy; If the table data volume is too large, it is not easy to do index or table structure update; When the field is

Deep nosqlBasic InformationOriginal Title: Professional nosqlAuthor: (printed) Tiffany [Translator's introduction]Translator: juchengPress: People's post and telecommunications PressISBN: 9787115296382Mounting time:Published on: February 1, November 2012Start: 16Page number: 1Version: 1-1Category: Computer> database> SQL language For more information, see deep nosql. IntroductionBooksComputer booksDeep nosql