nosql vs relational

Kristóf Kovács, a software architect and consultant, recently released an article comparing various types of NoSQL databases. Although the SQL database is a very useful tool, the monopoly is about to be broken after a 15-year solo show. It was only a matter of time: forced to use relational databases, but found that the inability to adapt to demand was too numerous. But the differences between the

Tags: nosql NoSQL Basic Concepts and MongoDB MongoDB Basic Application MongoDB Index and copy set The concept of database sharding and the realization of MongoDB sharding I. The basic concept of NoSQLNoSQL (not just SQL), is a technical genre, non-relational database; it is one o

Comparison and Analysis of eight common NoSQL Database Systems Krist óf kolács is a software architect and consultant who recently published an article comparing various NoSQL databases. Although SQL database is a very useful tool, after 15 years of outstanding performance, the monopoly will be broken. This is only a matter of time: I was forced to use relational

As we all know, relational data types have always been one of SQL's criticism. With the increasing variety of data, the conversion from various data types to relational data types has plagued most SQL database users. However, the advantages of SQL databases are undeniable. If you can have both the fish and the bear's paw-implementing nosql Data Types in the SQL d

KristfKovcs, a software architect and consultant who once worked in a number of major companies, blogs on mainstream NoSQL databases (Cassandra, Mongodb, CouchDB, Redis, Riak, Membase, Neo4j, and HBase) A comprehensive comparison was conducted. Although SQL database is very useful NoSQL Krist ófskács, a software architect and consultant who once worked in a number of major companies, blogs on mainstream

Tags: style blog http color io os ar using JavaGuide: Kristóf Kovács is a software architect and consultant who recently published an article comparing various types of NoSQL databases. Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a matter of time: forced to use relational databases, but eventually found to be unable to adapt t

Source: http://www.cnblogs.com/mokafamily/p/4076954.htmlThe explosive development of NoSQL technology　　For a long time in the past, relational databases (relational database Management System) have been the most mainstream database solution, He uses things and relationships in the real world to explain the abstract data architecture in the database. However, in t

Http://db-engines.com/en/rankingTransferred from: http://www.cnblogs.com/mokafamily/p/4076954.htmlThe explosive development of NoSQL technology　　For a long time in the past, relational databases (relational database Management System) have been the most mainstream database solution, He uses things and relationships in the real world to explain the abstract data a

way, and repetition is for less interaction;Disadvantages The aggregation structure is advantageous to some interactions, but hinders other interactions;For example, when the student ID is used to aggregate student information (including student name, class, age, and other information, or even English scores, all the information of the student can be queried in an interaction, but it is very difficult to query it by the Student name; ACID transactions that span multiple aggregates are n

Label:1. A Brief History of NoSQLThe term NoSQL first appeared in 1998 and is a lightweight, open source, relational database that does not provide SQL functionality developed by Carlo Strozzi. In 2009, Last.fm's Johan Oskarsson launched a discussion on a distributed open source database [2], and Eric Evans from Rackspace again proposed the concept of NoSQL, when

The scalability of NoSQL systems is the main reason for the development of NoSQL, including distributed system coordination, failover, resource management and many other features. In this case, NoSQL sounds like a big basket, and everything can be inserted. Although the NoSQL movement has not brought about fundamental

in many systems that provide strong consistency assurance (such as most relational databases, HBase, and MongoDB ). Conflict Detection. The Database tracks the conflicts of concurrent updates, and chooses to roll back one of them or maintain two versions to the client for resolution. Concurrent updates are usually tracked using a vector clock (which is an optimistic lock), or a complete version history is maintained. This method is used for Riak, Vol

Label:Original: http://juliashine.com/distributed-algorithms-in-nosql-databases/ A distributed algorithm for NoSQL databasesOn November 9, 2012 in also for rice beam, by Juliashine This article was translated from distributed algorithms in NoSQL Databases The scalability of the system is the main reason for the development of the

Tags: phone together to indicate should family enterprise one thing tuple div2.1 Structure of the relational database A relational database consists of a set of tables, each of which is assigned a unique name. For example, consider the instructor table in Figure 2.1, which stores information about instructors. This table has four columns, namely ID, name, dept_name, salary. Each line of the form records the

database is less suitable in these more and more application scenarios, and the non-relational database to solve this kind of problem arises . NoSQL is a generalized definition of non-relational data storage. It breaks the unification of long-term relational database and acid theory .

The first part: Concept 1, why use NoSQLImpedance detuning: The difference between the relational model of a relational database and the data structure in memory.Integration Database : Multiple applications that are typically developed by different teams store their data in a common database.application Database : Its contents can only be accessed directly from the code base of one application, and this cod

Although SQL database is a very useful tool, the monopoly is about to be broken after 15 years of a single show. This is only a matter of time: forced to use relational databases, but eventually found to be unable to adapt to the needs of the numerous.But the difference between NoSQL databases is far more than two of the differences between SQL databases. This means that the Software architect should choose