tabular database vs relational database

Source: http://www.cnblogs.com/chay1227/archive/2013/03/17/2964020.htmlThe relational database represents all of the data through the two-dollar representation of rows and columns.The benefits of a relational database:1. Maintain data consistency (transaction processing)2. Due to standardization, the cost of updating d

Tags: and EXT structure Publishing NAT process name Data Model operationsThe SQL (Structured Query Language) database is the primary way to store data over the past 40 years. The late 1990s with the rise of Web applications and open-source databases such as MySQL, PostgreSQL, and SQLite, the explosion of user growth. NoSQL databases have been in existence since the 1960s and have gained more attention until the popularity of databases such as MongoDB,

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 dat

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

Label:A collection of all relationships that correspond to a relational model is called a relational database. In a relational model, relationships between entities and entities are expressed in relation to each other. For example, the relationships between teachers, students, courses, lectures, and learning in example

Since the introduction of the relational database model by edugatd in 1970, relational databases began to emerge. After more than 40 years of evolution, today's relational databases have a wide variety of features and are widely used. In the face of so many relational databa

completed, different link modes can be obtained. That is to say, the decomposition method is not unique. The Minimum Redundancy must be achieved on the premise that the decomposed database can express the confidence of the original database. Its fundamental goal is to save storage space, avoid data inconsistency, improve the efficiency of relational operations,

. Since the end of the 60, has now developed to IMSV6, providing clustering, n-channel data sharing, message queue sharing and other advanced features of support. This 30-year-old database product plays a new role in today's WWW application connection and business intelligence applications. What is a genome sequence database? Gsdb is a genome sequence database

Tags: implementation mechanism originally page organizes tables based on free article content index ClustFollowing the book on SQL tuning (SQL tuning or SQL optimization) in the essentials of high-performance SQL tuning and case resolution, we talk today about one of the most important core mechanisms of SQL tuning technology and half of the work-index (index) in every major relational repository. We know that "high-performance SQL Tuning essentials a

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 the explosive

Label: byLessHttp://blog.csdn.net/shendl The design of relational database table structure has the following two design techniques: The physical primary key, as the associated foreign key relational database, is composed of multiple data tables. The structure of each data table is the same, and there may be associati

Mysql database learning (1): Basic Concepts of databases, relational databases, Mysql database installation and configuration, and DDLDCLDML statements bitsCN.com I. basic concepts of databases Database (DB) Warehouses that organize and store data according to the data structure

Abstract Yes: Workflow technology is one of the core technologies in office automation systems. Based on the features of the workflow in document flow, this paper analyzes the document flow data model established in the relational database, and provides the implementation method of the Document Flow System Based on this data model. 1. Introduction Office automation is a new office method that combines moder

NoSQL (not-only SQL) non-relational databasecomparison between relational database and non-relational database :Common relational databases: MySQL, Oracle, SQL ServerA relational

With the development of relational databases, it has been nearly 40 years since the theory of relational models was proposed, the development of SQL query language, the establishment of performance tuning theory, and the maturity and prevalence of productization, IBM DB2, which claims to inherit this "conventional", has been in this history for 25 years. If the predecessor of DB2 SQL/DS is not included, ora

My understanding of relational database design paradigm The so-called paradigm, is the standard of relational database relational model normalization, from the standardized relaxed to strict, respectively for different paradigms, usually used in the first normal form, the s

Relational Database design paradigm Introduction The relationships in relational databases must meet certain requirements, that is, they must meet different paradigms. Currently, relational databases have six paradigms: 1nf, 2nf, 3nf, 4nf, and 5nf) and the sixth paradigm (6nf ). The first paradigm (1nf) meets the minim

-written transaction log, which is written on the transaction log before committing the data to the actual data page. Four. Consistency Consistency means that the integrity constraints of a database are not compromised until the start of the transaction and after the transaction has ended. This means that database transactions do not break the integrity of relational