how to build relational database in mysql

data.SQL: Data management system, the language used to manage the data, Structured Query Language (Structured Query language).why use MySQL? MySQL was developed by MySQL AB in Sweden and is currently a relational database product of Oracle (Oracle) (2008

' student_details ' (' id ' INT PRIMARY KEY auto_increment,' Age ' INT,' Gender ' CHAR (1),' s_id ' INT UNIQUE KEY,FOREIGN KEY (' s_id ') REFERENCES ' student ' (' s_id '));Query OK, 0 rows affected (0.02 sec)```##### Many-to-many relationshipsFor example, students have to enroll in elective courses, one student can enroll in more than one course, and a lot of students enroll in a course, so the student table and curriculum form a many-to-many relationship. For a many-to-many relationship, you

optimization, or called logical optimization and physical optimization 4. Database tuning and Query statement tuning Database tuning can make database applications run faster Its purpose is to make the database by a higher throughput and shorter response time, the object being tuned is the entire

1,mysql Building the database statement is relatively simple, in a word:1 Create Database Tppamltest32, create user and authorization:1 Insert intoMysql.User(Host,User, Password,ssl_cipher,x509_issuer,x509_subject)Values("localhost", "User name", Password ("Password"),"","","");2FlushPrivileges; 3 Grant All Privileges onTppamltest3.* toUser name@localhostIden

Tags: MySQL series of two relational database theorySQL query statement:Sequel-->sqlSQL-86SQl-89SQL-92SQL-99SQL-03SQL-08Part of the SQL language:DdlDmlIntegrity Definition Language: Part of the DDL featureView definitionThings control:Embedded SQL and dynamic sql:Authorization: DCLHow to interact with RDBMS using the programming language:Embedded SQL: Similar to

designed with a minimum of three tables. The relationship between a table and a table is as follows- In MongoDB mode, the design will have a collection with the post following structure- { _id:post_id title:title_of_post, description:post_description, by:post_by, url:url_ Of_post, Tags: [TAG1, TAG2, TAG3], likes:total_likes, comments: [ { User:' comment_by ' , Message:text, datecreated:date_time, like:likes },

The current mainstream relational databases are Oracle, DB2, Microsoft SQL Server, Microsoft Access, MySQL, and so on. Non-relational databases have NOSQL, cloudant. Comparison of NoSQL and relational databases.Advantages:1 Cost: NoSQL database is simple and easy to deploy,

Tags: round Mon Express Medium ratio REM Specifies that the file stores PBS. comThe database is generally divided into two directions: relational databases and non-relational databases. Our common MySQL, Oracle, Sqlserever, and IBMDB2 belong to relational databases, where th

Simple use of Mysql-Cluster-7.5 to build a database cluster, cluster to build Reading directory Preface Several Concepts in mysql cluster Architecture diagram and description Download mysql cluster Before installing

I. Relational database ( SQL):Mysql,Oraclefeatures : There is a relationship between data and data , between Tables and fields , between tables and tablesFor example : Department table 001 section, Employee table 001User table , user name , passwordClassification Table and commodity tables , one -to-many relationships. Advantages :There is a relationship between

1. Create a databaseCreate Database School;2. Using the databaseUse school;3. Create a userCreate user [email protected] identified by ' Jame ';4. Authorized users (Note that this is the use of * Oh, you can speak school also replace the * number)Grant Select,update,insert,create on school.* to [email protected] identified by ' J Ame ';5. Cancellation of authorization (now understand why it is useless to knock privilege directly?) )Revoke select,updat

Tags: MONGO field example mail each add intermediate DDR addressTalk about the difference between relational database and non-relational database the first bomb Take the two most popular databases now: MySQL and MongoDB (a product between

-relational impedance mismatch) Almost all modern programming languages support object-oriented (OO), and when we build an object model with code, we typically use the combination of primitive types (integers, strings, etc.), arrays, and objects. Although the way in which each language handles details is different, the idea of nesting object structures has become a common language that we use to describe "t

CentOS6.5 install mysql cluster7.3.7 to build a mysql database cluster environment (dual-Management Center), centos6.5 install mysqlMySQL Cluster is a technology that allows you to deploy the "in memory" Database Cluster in a non-shared system. Without a shared architecture,

The process of building a slave database based on the existing MySQL master database bitsCN.com Build a slave database based on the existing MySQL master database [Note ]: Host 192.16

CMD command does not answer ";" MySQL command followed by ";" 1. Log in to MySQL as an administrator Mysql-u root–p 2. Select MySQL Database Use MySQL; 3. Create a user and set a password Create user ' t

business is not fixed or often changes relatively large.2. ExtensibilityTraditional relational database gives people a kind of horizontal extension difficult, not good for data fragmentation, and some non-relational database natively support the level of data expansion (such as MongoDB sharding mechanism), and this is

/uploads/2015/07 /8.png "alt=" 8 "width=" 698 "height=" 545 "style=" border:0px;height:auto;margin-bottom:12px; "/>7 Let's delete a record (Erase yourself!!) ）mysql> delete from chengyuan where id="1";650) this.width=650; "class=" Alignnone size-full wp-image-45 "src=" http://www.prozhi.com/wp-content/uploads/2015/07 /9.png "alt=" 9 "width=" 698 "height=" 545 "style=" border:0px;height:auto;margin-bottom:12px; "/>You can empty the entire table with th

08:30------09:00------12:00FTP server: 172.40.50.117 7000Software Softpackage/mysqlNote NSD1710/Course NamePractice HomeworkPangli Silent TeacherStage four:Database Management 7-day DBASecurity and Monitoring 6-day IDC monitoringCluster and storage 5 days+++++++++++++++++++++Database management:A database serverBasic management of MySQL

Build a MySQL master/slave database bitsCN.com using the local environment Build a MySQL master/slave database using the local environment First, let's introduce my configuration environment. On the local machine, the IP address