Tag：account
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Time：2020-7-27
Application of functional programming in front end privilege management What is the solution This paper is mainly my own summary in the actual business development, and I hope to discuss it with you. First of all, introduce the business background What we developed is a set of 2B enterprise training SaaS system. Enterprises can train […]
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Time：2020-7-23
Problem: Scott user imports DMP file and prompts that he does not have DBA permission. resolvent: 1. Grant DBA role permission: grant dba to scott; 2. Import data: imp scott/[email protected] file=G:\ac43_620.dmp full=y 3. Cancel DBA role permission: revoke dba from scott; In addition, Scott’s account was originally locked. Lock account: alter user scott account […]
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Time：2020-7-22
After talking about the configuration and use of a series of services under Linux, this paper briefly introduces a database management system (the brother of MySQL), MariaDB. If you have experience with MySQL or other data, MariaDB will be very easy to use. This article explains the default data MariaDB of centos7. As it is […]
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Time：2020-7-22
In the back-end language learning or finishing design, it is inevitable to use the database in the development of the project. After working hard on the project, I found that I could only watch it by myself,At this time, we want to publicize our achievements. We can’t do without the link of online. The conventional […]
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Time：2020-7-11
1. Table relation description In this case, there are three entity tables and one relationship table: user table, account table, role table and user role relationship table. The relationship between the tables is as follows: An account can only belong to one user (of course, multiple accounts can belong to one user, but from the […]
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Time：2020-7-7
In any relational database, acid is an important part of the database and a set of attributes of database transactions. The purpose of this feature is to ensure the validity of database data under abnormal conditions. Database acid properties A（Atomicity）Atomicity: Transactions usually consist of multiple statements. Atomicity guarantees that each transaction is treated as a […]
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Time：2020-7-1
Author: Geir hoydalsvikTranslator: Guan ChanglongOriginal text: https://mysqlserverteam.com/t… The MySQL development team is pleased to announce that MySQL 8.0.19 is now available from dev.mysql.com Download. In addition to bug fixes, some new features have been added to this release.The following is the key introduction! InnoDB ReplicaSet Following InnoDB cluster as our first fully integrated MySQL HA […]
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Time：2020-6-29
Installation environment and version: System: Ubuntu 18.04 LTSGitlab: latest version Install and configure necessary dependencies sudo apt-get updatesudo apt-get install -y curl openssh-server ca-certificates Second, add gitlab software package repository and install software package Add gitlab package repository curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.deb.sh | sudo bashInstall gitlab package. And set the access address of gitlab to https://localhost ‘ […]
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Time：2020-6-20
Installation instructions wget http://repo.mysql.com/mysql57-community-release-el7-8.noarch.rpm rpm -ivh mysql57-community-release-el7-8.noarch.rpm yum -y install mysql-server Start MySQL systemctl start mysqld.service Check whether the service is started successfully systemctl status mysqld.service Get the default MySQL root password grep “password” /var/log/mysqld.log Log in to MySQL mysql -u root -p Change root password alter user ‘root’@’localhost’ identified by ‘xxx’; Let MySQL receive […]
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Time：2020-6-18
1、 Make sure your project folder generates. Git If there is no 1.git init // to initialize an empty source 2. Git add. / all the contents of the directory are added to the source 2、 First of all, you must have an account of GitHub. If you don’t have one, you need to register […]
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Time：2020-6-13
1 demand Now there is a menu table. There are both primary menu and secondary menu saved in the menu. The ID field of the parent menu of the primary menu is null, and the ID field of the parent menu of the secondary menu saves the ID of its parent menu. In Java, a […]
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Time：2020-6-12
introduction The recent use of MVC mode is really irresistible, but also leads to a series of problems: high coupling.When each program ape talks about how to design a program, he basically opens his mouth: high concurrency, low coupling, high cohesionSo the question is, what is coupling? How to achieve low coupling? coupling Coupling is […]
