I. Introduction to JDBC
JDBC (Java DataBase Connectivity) is a Java API for executing SQL statements, which can provide unified access to a variety of relational databases. It consists of a group of classes and interfaces written in Java language. The basic steps to access the database using JDBC are as follows:
1. Load JDBC Driver
2. Establ ...
Posted on Wed, 20 Nov 2019 11:12:51 -0500 by jimmy patel
Original link: Save the specified id of JPA in 191119 spring boot series
A few days ago, a little friend asked a very interesting question. When using JPA to save data, even if I specified the primary key id, the newly inserted primary key of data is the self increasing id of mysql. So what is the cause? How can we solve it?
This article will ...
Posted on Wed, 20 Nov 2019 08:57:12 -0500 by DarkShadowWing
Access MySQL database with C and execute simple CRUD.
MySql.Data.dll is the driver file for C ා to operate mysql. It is a necessary plug-in for C ා to connect mysql, making C ා language operate MySQL database more succinctly. You can use NuGet command to install PM > install package mysql.data - version 8.0.16
Add a reference to this compo ...
Posted on Tue, 19 Nov 2019 16:41:16 -0500 by CyberShot
Shell enterprise programming foundation
When it comes to shell programming, many friends who are engaged in Linux operation and maintenance work are familiar with shell and have a basic understanding of shell. Readers may have a variety of ideas when they first contact shell, and feel that programming is very difficult. Shell programming is th ...
Posted on Tue, 19 Nov 2019 06:14:40 -0500 by fotakis
Three ways of integration:
1. LocalEntityManagerFactoryBean: it is applicable to those projects that only use JPA for data access. The FactoryBean will work according to the JPA PersistenceProvider automatic detection configuration file. Generally, the configuration information is read from "META-INF/persistence.xml& ...
Posted on Mon, 18 Nov 2019 13:45:50 -0500 by phpfolk2003
android simulator ADT links to local database Mysql
1. Create a new link database thread and insert data into the database to view the link effectNote that if you only test the link ip between the simulator and the local database MySQl, you can directly fill in 10.0.2.2ip can be directly filled in 10.0.2.2ip can be directly f ...
Posted on Mon, 18 Nov 2019 12:45:48 -0500 by davitz38
Manual compilation and installation of MYSQL
1. Get the installation package from the host with samba service
[root@localhost ~]# mount.cifs //192.168.10.28/share /mnt
Password for root@//192.168.10.28/share:
[root@localhost ~]# cd /mnt/LNMP/
[root@localhost LNMP]# ls
Discuz_X3.4_SC_UTF8.zip mysql-boost-5.7.20.tar.gz nginx-1.12.2.tar.gz p ...
Posted on Mon, 18 Nov 2019 11:33:55 -0500 by eirikol
After sorting out the functions, we can start the database table design:
Database table diagram:
First, open Navicat Premium to create a database blog
The configuration is as follows:
First, create mysql.js to configure MySQL connection (based on Sequelize)
var config = require('config-lite');//Introducing flexible pro ...
Posted on Mon, 18 Nov 2019 09:27:06 -0500 by clio-stylers
Since the development of FreeSql project on November 28, 2018, the version has been released to v0.3.12. Version rule: number of years month day version number of the day. At present, it mainly includes the maintenance and development of FreeSql and FreeSql.Repository. This article introduces some intimate functions.
Error: the incoming reques ...
Posted on Mon, 18 Nov 2019 04:54:46 -0500 by songwind
New year is coming, the technical content of the home page is really less and less. I understand that you are looking forward to a holiday for the new year, my friend, I would like to pay you a visit to the early years.
Brother, I got nervous from the end of November and started the development tour of ORM functional library. It took two mont ...