Copy codeThe Code is as follows: public partial class CMS_DBDataContext
{
Partial void OnCreated ()
{
// Create a database if the database does not exist
If (! This. DatabaseExists ())
{
This. CreateDatabase ();
}
}
}
The following error occurs: the create database
Prerequisite
1. Install Visual Studio or Visual Studio 2013
2, install the Entity Framework Tools for Visual Studio 6.1 or later. Installs the EF reference get Entity Framework.
One, prepare a database
The database in this article is named Blogging.
Second, create an application
For the sake of simplicity, this article creates a console application that accesses
MySQL drop database deleting databases and creating databases Create database
DROP DATABASE [IF EXISTS] Db_nameThe drop database removes all tables from the database, and deletes the databases. If you execute a DROP
How to create a third-party database for Android software development and how to read a database from a file
Original by Yu Song MomoArticleIf you reprint it, please note: Reprinted to my independent domain name blogYusong Momo program Research Institute, Original address: http://www.xuanyusong.com/archives/199
I haven't updated my blog on the andr
First we want to login PHP tutorial (as the current mainstream development language) MyAdmin, do not do demo.
2, create a database tutorial, the following figure, in PHP (as the current mainstream development language) MyAdmin right window, fill in the database name, point creation can.
For example, here we create a
Create a database in the mysql tutorial and delete a database instance
Create database Mysql>Mysql>Mysql> create database myDatabase;Query OK, 1 row affected (0.03 sec)
Mysql>Mysql> dro
MySQL add users, create a new database, user authorization, delete users, modify password (note that each line is followed by the following; Represents the end of a command statement):
1. New User
Login MySQL:@>mysql-u root-p
@> Password
To create a user:mysql> INSERT INTO Mysql.user (Host,user,password) VALUES ("localhost", "Test", Password ("1234"));
This
How to create a database and an independent database account in Mysql. This article introduces phpMyadmin's creation of Mysql databases and independent database accounts, if you do not use the mysql command to create a database, w
Let's Make a concrete demo:
1, first we want to login phpMyAdmin (as the current mainstream development language), do not do demo.
2, create a database, the following figure, in phpMyAdmin (as the current mainstream development language) right window, fill in the database name, point creation can.For example, here we create
For beginners, often do not know how to create a database, the following author as a just beginning to use the Oracle database to introduce you to use the database Configuration Assistant to complete the creation of the concrete steps.
1. Open the Database Configuration A
OracleHow to Create a databaseDATABASE LINKWhat about it? In this article, we will use an instance to introduce the creation process. Next, let's take a look at this process.
Multiple ORACLE databases physically stored in the network can be logically considered as a single large database. Users can access the data in the remote database through the network, the c
Tags: password alt double out SPL ring root Super User OneOnce you have successfully installed and configured the MySQL database server, you need to create a database and database user for your confluence:
Run ' with Superuser in MySQL mysql . The default user is ' root ' and the password is empty.
Tags: confluenceOnce you have successfully installed and configured the MySQL database server, you need to create a database and database user for your confluence:
Run ' with Superuser in MySQL mysql . The default user is ' root ' and the password is empty.
Create an e
In the development process, it is sometimes more efficient to create a database beforehand than to create it when the program is running. For example, you want to write a program that shows the coordinates of the places you've been to. In this case, it is much easier to create a da
Sqliteopenhelper is an abstract class that must write a class to inherit it to use it. Sqliteopenhelper has two abstract methods OnCreate () and Onupgrade (), and we want to override both methods in the class to implement creating and updating the database.The Sqliteopenhelper class also has two important examples of methods Getreadabledatabase and Getwritabledatabase (), both of which can open or create a databas
If the thinkphp model is created, it will automatically generate the database, or you have to manually create the database table thinkphp model, whether it will automatically generate the database, or you have to manually create the data
Use DBCA (database configuration assistant) in linux to create an oracle database and dbcaoracle
Prerequisites: switch to the graphic interface
Go to the bin directory of Oracle and run dbca as the oracle user. The effect is the same as that of windows.
If garbled characters appearExport LANG = "en_US: UTF-8"
How to start oracle
I want to create a database today, because I have always been used to Toad, so I use it to create a database. However, after the database is created, I cannot connect to it. I am prompted that the service is not monitored by the listener. I am helpless, therefore, you can us
Tags: blog http os strong SP file data on 2014After backing up the database file in BAK format from the database, there is always a hint of insufficient space when the local database is welcomed.This is typically a database file backed up from a 64-bit computer and restored to a 32-bit sqlsever.System.Data.SqlClient.Sq
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