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How do you create a TABLE in MySQL?
To create a table in MySQL you will need to use the CREATE TABLE function. This is simple enough to use, a simple example of creating a users table is below, it has a unique id (Primary Key) with a unique username and a password field (which I would recommend storing as an MD5). CREATE TABLE users (id INT( 10 ) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY , username VARCHAR( 16 ) NOT NULL , password CHAR( 32 ) NOT NULL , UNIQUE ( username ) );
What is meant by Unique key?
unique key
How the primary key is declared in MySQL?
Its best to choose an ID for each table to use as the Primary Key (PK). This is best as an INT due to speed.
Is MySQL open source?
Yes, MySQL is open source and is free to download and install. You can use the MySQL Installer to install and configure MySQL server on Windows operating system. It provides a simplified installation and configuration process for MySQL products running on Microsoft Windows. The list of MySQL products includes the following items: MySQL Server MySQL Workbench MySQL Router MySQL Shell MySQL for Visual Studio MySQL Reference Manuals PDF MySQL connectors (MySQL/Python connector, MySQL/NET connector, etc.) MySQL database examples. To get started with MySQL database easily, you can use the comprehensive solution provided by dbForge Studio for MySQL, which allows you to efficiently process data and automate the management of your database objects.
What is a primary key that is null?
Unique key
Can unique key be null?
No unique can not be nulll....unique must have any unique value for unique identification.,...
Is it possible to set a default values to a primary key which is auto increment?
In Mysql: No You will get error :Invalid default value for 'id'
What not a likely primary key?
A field that is not unique and null can not be used as a primary key. Praimary key must satisfy the conditions of not null and unique.
Is MySQL a server?
MySQL is an open source relational database management system based on SQL queries. It was developed by the Swedish company MySQL AB and is now a subsidiary of Oracle Corporation. Your could use a MySQL Client, for example dbForge Studio for MySQL, to install and connect to MySQL Server as a first steps to get started with MySQL.
What is MySQL AB?
MySQL AB's population is 400.
Candidate key and primary key differnece?
All Primary keys are definitely Candidate Keys. A Candidate key is one which can be used as a Primary key that is not null and unique. That is one of the candidate keys can be chosen as a primary key.A Candidate key is a Unique Key and it can be used to find out any particular Tuple (row) in a table. The following are the differences between A Candidate key and a Primary Key: 1) A Unique key can be null but not a Primary key 2) On a table we can have only 1 primary key but 'N' number of unique keys.
What is the logo of MySQL?
The MySQL logo is made up of the world MySQL and it has a dolphin jumping upwards on the right side.
