What are the default options of MySQL server?


There is no default database. A fresh MySQL server install will have 0 databases. The install script will run mysql_install_db after the server is running to create a mysql database, which MySQL uses to store users and privileges.

What is default MySQL server?

There is no default database. A fresh MySQL server install will have 0 databases. The install script will run mysql_install_db after the server is running to create a mysql database, which MySQL uses to store users and privileges.

What is option in MySQL?

Most MySQL programs can read startup options from option files (sometimes called configuration files). Option files provide a convenient way to specify commonly used options so that they need not be entered on the command line each time you run a program.

Where are MySQL databases stored by default?

Typically, MySQL will store data in the default directory of /var/lib/mysql.

Which MySQL function gives the default database name?

The DATABASE() function returns the name of the current database. If there is no current database, this function returns NULL or “”.

What is default null in MySQL?

If a data type specification includes no explicit DEFAULT value, MySQL determines the default value as follows: If the column can take NULL as a value, the column is defined with an explicit DEFAULT NULL clause. If the column cannot take NULL as a value, MySQL defines the column with no explicit DEFAULT clause.

How do I set a default database in MySQL?

To set a default schema for multiple MySQL Workbench sessions, you must set the default schema for the stored connection. From the home screen, right-click on a MySQL connection, choose Edit Connection, and set the desired default schema on the Default Schema box.

What is MySQL root?

Running MySQL as Root means that everything the server does is also done with root privileges. If you happen to make a mistake, this can cause problems: if you misconfigure the MySQL logfile to /etc/passwd, then that important file will probably be overwritten (a normal user can’t do that)

What is the default path of data folder?

What is configuration file of MySQL?

Most MySQL programs can read startup options from option files (sometimes called configuration files). Option files provide a convenient way to specify commonly used options so that they need not be entered on the command line each time you run a program.

What is the default data directory of MySQL in Linux?

By default, the datadir is set to /var/lib/mysql in the /etc/mysql/mysql.

What is the default username and password for MySQL?

The default user for MySQL is root and by default it has no password. If you set a password for MySQL and you can’t recall it, you can always reset it and choose another one.

How many types of functions are there in MySQL?

There are two types of SQL functions, aggregate functions, and scalar(non-aggregate) functions. Aggregate functions operate on many records and produce a summary, works with GROUP BY whereas non-aggregate functions operate on each record independently.

What is user () in MySQL?

The USER() function returns the current user name and host name for the MySQL connection. Note: This function is equal to the SESSION_USER() function and the SYSTEM_USER() function.

How do I log into MySQL server?

Enter mysql.exe -uroot -p , and MySQL will launch using the root user. MySQL will prompt you for your password. Enter the password from the user account you specified with the –u tag, and you’ll connect to the MySQL server.

What is the difference between utf8 and utf8mb4?

The difference between utf8 and utf8mb4 is that the former can only store 3 byte characters, while the latter can store 4 byte characters. In Unicode terms, utf8 can only store characters in the Basic Multilingual Plane, while utf8mb4 can store any Unicode character.

What is MySQL root user?

Normally, you access each MySQL database using a separate database user. In some cases—such as accessing many different databases from the command line—it is easier to have a single MySQL account that can access any database. This privileged MySQL account is the MySQL root user.

What is default value database?

Default values, in the context of databases, are preset values defined for a column type. Default values are used when many records hold similar data.

Is default NULL necessary?

No, it isn’t necessary because without adding DEFAULT NULL, it gives NULL value. For example, let’s say you haven’t added DEFAULT NULL and inserted a record with no value, then the result would display the NULL value as the inserted value.

Is schema and database same in MySQL?

In MySQL, schema is synonymous with database. As the query is written to create the database, similarly the query can be written to create the schema. Logical structure can be used by the schema to store data while memory component can be used by the database to store data.

What is root password in MySQL?

The root password allows a user to perform all top-level functions in the database. If you’ve never set a root password on your MySQL database, you should be able to connect to it. However, this is not a good security practice as anyone can access your database.

What is the password for root?

The root password interface provides the ability to maintain system security by changing the default password for the root user of the Unitrends system. The default password is “unitrends1”. It is highly recommended that you change this password from the default.

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