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Creating a copy of an existing database is known as the MySQL Clonemethod. Cloning involves creating a copy of the table structure, constraints, functions, procedures, triggers, and all functionality associated with the table in one go.

These features make it more reliable for users, as even if one node fails, the replica or clone can still provide services. Making database copies and clones can help when unexpected loss or failure occurs.

The backup process can be done daily or at specific intervals. The method to replicate a database on the same server instance is as follows.

Copying a database on the same server instance in MySQL

Copy the source database into a SQL script file. Create a new target database and then import the SQL script file into the new database.

This is a three-step process.

> 	mysql -u root -p
	****
>	mysqldump -u root -p firstDb > firstDbDump.sql
>	create database newDb;
>	mysql -u root -p newDb < firstdump.sql
> 	show databases;
> 	use newDb;
>	show tables;

The detailed description and commands of the first method above are as follows.

1. To proceed with the first method, install MySQL server 8.0 in your local system.

2. Continue with the installation process and after successful installation, reach binthe path.

3. Open the environment variables and add the path to the MySQL system in the system PATH variable. It allows access to MySQL from anywhere in the file system.

4. Open a command prompt and enter the command shown above. This command enables the use of the MySQL prompt.

   -uThe attribute specifies the username that executes the value; rootit is the username. -pThe attribute specifies the password, which is located on another line.

   The password is never added to the command. It appears in encrypted format on another line.

5. Enter the command to copy the files from this location to a temporary intermediate file.

6. mysqldump -u root -p database_name_to_be_cloned > filename_for_cloneis mysqldumpthe command to specify the utility, with the username and password as options.

   It takes a database name as a parameter and places the dump file into a file. >The parameter directs the output to a specific file.

7. If no absolute file path is provided for the file name, the SQL file will be stored in the directory where the MySQL server is installed bin.

8. Create a new database into which the SQL should be imported to clone the existing database.

9. Once a temporary or intermediate file is formed, it can <be read again into the newly formed database using the operator. The operator redirects SQL results into newDbthe database.

10. You can check the databases using the command show databases;. This command will list all databases in the current SQL connection.

11. useThe use command allows the user to use the specified database. The use command takes as an argument the database name.

12. show tablesAllows the user to list all the tables present in the database. Therefore, the last three commands can be used to check what was replicated.

|Using the or pipe operator to duplicate commands in MySQL

One line command takes the dump of a source database and redirects it to another target database.

> mysqldump -u root -p sourceDb | mysql -u root -p targetDb

1. binNavigate to the folder where you installed MySQL .

2. Open a command prompt from binthe folder.

3. Use the above command to create the source database and target database separately in advance.

4. This command mysqldumpcreates a SQL dump using the SQL Server 2003 R2 SQL Server 2003 utility, with username and password as mandatory options. And the output is redirected to another target database.

5. |The pipe symbol is primarily a LINUX/UNIX command operator that allows the user to use two or more commands in one line.

   It acts as a pipe, feeding the output of the first command to another command. The second command is usually separated using the pipe symbol.

6. The command is the same as described in method one and uses the pipe symbol on one line.

Attached is a screenshot of the above command being executed successfully.

When we enter the above command, it prompts the user to enter the password twice. According to the command here, -pthe option is mentioned twice, requiring the user to enter the password for both the databases.