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AWS 268-[DF]-Lab - Database Table Operations 3 месяца назад


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AWS 268-[DF]-Lab - Database Table Operations

#AWS 268-[DF]-Lab - Database Table Operations Check out my GitHub Repository - https://github.com/MFMKURIA/AWS-reSta... Task 1: Connect to the Command Host 1. Accessing the AWS Management Console: Go to the AWS Management Console and navigate to EC2 under Compute services. 2. Connecting to the Command Host: Select "Instances" from the left navigation menu. Locate the instance labeled "Command Host" and select the checkbox next to it. Click on "Connect" and choose "Session Manager" tab. Click "Connect" to open a terminal window. 3. Configuring the Terminal: Once connected, run the following commands in the terminal: ```bash sudo su cd /home/ec2-user/ ``` 4. Connecting to MySQL: To connect to the MySQL database instance, use the following command (replace `/password\` with your actual password): ```bash mysql -u root --password='/password\' ``` This command opens the MySQL command-line client where you can execute SQL queries. Task 2: Create a database and a table 1. Creating the `world` Database: To create a new database named `world`, run: ```sql CREATE DATABASE world; ``` 2. Verifying the Database Creation: To verify that the `world` database has been created, run: ```sql SHOW DATABASES; ``` 3. Creating the `country` Table: To create a table named `country` within the `world` database, run: ```sql CREATE TABLE world.country ( `Code` CHAR(3) NOT NULL DEFAULT '', `Name` CHAR(52) NOT NULL DEFAULT '', `Continent` ENUM('Asia','Europe','North America','Africa','Oceania','Antarctica','South America') NOT NULL DEFAULT 'Asia', `Region` CHAR(26) NOT NULL DEFAULT '', `SurfaceArea` FLOAT(10,2) NOT NULL DEFAULT '0.00', `IndepYear` SMALLINT(6) DEFAULT NULL, `Population` INT(11) NOT NULL DEFAULT '0', `LifeExpectancy` FLOAT(3,1) DEFAULT NULL, `GNP` FLOAT(10,2) DEFAULT NULL, `GNPOld` FLOAT(10,2) DEFAULT NULL, `LocalName` CHAR(45) NOT NULL DEFAULT '', `GovernmentForm` CHAR(45) NOT NULL DEFAULT '', `HeadOfState` CHAR(60) DEFAULT NULL, `Capital` INT(11) DEFAULT NULL, `Code2` CHAR(2) NOT NULL DEFAULT '', PRIMARY KEY (`Code`) ); ``` 4. Verifying Table Creation: Switch to the `world` database: ```sql USE world; ``` To list all tables in the `world` database: ```sql SHOW TABLES; ``` 5. Altering the Table (`country`): Correct the misspelled column name `Conitinent` to `Continent`: ```sql ALTER TABLE world.country RENAME COLUMN Conitinent TO Continent; ``` Task 3: Delete a database and tables 1. Dropping the `city` Table (Challenge 1): To drop the `city` table (assuming it exists): ```sql DROP TABLE world.city; ``` 2. Writing a Query to Drop the `country` Table (Challenge 2): To drop the `country` table: ```sql DROP TABLE world.country; ``` 3. Verifying Tables Deletion: To verify that all tables have been dropped: ```sql SHOW TABLES; ``` 4. Dropping the `world` Database: To drop the `world` database: ```sql DROP DATABASE world; ``` 5. Verifying Database Deletion: To verify that the `world` database has been deleted: ```sql SHOW DATABASES; ``` Conclusion By following these steps, you've learned how to: Create databases and tables (`CREATE` statement). View available databases and tables (`SHOW` statement). Alter table structure (`ALTER` statement). Delete databases and tables (`DROP` statement). This completes the lab assignment. If you have any further questions or need clarification on any step, feel free to ask!

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