MariaDB/MySQL

port: 3306

What is MariaDB?

MariaDB is an open-source relational database management system (RDBMS) that is a fork of MySQL. It was created by the original developers of MySQL after concerns arose over Oracle Corporation's acquisition of MySQL. MariaDB aims to maintain high compatibility with MySQL, ensuring that users and applications can easily transition from MySQL to MariaDB without significant changes.

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Installation

Install MariaDB

sudo apt install mariadb-server

Enable MariaDB

sudo systemctl enable mariadb

Start MariaDB

sudo systemctl start mariadb

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Connect to MariaDB

Local

mysql -u root -pP4SSw0rd -h 10.129.14.128

Remote

mysql -h <Hostname> -u root
mysql -h <Hostname> -u root@localhost

-u : user -p : password -h : host ip

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Footprinting

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Commands

Start

show databases;    # see all databases on the device
use <database>;    # use a database
connect <database>;    # 
show tables;    # display tables in current database
describe <table_name>;    # see detailed info about the table
show columns from <table>;    # see detailed info about table  

Create Table

CREATE TABLE <table name> (
    <Column Name> <Type>,
    <Column Name> <Type>
);

column datatypes:

VARCHAR(50) : INT : DATETIME : REAL :

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Example

CREATE TABLE SHIPS (
    NAME VARCHAR(50),
    CLASS VARCHAR(50),
    LAUNCHED INT
);

CREATE TABLE BATTLES (
    NAME VARCHAR(50),
    DATE DATETIME
);

CREATE TABLE CLASSES (
    CLASS VARCHAR(50),
    TYPE VARCHAR(2),
    COUNTRY VARCHAR(20),
    NUMGUNS INT,
    BORE REAL,
    DISPLACEMENT INT
);

CREATE TABLE OUTCOMES (
    SHIP VARCHAR(50),
    BATTLE VARCHAR(50),
    RESULT VARCHAR(10)
);

Insert In Tables

INSERT INTO <table_name> (<column>, <column>, <column>) VALUES
('values', 'values', values),
('values', 'values', values),
('values', 'values', values);

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Example:

INSERT INTO SHIPS (NAME, CLASS, LAUNCHED) VALUES
('USS Constitution', 'Constitution', 1797),
('HMS Victory', 'Victory', 1765),
('USS Arizona', 'Pennsylvania', 1915);

INSERT INTO BATTLES (NAME, DATE) VALUES
('Battle of Tripoli', '1804-08-03'),
('Battle of Trafalgar', '1805-10-21'),
('Pearl Harbor', '1941-12-07');

INSERT INTO CLASSES (CLASS, TYPE, COUNTRY, NUMGUNS, BORE, DISPLACEMENT) VALUES
('Constitution', 'BB', 'USA', 90, 1.2, 2200),
('Victory', 'BB', 'UK', 104, 1.4, 3500),
('Pennsylvania', 'BB', 'USA', 100, 1.3, 3300);

INSERT INTO OUTCOMES (SHIP, BATTLE, RESULT) VALUES
('USS Constitution', 'Battle of Tripoli', 'Victory'),
('HMS Victory', 'Battle of Trafalgar', 'Victory'),
('USS Arizona', 'Attack on Pearl Harbor', 'Sunk');

SELECT * FROM <table_name>;

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Example:

SELECT * FROM SHIPS;
SELECT * FROM BATTLES;
SELECT * FROM CLASSES;
SELECT * FROM OUTCOMES;

Untitled

SELECT SHIPS.NAME, SHIPS.CLASS, CLASSES.TYPE, CLASSES.COUNTRY
FROM SHIPS
JOIN CLASSES ON SHIPS.CLASS = CLASSES.CLASS;