MYSQL

LEFT OUTER JOIN

Return all records from the left table, and the matched records from the right table

RIGHT OUTER JOIN

Return all records from the right table, and the matched records from the left table

FULL OUTER JOIN

Return all records when there is a match in either left or right table

INNER JOIN

Returns records that have matching values in both tables

Database

is a separate application that stores a collection of data. Each database has one or more distinct APIs for creating, accessing, managing, searching and replicating the data it holds.

full join

is also called a cross join because each row of each table is crossed with each row in every other table to produce all possible combinations.

Database redundancy

is needed to ensure that database operations are still at present in the event that an outage takes place in an enterprise setting

foreign key

is the linking pin between two tables.

MySQL

is the most popular Open Source SQL Database Management System.

primary key

is unique and cannot occur twice in one table

David Axmark, Allan Larsson and Michael Widenius

mysql founded by

p

stands for password

u

stands for username

Rows

contain a group of related data

LEFT and RIGHT JOIN

"Everything that a query sees from the left reference is that one that it is being queried by the database" No match would mean Null Doing a right join would be just the complete reversal of a left join

standby database

. A _ server takes over should there be any issues that the primary server encounters failover setup

Relational DataBase Management System

> Enables you to implement a database with tables, columns and indexes. > Guarantees the Referential Integrity between rows of various tables. > Updates the indexes automatically. > Interprets an SQL query and combines information

The Flexibility of Open Source

All the fears and worries that arise in an open source solution can be brought to an end with My SQL's round-the-clock support and enterprise indemnification. The secure processing and trusted software of MySQL combine to provide effective transactions for large volume projects. It makes maintenance, debugging and upgrades fast and easy while enhancing the end-user experience.

Reduced Total Cost of Ownership

By migrating current database apps to MySQL, enterprises are enjoying significant cost savings on new projects. The dependability and ease of management that accompany MySQL save your troubleshooting time which is otherwise wasted in fixing downtime issues and performance problems.

Inner JOIN

Captures the common items at present in two or more different tables.

MySQL AB

Developed by a Swedish company named _

mysql.exe -u root -p

In CLI we can connect in this manner

other commands

List all indexes on a table: show index from [table]; Adding a column: ALTER TABLE [table] ADD COLUMN [column] VARCHAR(120); Adding a column with an unique, auto-incrementing ID: ALTER TABLE [table] ADD COLUMN [column] int NOT NULL AUTO_INCREMENT PRIMARY KEY; Explain records: EXPLAIN SELECT * FROM [table]; Selecting parts of records: SELECT [column], [another-column] FROM [table]; Counting records: SELECT COUNT([column]) FROM [table]; Updating records: UPDATE [table] SET [column] = '[updated-value]' WHERE [column] = [value]; Deleting records: DELETE FROM [table] WHERE [column] = [value]; Delete all records from a table (without dropping the table itself): DELETE FROM [table];  Delete all records in a table: truncate table [table]; Removing table columns: ALTER TABLE [table] DROP COLUMN [column]; Deleting tables: DROP TABLE [table]; Deleting databases: DROP DATABASE [database];

David Axmark and Michael Widenius

MySQL authors were

Round-the-clock Uptime

MySQL comes with the assurance of 24X7 uptime and offers a wide range of high availability solutions like specialized cluster servers and master/slave replication configurations.

High Performance

MySQL features a distinct storage-engine framework that facilitates system administrators to configure the MySQL database server for a flawless performance. Whether it is an eCommerce website that receives a million queries every single day or a high-speed transactional processing system, MySQL is designed to meet even the most demanding applications while ensuring optimum speed, full-text indexes and unique memory caches for enhanced performance.

free-of-charge enterprise subscription

MySQL has two lines of support:

daughter

MySQL is a two word name where the word 'My' was named after Michael Widenius's

Data Security

MySQL is globally renowned for being the most secure and reliable database management system used in popular web applications like WordPress, Drupal, Joomla, Facebook and Twitter. The data security and support for transactional processing that accompany the recent version of MySQL, can greatly benefit any business especially if it is an eCommerce business that involves frequent money transfers.

On-Demand Scalability

MySQL offers unmatched scalability to facilitate the management of deeply embedded apps using a smaller footprint even in massive warehouses that stack terabytes of data. On-demand flexibility is the star feature of MySQL. This open source solution allows complete customization to eCommerce businesses with unique database server requirements.

Comprehensive Transactional Support

MySQL tops the list of robust transactional database engines available on the market. With features like complete atomic, consistent, isolated, durable transaction support, multi-version transaction support, and unrestricted row-level locking, it is the go-to solution for full data integrity. It guarantees instant deadlock identification through server-enforced referential integrity.

C and C++

MySQL was developed using the _ as its native language

ORACLE

Nowadays, _ already bought the rights and offerings for MySQL

give-back operation

Once the issue is resolve, the secondary / standby server then gives back the service to the primary server called

SQL API

SQL simply because it is built as

;

Take note that the default delimiter for MySQL is

23 May 1995

The first version of MySQL appeared on

8 2016

There are _ releases for MySQL where the latest version was released last _

full join

This is also known as the cartesian product.

describe tblname;

To check the table attributes in MySQL invoke the

create database dbname;

To create a databases in MySQL invoke the

create table tblname, colname type;

To create tables in MySQL invoke the

insert into tblname (col1,col2) values (val1, val2);

To insert table values in MySQL invoke the

select * from tblname;

To select table values in MySQL invoke the

show tables;

To show all of your created tables in database in MySQL invoke the

show databases;

To show available databases in MySQL invoke the command.

use dbname;

To switch databases in MySQL invoke the

Complete Workflow Control

With the average download and installation time being less than 30 minutes, MySQL means usability from day one. Whether your platform is Linux, Microsoft, Macintosh or UNIX, MySQL is a comprehensive solution with self-management features that automate everything from space expansion and configuration to data design and database administration.

Columns

contain data of one and the same kind

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db birds eye