MySQL

Why Databases Are Awesome

MySQL

What Is A Database?

MySQL

What Is A Database?

Why Do They Matter?

What Is A Database?

1. A collection of data

A Phone Book!

Andrews, Archie  - (949)345-2222
Cooper, Betty    - (212)246-9846
Flanders, Ned    - (415)987-3451
Jones, Jughead   - (415)888-3777
Lodge, Veronica  - (714)332-0981
Snow, Jon        - (949)621-1908
Stark, Ned       - (310)119-6501

Find Ned Flanders' Phone Number

Find People With First Name "Ned"

Find All Phone Numbers With Area Code 415

Find All People Who Have a 3-letter First Name

A Quick Example

What Is A Database?

1. A collection of data

2. A method for accessing and manipulating that data

Andrews, Archie  - (949)345-2222
Cooper, Betty    - (212)246-9846
Flanders, Ned    - (415)987-3451
Jones, Jughead   - (415)888-3777
Lodge, Veronica  - (714)332-0981
Snow, Jon        - (949)621-1908
Stark, Ned       - (310)119-6501

Find Ned Flanders' Phone Number

Find People With First Name "Ned"

Find All Phone Numbers With Area Code 415

Find All People Who Have a 3-letter First Name

A Quick Example

Database Management System

Database

Vs.

Database

DBMS

Your App

"Database"

Database

DBMS

PostgreSQL

MySQL

SQLite

Oracle Database

What Is A Database?

A structured set of computerized data with an accessible interface

Why Do They Matter?

Well...why does data matter?

Data

Is

Knowledge

Data

Is

Money

You've probably heard of big data....

It's ok if you haven't!

Data has always played an important role in industries

But now, data itself is a huge booming industry!

Why MySQL?

Some Popular Databases

 

  • MongoDB
  • Oracle
  • MySQL
  • SQLite
  • PostgreSQL
  • MaxDB
  • Firebird
  • Redis

Some Popular Databases

 

  • MongoDB
  • Oracle
  • MySQL
  • SQLite
  • PostgreSQL
  • MaxDB
  • Firebird
  • Redis

MySQL

vs.

SQL

Let's Start With SQL

Structured Query Language

SQL is the language we use to "talk" to our databases

"Find All Users"

"Find All Users Who Are 18 Years Old"

"Add A New User With Username 'JumboJim'"

Delete Every Single User!

A Quick Preview!

 SELECT * FROM Users WHERE Age >= 18;

Find All Users Who Are 18 Or Older

Working With MySQL Is Primarily Writing SQL

 

 

  • MySQL
  • SQLite
  • PostgreSQL
  • Oracle
  • Many Others

Relational Databases

All Use SQL

}

MySQL

 SELECT * FROM Users WHERE Age >= 18;

PostgreSQL

 SELECT * FROM Users WHERE Age >= 18;

There Are Slight Differences In Syntax

Which We'll Talk About In This Course!

Two Takeaways

1. Once you learn SQL, it's pretty easy to switch to another DB that uses SQL

2. What makes databases (DBMS) unique are the features they offer, not the language

Some Code

SELECT * FROM animals;

SELECT species, status FROM animals;