Introduction to Data storage

1. DATABASE DESIGN
USING MYSQL
What is A Database?

2. WHAT IS A DATABASE?
A database is an
ordered collection of data
The word “Database” can be quite vague. People tend to
clump a combination of 3 things when referring to a
database
• The Data
• The Database Management System
• Database Application

3. DATABASE MANAGEMENT SYSTEMS
(DBMS)
A “DBMS” is Software that is designed to model data and
provide interaction with a user
• Data is normally stored in one or more files
• Data is usually stored in tables
• Tables contain rows and columns much like a
spreadsheet
• Data can be cross referenced among tables. This
functionality is used in “Relational Databases”
such as MySQL

4. POPULAR DBMS’S
• MySQL
• PostgreSQL
• SQLite
• Microsoft SQL Server
• Oracle
• SAP
• FoxPro
• dBASE
• MariaDB

5. SIMPLE EXAMPLE
id first_name last_name email
1 Brad Traversy brad@something.com
2 John Doe john@something.com
3 Jane Doe Jane@something.com
Here is an example of a very simple
table inside of a database
Database Name: MyStore
Table Name: Users
Columns/Fields: id, first_name, last_name, email
Rows/Records: 3 Users

6. INTERACTING WITH A DATABASE
Some common functions when working with
a database…
• Define
• Create
• Select
• Query
• Update
• Delete

7. WHAT IS SQL?
SQL (Structured Query Language) is a special purpose
programming language that allows developers to
interact with the data in a database
• Based on relational algebra and tuple relational
calculus
• Data definition and data manipulation language
• Perform CRUD (Create, Read, Update, Delete)

8. COMMON DATABASE MODELS
• Relational Database (MySQL)
• Object Oriented Database
• Object Relational Database
• Distributed Database
• NoSQL Database (MongoDB)
• Multimedia Database
• Flat Database
• Network Database
• Hierarchical Database

9. THAT’S IT!