YouTube Link: https://youtu.be/sTiWTx0ifaM ** Data Science Master Program: https://www.edureka.co/masters-program/data-scientist-certification** This Edureka session on SQL for Data Science will help you understand how SQL can be used to store, access and retrieve data to perform data analysis. Here’s a list of topics covered in this session: 1. Introduction To Data Science 2. Why Is SQL Needed For Data Science? 3. What Is SQL? 4. Basics Of SQL 5. Installing MySQL 6. Hands-On Follow us to never miss an update in the future. YouTube: https://www.youtube.com/user/edurekaIN Instagram: https://www.instagram.com/edureka_learning/ Facebook: https://www.facebook.com/edurekaIN/ Twitter: https://twitter.com/edurekain LinkedIn: https://www.linkedin.com/company/edureka Castbox: https://castbox.fm/networks/505?country=in

1. Copyright © 2017, edureka and/or its affiliates. All rights reserved.

2. WHY IS SQL NEEDED FOR DATA SCIENCE?
WHAT IS SQL?
BASICS OF SQL
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HANDS-ON
INTRODUCTION TO DATA SCIENCE

3. INTRODUCTION TO DATA SCIENCE
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4. Did you know that we're generating more than 2.5 quintillion bytes of data each day? This pace of
data generation is the reason behind the popularity of high-end technologies such as Data Science,
Artificial Intelligence, Machine Learning and so on.
Introduction To Data Science
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Data Science is the process deriving useful insights from data in order to solve
real-world problems.

5. WHY IS SQL NEEDED FOR DATA SCIENCE?
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6. SQL can be used to store, access and extract massive amounts of data in order to carry out the
whole Data Science process more smoothly.
Why Is SQL Needed For Data Science?
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Data Science involves extracting, processing, and analysing tons of data. At present what we
need are tools that can be used to store and manage this vast amount of data.

7. WHAT IS SQL?
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8. SQL stands for Structured Query Language is a querying language aimed to manage Relational
Databases.
What Is SQL?
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SQL programming can be used to perform multiple actions on data such as:
Querying Inserting Updating Deleting Extracting
RDMS is a data management system where data is stored into different tables (columns and rows) and
relations are established among the different data variables by using primary keys and so on.

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Open Source
Supports large
databases
Customizable
Supports multiple
programming interfaces

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11. BASICS OF SQL
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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
CREATE DATABASE name;
USE name;
Syntax
Function: Creates a new database
• CREATE DATABASE: This command creates a database
• USE: Activate the database

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
CREATE TABLE name (variable1 data_type1,
variable2 data_type2);
Syntax
Function: Creates a new table
• CREATE DATABASE: This command creates a table containing the
data variables.
• Each variable must be defined w.r.t its data type

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
INSERT INTO name VALUES (value1, value2, value3,
vlaue4..);
Syntax
Function: Inserts new data into a database
• INSERT INTO: This command inserts values into the table.
• Remember the values inserted must align with the defined data
types.

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
SELECT * FROM table_name;
Syntax
Function: Extracts data from a database
• SELECT * FROM: This command selects a specified table/column
and extracts it.
• The command can be modified to extract specific data.

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
Syntax
Function: Updates data in a database
• UPDATE: This command allows you to modify any
values/variables stored in the table.
• WHERE: Selects the variable/ value that you want to change
UPDATE table_name SET variable1=‘ ’ WHERE
condition;

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
Syntax
Function: Deletes data from a database
• UPDATE: This command allows you to delete values/ variables from a
table.
• WHERE: Allows you to pose a condition to delete a specific value.
DELETE FROM table WHERE condition;

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CREATE DATABASE
CREATE TABLE
INSERT INTO
SELECT
UPDATE
DROP TABLE
DELETE
Syntax
Function: Deletes a table
• DROP TABLE: This command is used to delete a table and all rows in
the table
DROP TABLE table_name;

19. DEMO
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20. Copyright © 2017, edureka and/or its affiliates. All rights reserved.
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