---

MySQL Tutorials Roadmap

---

Section 1: Introduction to MySQL

• What is MySQL?
  • A widely used open-source relational database management system (RDBMS).
  • Known for its speed, reliability, and ease of use.
• Why MySQL?
  • Open-source and free to use (Community Edition).
  • High performance and scalability.
  • Large and active community.
  • Suitable for web applications, e-commerce, and various software.
• Key Concepts:
  • Databases, Tables, Rows, Columns.
  • Primary Keys, Foreign Keys.
  • Relationships between tables.
• Setting up MySQL:
  • Installing MySQL Community Server.
  • Installing MySQL Workbench (GUI tool) or using the MySQL Command-Line Client.
  • Connecting to a MySQL server instance.

Section 2: Basic SQL Queries

• Introduction to SQL:
  • Structured Query Language.
  • Standard language for interacting with relational databases.
• SELECT Statement:
  • Retrieving data from tables.
  • Selecting all columns (SELECT *).
  • Selecting specific columns.
  • Using aliases for columns and tables.
• FROM Clause:
  • Specifying the table(s) to retrieve data from.
• WHERE Clause:
  • Filtering rows based on conditions.
  • Comparison operators (=, >, <, >=, <=, <> or !=).
  • Logical operators (AND, OR, NOT).
  • IN, BETWEEN, LIKE operators.
  • Handling NULL values (IS NULL, IS NOT NULL).
• ORDER BY Clause:
  • Sorting results (ASC, DESC).
• LIMIT Clause:
  • Limiting the number of rows returned.

Section 3: Data Manipulation (DML)

• INSERT Statement:
  • Adding new rows to a table.
  • Inserting single rows.
  • Inserting multiple rows.
• UPDATE Statement:
  • Modifying existing data in a table.
  • Updating single rows.
  • Updating multiple rows.
• DELETE Statement:
  • Removing rows from a table.
  • Deleting specific rows.
  • Deleting all rows (TRUNCATE TABLE vs. DELETE FROM).

Section 4: Working with Multiple Tables

• Understanding Relationships:
  • One-to-One, One-to-Many, Many-to-Many.
• JOIN Operations:
  • INNER JOIN: Returning matching rows from both tables.
  • LEFT JOIN (or LEFT OUTER JOIN): Returning all rows from the left table and matching rows from the right.
  • RIGHT JOIN (or RIGHT OUTER JOIN): Returning all rows from the right table and matching rows from the left.
  • FULL OUTER JOIN (simulated in MySQL using UNION of LEFT JOIN and RIGHT JOIN).
  • CROSS JOIN: Returning the Cartesian product of two tables.
• Subqueries:
  • Using queries within other queries.
  • Scalar subqueries, multi-row subqueries.

Section 5: Data Definition (DDL)

• Creating Databases:
  • CREATE DATABASE statement.
• Creating Tables:
  • CREATE TABLE statement.
  • Defining columns, data types, constraints (PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, DEFAULT, CHECK).
• Altering Tables:
  • ALTER TABLE statement (adding/dropping columns, adding/dropping constraints).
• Dropping Databases and Tables:
  • DROP DATABASE and DROP TABLE statements.

Section 6: Data Types and Functions

• Common MySQL Data Types:
  • INT, VARCHAR, TEXT, DATE, DATETIME, DECIMAL, FLOAT, BOOLEAN, etc.
• Built-in Functions:
  • String functions (LENGTH, SUBSTRING, UPPER, LOWER, REPLACE).
  • Numeric functions (ABS, ROUND, CEILING, FLOOR).
  • Date and time functions (NOW, CURDATE, DATEDIFF, DATE_ADD, DATE_SUB).
  • Aggregate functions (COUNT, SUM, AVG, MIN, MAX).
• GROUP BY and HAVING Clauses:
  • Grouping rows for aggregation.
  • Filtering grouped results.

Section 7: Views, Stored Procedures, and Functions

• Views:
  • Creating virtual tables based on a query.
  • Simplifying complex queries.
  • CREATE VIEW, ALTER VIEW, DROP VIEW.
• Stored Procedures:
  • Creating reusable blocks of SQL code.
  • Improving performance and security.
  • Passing parameters.
  • DELIMITER keyword.
  • CREATE PROCEDURE, ALTER PROCEDURE, DROP PROCEDURE.
  • Executing stored procedures (CALL).
• User-Defined Functions (UDFs):
  • Scalar functions.
  • CREATE FUNCTION, ALTER FUNCTION, DROP FUNCTION.

Section 8: Indexing and Performance Tuning

• Understanding Indexes:
  • How indexes improve query performance.
  • Types of indexes (B-tree, Hash).
• Creating and Managing Indexes:
  • CREATE INDEX statement.
  • Dropping indexes.
• Using EXPLAIN:
  • Analyzing query execution plans.
  • Identifying performance bottlenecks.
• Basic Performance Tuning Techniques:
  • Optimizing queries.
  • Using appropriate indexes.

Section 9: Transactions and Concurrency

• Understanding Transactions:
  • ACID properties (Atomicity, Consistency, Isolation, Durability).
  • START TRANSACTION (or BEGIN), COMMIT, ROLLBACK.
• Concurrency Control:
  • Dealing with multiple users accessing data simultaneously.
  • Locks.
• Isolation Levels:
  • Understanding different isolation levels (Read Uncommitted, Read Committed, Repeatable Read, Serializable).
• Storage Engines (InnoDB vs. MyISAM):
  • Differences and when to use each.

Section 10: Security in MySQL

• User Management:
  • Creating users (CREATE USER).
  • Dropping users (DROP USER).
• Granting and Revoking Privileges:
  • Controlling user access (GRANT, REVOKE).
  • Understanding different privilege types.
• Securing the MySQL Server:
  • Basic security practices.

Section 11: Backup and Restore

• Logical Backups (mysqldump):
  • Creating SQL dumps of databases.
  • Restoring from SQL dumps.
• Physical Backups (InnoDB Hot Backup, Percona XtraBackup):
  • Introduction to physical backup methods.

Section 12: Replication and High Availability

• Replication:
  • Creating copies of data across multiple servers.
  • Master-Replica replication.
  • Setting up replication.
• Introduction to High Availability Solutions:
  • MySQL Cluster, Group Replication.

Section 13: Advanced Topics and Ecosystem

• Triggers:
  • Automating actions based on data modifications.
• Events:
  • Scheduling tasks.
• Window Functions:
  • Performing calculations across a set of table rows related to the current row.
• Introduction to MySQL Workbench:
  • Using the GUI for administration and development.
• Learning Resources:
  • Official MySQL documentation.
  • MySQL tutorials and blogs.
  • Community forums.
  • Books and online courses.

---