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SQL
7 Units
30 Lessons
Unit 1
Basics
Introduction to SQL Syntax and Data Types
Executing Simple SELECT Queries
Inserting, Updating, and Deleting Data Basics
Real-World Project: Building a Simple Inventory Database
Unit 2
Advanced Query Techniques
Using Aggregations and Grouping Functions
Advanced String and Date Manipulation Functions
Working with Common Table Expressions (CTEs)
Implementing Window Functions for Data Analysis
Real-World Project: Analyzing Sales Data with Advanced Queries
Unit 3
Joins and Subqueries
Understanding Inner and Outer Joins
Using Subqueries in SELECT Statements
Nesting Subqueries in WHERE and FROM Clauses
Exploring Self-Joins and Cross Joins
Real-World Project: Merging Data from Multiple Tables
Unit 4
Database Design and Normalization
Fundamentals of Database Design Principles
Applying First, Second, and Third Normal Forms
Real-World Project: Designing and Normalizing a Relational Database
Advanced Normalization Techniques like BCNF
Unit 5
Transactions and Concurrency Control
Basics of SQL Transactions and ACID Properties
Implementing Commit, Rollback, and Savepoints
Concurrency Control with Locking Mechanisms
Real-World Project: Managing Transactions in a Banking System
Unit 6
Indexing and Performance Optimization
Introduction to SQL Indexing and Its Types
Real-World Project: Optimizing a Large-Scale Database
Query Optimization Techniques and Execution Plans
Creating and Managing Indexes for Query Speed
Unit 7
Advanced Topics in SQL Integration
Integrating SQL with External Data Sources
Real-World Project: Building an Integrated SQL Application
Using Triggers and Stored Procedures for Automation
Views and Materialized Views in Complex Systems
Unit 5
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Chapter 2
Implementing Commit, Rollback, and Savepoints
Summary
No summary available for this chapter.
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What happens if you ROLLBACK after a COMMIT in SQL?
It creates a new savepoint
Changes are undone successfully
Changes cannot be undone after COMMIT
Changes cannot be undone
How does SAVEPOINT affect transaction rollback?
Commits changes permanently
Allows rollback to specific point
Rolls back entire transaction
Allows rollback to specific point
In SQL, can you ROLLBACK temporary changes before COMMIT?
Yes, to previous permanent state
Yes, to previous permanent state
No, changes are permanent
Only with SAVEPOINT
What is the primary use of COMMIT in transactions?
Makes DML changes permanent
Sets a rollback point
Makes DML changes permanent
Undoes recent changes
If multiple SAVEPOINTS exist, what does ROLLBACK TO do?
Rolls back to specified savepoint
Commits all changes
Rolls back to the last savepoint
Rolls back to specified savepoint
5 questions remaining
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Basics of SQL Transactions and ACID Properties
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Concurrency Control with Locking Mechanisms