A new session of each course opens each month, allowing you to enroll whenever your busy schedule permits!
How does it work? Once a session starts, two lessons will be released each week, for the six-week duration of your course. You will have access to all previously released lessons until the course ends.
Keep in mind that the interactive discussion area for each lesson automatically closes 2 weeks after each lesson is released, so you’re encouraged to complete each lesson within two weeks of its release.
The Final Exam will be released on the same day as the last lesson. Once the Final Exam has been released, you will have 2 weeks plus 10 days to complete the Final and finish any remaining lessons in your course. No further extensions can be provided beyond these 10 days.
Lesson 01 - Database Basics and Structured Query Language
In our first lesson, we'll explore the basic structure and history of relational databases. You'll learn the history of SQL, then we'll review some key terms. Then, you'll discover what SQL is and how it's used with a relational database.
Lesson 02 - Filtering and Retrieving Data
In this lesson, you'll learn how to use SQL to filter and retrieve data from tables. We'll talk about important query terms that allow you to communicate with your database, as well as syntax rules that will help you to create clear and understandable queries while avoiding system generated errors.
Lesson 03 - Sorting and Filtering Data
In this lesson, you'll learn how to use SQL to filter retrieved data. You'll practice sorting retrieved data using the ORDER BY clause. You'll be able to sort single and multiple columns, and you'll know how to specify sort directions such as ascending and descending order. You'll also learn additional query terms that will help you customize your SQL queries.
Lesson 04 - Calculated Fields and Functions
Today, you'll learn how to reformat retrieved data with calculated fields and functions. You'll also learn how to create alternate names for columns, and you'll discover the secret behind merging columns with the concatenation symbol.
Lesson 05 - Summarizing and Grouping Data
In this lesson, we'll discuss gathering significant statistics from data using aggregate functions. You'll also learn how to use the GROUP BY clause in conjunction with an aggregate function to gather important statistics from a table. Then you'll find out how to use the HAVING clause in conjunction with an aggregate function to filter groups of data from a table.
Lesson 06 - Working with Subqueries
Today's lesson is all about subqueries. You'll learn how to extract data from multiple tables simultaneously, how to use calculated fields in subqueries, how to use the DATEPART () function in subqueries, and how to use aggregate functions in subqueries. Then we'll talk about qualification—a technique used to combine a table name with a column name so there's no question about which table the column name refers to.
Lesson 07 - Creating and Using Table Joins
In this lesson, you'll learn how to use joins to gather information from two or more tables simultaneously. You'll learn how to use the inner join, self-join, natural join, and the outer join. Then you'll become familiar with the term Cartesian product.
Lesson 08 - Inserting, Updating, and Deleting Data
In today's lesson, you'll discover how to manipulate data using the INSERT, UPDATE, and DELETE statements. You'll learn how to insert partial and complete rows into a table, and how to update information already stored in a table. You find out how to transfer data to a new table, how to transfer data to an existing table, and how to delete rows from a table.
Lesson 09 - Table Creation and Maintenance
Today you'll find out how you can use SQL to create and maintain tables. You'll learn how to use the CREATE TABLE keywords to create a table, then we'll discuss how to use the ALTER TABLE, DROP TABLE, ADD COLUMN, and DROP COLUMN keywords to manipulate the tables themselves. You'll also find out how to define a primary key, data type, and field size.
Lesson 10 - Creating and Understanding Views
In this lesson, you'll learn how and why views are used in SQL. You'll learn how to create and use views to simplify complex queries, summarize data, and manipulate data stored in tables. I'll also teach you how to update and delete a view.
Lesson 11 - Understanding Transaction Processing, Constraints, and Indexes
Today, you'll learn how transaction processing, constraints, and indexes are implemented in SQL. You'll work through an example that demonstrates how a transaction is created, how constraints are used in the creation of a table, and how indexes are used to improve the performance of a database by optimizing the speed at which queries are processed.
Lesson 12 - Understanding Stored Procedures, Triggers, and Cursors
In our final lesson, you'll find out how stored procedures, triggers, and cursors are implemented in SQL. You'll see how stored procedures are created and executed, as well as how triggers work. You'll also see how cursors are declared in SQL.