You want to avoid having bad data, right?
Data that doesn’t make sense, is missing when it should be populated, or refers to other data that does not exist.
We want to avoid these kinds of issues.
How can we do that?
We use constraints.
In this article, I’ll explain everything you need to know about constraints.
Do you want to learn SQL?
You’ve come to the right place.
On this page, you’ll find videos, links, and information for this Introduction to Oracle SQL course.
So, keep reading to see what you’ll learn and watch the videos in this course.
Oracle 18c has been released.
How does it impact you as a developer or a DBA?
How can you get access to it to play around with some of the new features?
Keep reading to find the answers to this, and more.
The software development industry has a lot of conferences.
And Oracle is no different.
So, you’re interested in becoming a database developer?
I’ll show you the path you can take, what skills are needed, and much more, in this article.
Changing the case of text in Oracle is a common task when comparing strings or validating data. Learn how to do it with the UPPER, LOWER, and INITCAP functions in this article.
Do you need to use sine, cosine, or tangent functions in your queries or database code?
Oracle has plenty of those functions you can use.
Learn how to use them and see some examples in this article.
Do you need to find out more information about your errors and exceptions in PL/SQL?
You can use the SQLCODE and SQLERRM functions to do that. Learn how the functions work and see some examples in this article. read more…
Oracle’s two INTERVAL data types are used to store a period of time. There are a few functions that convert data into these data types. Learn how to use them and see some examples in this article.
In this article, I’ll explain what the TO_BINARY_DOUBLE and TO_BINARY_FLOAT functions do and show you some examples.