Check and Default constraints are both not the same. They create during create Table. Differences between these you can understand with these examples.
Loops and iterators are two unique concepts. But the outcome is the same. Here are details explained with simple examples.
Here’s a simplified script to read all the elements of the array. You can do two things with this script. Those are appending and Counting.
Here’s a simple command that you can use to change shells. It’s useful to work with multiple shells at a time.
Here is a resolution for SQL error -206. You will get an error of object is not valid. Here are possible reasons for this error. Also given solution for how to fix it.
How to use file descriptors in Unix is explained in this post. Unix supports three types. Here is an example that shows how it works.
Here is a tricky shell script question. What happens if you give duplicate function names in the script.
Here are 13 tricky AWS Simple workflow service interview questions. These are useful for AWS interviews.
Here are two top formulas you can use to decide how to buy a house. Also, it helps to sell land. These are useful for everyone.
Here’s the best way to use ‘and’ condition. Also, this example shows the best way to use the ‘or’ condition in COBOL.
Here’s a difference between VSAM HURBA and HARBA and its calculation. It’s useful for interviews.
Amazon RDS provides Database services. DB instance is the basic building block. Here you will know the top five features of it.