Learn how to work with the FOREIGN KEY constraint in SQL. A FOREIGN KEY is a field in one table that refers to the PRIMARY KEY in another. A child table is a table with a foreign key.
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This clip is from the chapter...

Learn how to work with the CHECK constraint in SQL to allow only specific values for a column. You can limit the value range set in a column, for example, Age > 18, Marks > 75, and so on.
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This clip is from the chapter...

Learn how to work with the PRIMARY KEY constraint in SQL. A PRIMARY KEY uniquely identifies each record. Not a Primary Key column can never have NULL values.
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This clip is from the chapter "Constraints in SQL" of the series...

Learn how to work with the UPDATE statement in SQL to update existing records in a table. Use the WHERE clause with the UPDATE statement to avoid updating all records in the table.
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This clip is from the chapter "Alter and...

Learn how to work with the ALTER TABLE in SQL to add or delete columns in the existing table. To add a column to an existing table, use the ALTER TABLE with ADD command. To delete a column from an existing table, use the ALTER TABLE...

Are you wondering what the heck serial communication is?



Maybe you have been using some functions from the Arduino Serial library, like Serial.begin() and...

This week Michael sits with 17 year old whiz-kid Nikodem Bartnik who recently built his very own Arduino Drone. Nikodem talks about challenges that came with 3D printing his own frame (4:50), how the internet was his primary resource...

Let's talk about Wikipedia. Wikipedia is often maligned by teachers and twitter trolls alike as an unreliable source. And yes, it does sometimes have major errors and omissions, but Wikipedia is also the Internet's largest general...

Are you wondering what the heck serial communication is?



Maybe you have been using some functions from the Arduino Serial library, like Serial.begin() and Seri
al.print()
and...

Edward Kinman is Professor of Geography and Assistant Dean for Assessment and Program Improvement for the Cook-Cole College of Arts and Sciences at Longwood University, located in Farmville, VA. He serves as the Coordinator for the...

Understand the primary functions of a statistic module with examples.
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This clip is from the chapter "Python – Statistics Module" of the series "The Complete Python Course (2022)".This section handles statistical data in a...

This one’s been a long time coming. It was worth the wait. Today I’m taking on The Revenant. I did a lot of research on this one, so let’s take our time and dig deep. By the end of this, I hope no one who watches this can take this movie...

🔥Java Certification Training'https://www.edureka.co/java-j2ee-training-course' target='_blank' rel='nofollow'>Training This Edureka video on “Arrays in Java Part - 1” will talk about one of the pillars of Java fundamentals i.e...

A new study using observations from NASA's Fermi Gamma-ray Space Telescope reveals the first clear-cut evidence that the expanding debris of exploded stars produces some of the fastest-moving matter in the universe. This...

Explore the ways in which scientists are developing new sources of energy.
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People and places -Future of energy - The fu
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ure of energy />

Learning Points
Science helps with developing cleaner...

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