No products in the cart.

What is FOREIGN key? How do …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

What is FOREIGN key? How do you define foreign key in your table?

Posted by S. K 3 years, 1 month ago

CBSE > Class 12 > Computer Science

1 answers

Sia ? 3 years ago

A FOREIGN KEY is a field (or collection of fields) in one table, that refers to the PRIMARY KEY in another table. The table with the foreign key is called the child table, and the table with the primary key is called the referenced or parent table.

1Thank You

ANSWER

Related Questions

A Railway company uses machines to sell tickets. The machine details and daily sales information are recorded in two tables: Table Name: Machine Table Name: Sales The primary key of the table Machine is Machine_ID. Records in the table Sales are uniquely identified by the fields Machine_ID and Date. (a) Create the tables Machine and Sales. (b) Write a query to find the number of ticket machines in each station. (c) Write a query to find the total ticket income of the station “New Delhi” of each day. (d) Write a query to find the total number of tickets sold by the machine (Machine_ID = 122) till date.

Posted by Parveen Singh 2 months, 3 weeks ago

CBSE > Class 12 > Computer Science

0 answers

Differentiate between function and argument

Posted by Prawar Narang 1 month, 2 weeks ago

CBSE > Class 12 > Computer Science

1 answers

Which book do you all follow for cs? How many chapters are there in the syllabus

Posted by Priya Shukla 3 weeks ago

CBSE > Class 12 > Computer Science

1 answers

What are called tokens

Posted by Kandeepan Jothivel 1 month, 3 weeks ago

CBSE > Class 12 > Computer Science

2 answers

Write a python program to calculate perimeter of rectangle

Posted by Gaya Thri 2 months, 4 weeks ago

CBSE > Class 12 > Computer Science

1 answers

What is mean by buffering in file handling?

Posted by Syedali Fathima 3 weeks, 3 days ago

CBSE > Class 12 > Computer Science

1 answers

Write a program in python to accept a number and check whether the number is divisible by 3 as well as 5 otherwise decide : (a) Is the number divisible by 3 and not by 5 (b) is the number divisible by 5 and not by 3 (c) is the number neither divisible by 3 or by 5

Posted by Manu Singh 1 month, 3 weeks ago

CBSE > Class 12 > Computer Science

0 answers

a=[1,12,4,0,18,17,16] n=len(a) for i in range(1,0): key=a[I]: j=i_1 while j>=0 and key

Posted by Rada Rada 4 months ago

CBSE > Class 12 > Computer Science

2 answers

Write a program to accept a list of strings, display which as starting and ending letter to be same.

Posted by Shakthi Shakthi 3 months, 1 week ago

CBSE > Class 12 > Computer Science

0 answers

This content has been hidden. One or more users have flagged this content as inappropriate. Once content is flagged, it is hidden from users and is reviewed by myCBSEguide team against our Community Guidelines. If content is found in violation, the user posting this content will be banned for 30 days from using Homework help section. Suspended users will receive error while adding question or answer. Question comments have also been disabled. Read community guidelines at https://mycbseguide.com/community-guidelines.html

Few rules to keep homework help section safe, clean and informative.

Don't post personal information, mobile numbers and other details.
Don't use this platform for chatting, social networking and making friends. This platform is meant only for asking subject specific and study related questions.
Be nice and polite and avoid rude and abusive language. Avoid inappropriate language and attention, vulgar terms and anything sexually suggestive. Avoid harassment and bullying.
Ask specific question which are clear and concise.

Remember the goal of this website is to share knowledge and learn from each other. Ask questions and help others by answering questions.

Posted by Manoj Kumar Manoj Kumar 2 months, 2 weeks ago

CBSE > Class 12 > Computer Science