No products in the cart.

Hi.difference between foreign key and primary …

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

Install Now

Hi.difference between foreign key and primary key

Posted by Nandha Gopal 7 years, 1 month ago

CBSE > Class 12 > Informatics Practices

1 answers

Shubham Kaithwas 7 years, 1 month ago

A primary key is a column or a set of columns that uniquely identify a row in a table. ... Usually a foreign key is in a table that is different from the table whose primary key it is required to match. A table can have multiple foreign keys. The primary key cannot accept null values. A foreign key maybe a primary key but a primary key must not a foreign key ☺️

0Thank You

ANSWER

Related Questions

Consider a given series,M1 write a program in python pandas to create the series

Posted by Martina Sangchoju 9 months, 3 weeks ago

CBSE > Class 12 > Informatics Practices

2 answers

Select round(6.5675,2);

Posted by Simran Batra 5 months ago

CBSE > Class 12 > Informatics Practices

0 answers

All data types of MySQL with example

Posted by Prapti Dubey 6 months ago

CBSE > Class 12 > Informatics Practices

0 answers

what are aggregate function inSQL? Name any two

Posted by Arifa Meharun 4 months ago

CBSE > Class 12 > Informatics Practices

0 answers

Consider the SchoolBus table given below: Rtno. Area_covered. Capacity. No of students. Distance. Transporter. Charges 1. Vasantkunj 100 120 10 Shivamtravels 100000 2. HauzKhas 80 80 10 Anand travels 85000 3. Pitampura 60 55 30 Anand travels 60000 4. Rohini 100 90 35 Anand travels 100000 5. Yamuna Vihar 50 60 20 Bhalla Co. 58000 6. Krishna Nagar 70 80 30 Yadav Co. 80000 7. Vasundhara 100 110 20 Yadav Co. 100000 8. PaschimVihar 40 40 20 Speed travels 55000 (i) State the command that will give the output as : Area_covered Yamuna Vihar Krishna Nagar Vasundhara (ii) State the command to display the records of SchoolBus where distance is 20 according to their charges. (iii) State the command to display the total capacity Transporter wise. (iv) State the command to increase the charges by 20% where distance is more than 20. (v) State the command to display those records whose capacity is greater than 60 and charges between 80000 to 100000. (vi) State the command to delete the records of Rtno 6,7 and 8. (vii)State the command to display those records where charges greater than the average charges.

Posted by Sejal Gupta 6 months, 2 weeks ago

CBSE > Class 12 > Informatics Practices

0 answers

Write a program that generates the table of a input number using for loop

Posted by Siya Vishwakarma 7 months, 2 weeks ago

CBSE > Class 12 > Informatics Practices

1 answers

List down the average of phone number what is the coding I couldn't remember

Posted by Akib Chowdhury 6 months ago

CBSE > Class 12 > Informatics Practices

1 answers

Founder of python

Posted by Parth Chaudhary 9 months, 1 week ago

CBSE > Class 12 > Informatics Practices

2 answers

Display the details of all the employees whose value is null

Posted by Yashika Kakkar 6 months, 2 weeks ago

CBSE > Class 12 > Informatics Practices

1 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 Honey Hanisha 9 months, 3 weeks ago

CBSE > Class 12 > Informatics Practices