aliensbrain
  • Home
  • Study
  • Quizzes
  • 🎤AI Practicefree
  • Notebooks
  • Community
  • Sign in
Multiple choice

A teacher keeps the class record containing the following data for each student: Name, Marks, Admission number, Final grades, Hobbies.

Which of these can be set as the primary key?

  1. Name

  2. Marks

  3. Admission number

  4. Final grades

  5. Hobbies

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Admission number is always unique. Thus, this is the correct answer.

Keep practicing — related questions

  • Consider a relational table with a single record for each registered student with the following attributes....
  • A student has such attributes as name, address, and gender. A student can also attend a graduate, undergrad...
  • "A student has such attributes as name, address, and gender. A student can also attend a graduate, undergra...
  • ________ stores data in the form of a parent-child relationship.
  • Consider the set of relations shown below and the SQL query that follows: Students: (Roll_ number, Name, Da...
  • Consider the set of relations shown below and the SQL query that follows. Students: (Roll_number, Name, Dat...
  • Consider the set of relations shown below and the SQL query that follows. Students: (Roll_number, Name, Dat...
  • Which of the following data items may lead to a variable length records when included as items in a record?...

Practice this topic

  • Database Management Systems (5344 questions)
Advertisement
© Aliensbrain | all rights reserved
  • About
  • Contact
  • Terms and Condition
  • Privacy Policy