6 years ago in Database Management System

Which of the following will NOT eliminates the ambiguities of a null value?

[A] Define the attribute as required
[B] Define subtypes
[C] Define each attribute as having an initial value that is recognized as blank
[D] Define supertypes
Loading...
Next Question

Overall Stats

Attempted 460
Correct 21
Incorrect 165
Viewed 274

Answers

Guest
Guest
uma maheswari
uma maheswari - 7 months ago

uma maheswari from Tiruchi, India is saying Define each attribute as having an initial value that is recognized as blank is correct answer

Tsega Asresa Mengistu
Tsega Asresa Mengistu - 7 months ago

Tsega Asresa Mengistu from Dessie, Ethiopia is saying Define the attribute as required is correct answer

Serkie Mekonnen
Serkie Mekonnen - 7 months ago

Serkie Mekonnen from Dessie, Ethiopia is saying Define the attribute as required is correct answer

Abdul Haseeb Shershahabadi
Abdul Haseeb Shershahabadi - 9 months ago

Abdul Haseeb Shershahabadi from Birpur, India is saying Define each attribute as having an initial value that is recognized as blank is correct answer

Deep
Deep - 9 months ago

Deep from Kolkata, India is saying Define supertypes is correct answer

Related Questions

The EXISTS keyword will be true if:

  • [A] any row in the subquery meets the condition only.
  • [B] all rows in the subquery fail the condition only.
  • [C] both of these two conditions are met.
  • [D] neither of these two conditions is met.

Which of the following is a technique for hiding the internal implementation details of an object?

  • [A] Encapsulation
  • [B] Polymorphism
  • [C] Inheritance
  • [D] All of the above.

Before any changes to database structure are attempted one should first:

  • [A] clearly understand the current structure and contents of the database only.
  • [B] test any changes on a test database only.
  • [C] create a complete backup of the operational database only.
  • [D] All of the above should be done.