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হোম›একাদশ-দ্বাদশ শ্রেণি›English Version›Information and Communication Technology›C-06 — Database Management System›C-06-Q036

C-06-Q036mediumsingle_mcq

Every adult in Bangladesh has a unique National Identification (NID) number. Why can the NID be used as a primary key?

aBecause NID numbers are always text
bBecause no two people share the same NID, so it uniquely identifies each person
cBecause NID numbers auto increment
dBecause NID is a foreign key

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এই অধ্যায়ের আরও প্রশ্ন

C-06-Q037Database relation refers to the relation between —
C-06-Q038How many types of database relations are mentioned in the chapter?
C-06-Q039Which of the following is one of the three types of database relations?
C-06-Q040When we use the primary key of one table in another table, it is known as a —
C-06-Q041What creates the relation between two tables?
C-06-Q042In a one to one relation, a row from one table can have a relation to —
C-06-Q043In the example, studentinfo has each student once and result stores results subject-wise; student with roll 1
C-06-Q044A student can be a member of many clubs and a club can have many student members. What type of relation is thi
C-06-Q045To establish a many to many relationship between studentinfo and club, what is required?
C-06-Q046In the club table, the column 'Name' is the primary key. Why is it suitable?

C-06 — Database Management System — সব প্রশ্ন দেখুন (143টি) →