Statement 1: A tuple is a row in a relationStatement 2: Existence of multiple foreign keys in a same relation is possible(a) Both the statements are true(b) Statement 1 is correct but Statement 2 is false(c) Statement 1 is false but Statement 2 is correct(d) Both the statements are falseI have been asked this question during an interview.This question is from Introduction to the Relational Model topic in section Introduction to Relational Model and Sql of RDBMS

Statement 1: A tuple is a row in a relationStatement 2: Existence of m

1.	Statement 1: A tuple is a row in a relationStatement 2: Existence of multiple foreign keys in a same relation is possible(a) Both the statements are true(b) Statement 1 is correct but Statement 2 is false(c) Statement 1 is false but Statement 2 is correct(d) Both the statements are falseI have been asked this question during an interview.This question is from Introduction to the Relational Model topic in section Introduction to Relational Model and Sql of RDBMS
Answer» The correct answer is (a) Both the statements are true To elaborate: A tuple is a row is a relation. There can exist multiple FOREIGN KEYS in the same relation because there can exist multiple ATTRIBUTES in the relation that are primary keys in TWO or more other relations.

Discussion

No Comment Found

Related InterviewSolutions

Which of the following cannot be used to modify the data in a database(a) update(b) insert(c) delete(d) dropThe question was asked in semester exam.This interesting question is from Modification of Database topic in chapter Introduction to Relational Model and Sql of RDBMS
Scalar Subqueries can be used in the SQL update statement when they are used under the ____ clause(a) where(b) with(c) set(d) endThis question was addressed to me in semester exam.The query is from Modification of Database in section Introduction to Relational Model and Sql of RDBMS
State true or false: We cannot write a where clause under an update command(a) True(b) FalseI have been asked this question by my school teacher while I was bunking the class.This interesting question is from Modification of Database in section Introduction to Relational Model and Sql of RDBMS
To change a value in a tuple without changing all the values in the tuple, we use the _____ statement(a) insert(b) insert some(c) update(d) alterI have been asked this question in an interview for job.I'd like to ask this question from Modification of Database in section Introduction to Relational Model and Sql of RDBMS
What is the format of entering date into a database while inserting data into it?(a) YYYY-MM-DD(b) “YYYY-MM-DD”(c) ‘YYYY-MM-DD’(d) “DD-MM-YYYY”This question was posed to me in an international level competition.My question is taken from Modification of Database in portion Introduction to Relational Model and Sql of RDBMS
How many relations can a delete command operate on?(a) 0(b) 1(c) 2(d) Infinitely manyThis question was addressed to me in an internship interview.This interesting question is from Modification of Database in chapter Introduction to Relational Model and Sql of RDBMS
SQL subqueries that can occur wherever a value is permitted provided the subquery gives only one tuple with a single attribute are called _________(a) Exact Subqueries(b) Vector Subqueries(c) Positive Subqueries(d) Scalar SubqueriesThe question was asked in quiz.My enquiry is from Nested Subqueries topic in section Introduction to Relational Model and Sql of RDBMS
State true or false: We can use Subqueries inside the from clause(a) True(b) FalseThe question was posed to me in an international level competition.My enquiry is from Nested Subqueries in division Introduction to Relational Model and Sql of RDBMS
The _________ construct returns true if the argument in the sub-query is void of duplicates(a) not null(b) not unique(c) unique(d) nullThis question was posed to me during an interview.I'd like to ask this question from Nested Subqueries in chapter Introduction to Relational Model and Sql of RDBMS
What is a correlated sub-query?(a) An independent query that uses the correlation name of another independent query.(b) A sub-query that uses the correlation name of an outer query(c) A sub-query that substitutes the names of the outer query(d) A sub-query that does not depend on its outer query’s correlation namesThe question was asked by my college professor while I was bunking the class.This intriguing question originated from Nested Subqueries in portion Introduction to Relational Model and Sql of RDBMS

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment