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DBI202 Exam Questions and Answers Updated 2024

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DBI202 Exam Questions and Answers Updated 2024 A CASE SQL statement is which of the following? Select one: A way to establish a loop in SQL A way to establish a data definition in SQL All of the above A way to establish an IF-THEN-ELSE in SQL - Answer-A way to establish an IF-THEN-ELSE in S...

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DBI202 Exam Questions and Answers
Updated 2024


A CASE SQL statement is which of the following?


Select one:


A way to establish a loop in SQL


A way to establish a data definition in SQL


All of the above


A way to establish an IF-THEN-ELSE in SQL - Answer✔✔-A way to establish an IF-THEN-ELSE in

SQL


A domain of PaymentMethod attributes in Invoice relation have 2 types: Cash, Transfer. Which

statement is used to validate the data entries?


Select one:


...CHECK PaymentMethod = ('Cash','Transfer')


...CHECK PaymentMethod IN ('Cash','Transfer')


...CHECK (PaymentMethod IN ('Cash','Transfer')




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...CHECK (PaymentMethod = 'Cash' AND PaymentMethod = 'Transfer') - Answer✔✔-...CHECK

(PaymentMethod IN ('Cash','Transfer')


A relationship is when both participants in the relationship are the same entity set is called


Select one:


Ternary


N-ary


Binary


Unary - Answer✔✔-Unary


A trigger belongs to_______________


Select one:


a single table in the database


all tables in the database


none of the others


more than one table in the database - Answer✔✔-a single table in the database


Choose the correct statement.


Select one:


All of the others



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The syntax to remove a trigger is: DROP TRIGGER < trigger_name >


You can remove a trigger by dropping it or by dropping the trigger table.


Use ALTER TRIGGER to change the definition of a trigger - Answer✔✔-All of the others


Give the SQL statement: SELECT * FROM Worker WHERE first_name like '%a%'


Select one:


This statement is used to print details of the workers whose first_name begins with 'a'


This statement is used to print details of the workers whose first_name ends with 'a'


This statement is used to print details of the workers whose first_name begins and ends with 'a'


This statement is used to print details of the workers whose first_name contains 'a' -

Answer✔✔-This statement is used to print details of the workers whose first_name contains 'a'


How many tables may be included with a join?


Select one:


Four


One


Three


Two - Answer✔✔-Two


In SQL, Students(Stu_ID, Stu_Name, Stu_Age, Stu_Sex) . How can you return the number of

record in the "Students" table? Choose the correct

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answer(s).


Select one or more:


Select count (Stu_ID) from Students group by Stu_ID


Select * from Students


Select count(Stu_ID) from Students


Select count(*) from Students - Answer✔✔-Select count (Stu_ID) from Students group by

Stu_ID


Select count(Stu_ID) from Students


SELECT SUBSTRING('SQL_SERVER', 2, 3) AS 'Substring', len(SUBSTRING('SQL_SERVER', 2, 3)) AS

'x'


Select one:


Substring is 'SQL' and x=3


Substring is 'QL_' and x=3


Substring is '_S' and x=2


Substring is 'QL_' and x=2 - Answer✔✔-Substring is 'QL_' and x=3


SQL data definition commands make up a(n)___________.


Select one:


DML

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