Which of the following code would grant the role student_admin to a user named william?
Responda
A - grant student_admin to william;
B - grant to william student_admin;
C - grant william student_admin;
D - None of the above.
Questão 2
Questão
Select the right query for retrieving records from the tables HONOURS_SUBJECT and LOCATIONS with a right outer join
HONOURS_SUBJECT(subject_code, subject_name, department_head);
LOCATIONS(subject_code, department_name, location_id, city);
Responda
A - select h.subject_name, l.department_name, h.department_head, l.city from honours_subject h on right outer join location l where(h.subject_code = l.subject_code);
B - select h.subject_name, l.department_name, h.department_head, l.city from honours_subject h outer join location l on(subject_code);
C - select h.subject_name, l.department_name, h.department_head, l.city from honours_subject h right outer join location l on(h.subject_code = l.subject_code);
D - None of the above.
Questão 3
Questão
Q - Which of the following code will remove all the rows from the table LOCATIONS?
Responda
A - DROP TABLE locations;
B - DELETE TABLE locations;
C - TRUNCATE TABLE locations;
D - None of the above.
Questão 4
Questão
Which of the following is not true about modifying rows in a table?
Responda
A - Existing rows in a table are modified using the UPDATE statement.
B - You can update more than one row at a time.
C - All the rows in a table are modified if you omit the WHERE clause.
D - None of the above.
Questão 5
Questão
Consider the following schema −
STUDENTS(student_code, first_name, last_name, email,
phone_no, date_of_birth, honours_subject, percentage_of_marks);
Which of the following query would display the distinct honours subjects in the STUDENTS table?
Responda
A - select honours_subject from students;
B - select distinct honours_subject from students;
C - select all honours_subject from students;
D - select * from students;
Questão 6
Questão
Q 12 - Which of the following is not a character manipulation function?
Responda
A - concat
B - substr
C - instr
D - coalesce
Questão 7
Questão
Q 14 - Which of the following is true about inserting news rows to a table?
Responda
A - You must list values in the default order of the columns in the table.
B - You can also list the columns in the INSERT clause.
C - You can use the INSERT statement to add rows from one table to another.
D - All of the above.
Questão 8
Questão
Given the following data definition, select all queries that return a list of employees who are not managers.
TABLE emp
id INTEGER NOT NULL PRIMARY KEY
mgrId INTEGER REFERENCES emp (id)
name VARCHAR(30) NOT NULL
Responda
A SELECT e.name FROM emp e
WHERE e.id NOT IN (
SELECT DISTINCT m.mgrId FROM emp m)
B SELECT e.name FROM emp e
WHERE e.id NOT IN (
SELECT DISTINCT m.mgrId FROM emp m WHERE m.mgrId IS NOT NULL)
C SELECT e.name FROM emp e
WHERE e.id NOT IN (
SELECT m.mgrId FROM emp m)
D SELECT e.name FROM emp e
WHERE e.id NOT IN (
SELECT m.mgrId FROM emp m WHERE m.mgrId IS NOT NULL)
Questão 9
Questão
9. Which of the follwing statements is/are not true for SQL profiler?
Responda
enables you to monitor events
check if rows are being inserted properly
check the performance of a stored procedure
ALL answers are correct
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