4808436
Pregunta 1
Pregunta
Which of the following code would grant the role student_admin to a user named william?
Respuesta
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A - grant student_admin to william;
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B - grant to william student_admin;
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C - grant william student_admin;
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D - None of the above.
Pregunta 2
Pregunta
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);
Respuesta
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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);
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B - select h.subject_name, l.department_name, h.department_head, l.city from honours_subject h outer join location l on(subject_code);
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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);
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D - None of the above.
Pregunta 3
Pregunta
Q - Which of the following code will remove all the rows from the table LOCATIONS?
Respuesta
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A - DROP TABLE locations;
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B - DELETE TABLE locations;
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C - TRUNCATE TABLE locations;
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D - None of the above.
Pregunta 4
Pregunta
Which of the following is not true about modifying rows in a table?
Respuesta
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A - Existing rows in a table are modified using the UPDATE statement.
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B - You can update more than one row at a time.
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C - All the rows in a table are modified if you omit the WHERE clause.
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D - None of the above.
Pregunta 5
Pregunta
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?
Respuesta
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A - select honours_subject from students;
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B - select distinct honours_subject from students;
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C - select all honours_subject from students;
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D - select * from students;
Pregunta 6
Pregunta
Q 12 - Which of the following is not a character manipulation function?
Respuesta
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A - concat
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B - substr
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C - instr
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D - coalesce
Pregunta 7
Pregunta
Q 14 - Which of the following is true about inserting news rows to a table?
Respuesta
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A - You must list values in the default order of the columns in the table.
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B - You can also list the columns in the INSERT clause.
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C - You can use the INSERT statement to add rows from one table to another.
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D - All of the above.
Pregunta 8
Pregunta
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
Respuesta
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A SELECT e.name FROM emp e WHERE e.id NOT IN ( SELECT DISTINCT m.mgrId FROM emp m)
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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)
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C SELECT e.name FROM emp e WHERE e.id NOT IN ( SELECT m.mgrId FROM emp m)
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D SELECT e.name FROM emp e WHERE e.id NOT IN ( SELECT m.mgrId FROM emp m WHERE m.mgrId IS NOT NULL)
Pregunta 9
Pregunta
9. Which of the follwing statements is/are not true for SQL profiler?
Respuesta
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enables you to monitor events
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check if rows are being inserted properly
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check the performance of a stored procedure
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ALL answers are correct
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