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Create a view of all students who missed a quiz or a test. Display the student...

  1. Create a view of all students who missed a quiz or a test. Display the student id, student name, event id number and date.   Name the view MissedEvents.

      a. What code did you write for this view? Display the contents of the view here:

      b. Display the contents of the table when you execute the view. Be sure the query along with the result set are displayed. Insert your snip here:

*************************************************************

DATABASE

************************************************************


#---Create and open the database

drop database if exists Class;

CREATE DATABASE Class;


#-- Using the database

USE Class;

# create student table


DROP TABLE IF EXISTS student;

CREATE TABLE student

(
  
name VARCHAR(20) NOT NULL,
  
gender ENUM('F','M') NOT NULL,
  
student_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  
PRIMARY KEY (student_id)

);

# create grade event table

DROP TABLE IF EXISTS grade_event;

CREATE TABLE grade_event

(
  
date DATE NOT NULL,
  
category ENUM('T','Q') NOT NULL,
  
event_id INT UNSIGNED NOT NULL AUTO_INCREMENT,
  
PRIMARY KEY (event_id)

);

# create score table


# The PRIMARY KEY comprises two columns to prevent any combination
# of event_id/student_id from appearing more than once.


DROP TABLE IF EXISTS score;


CREATE TABLE score

(
  
student_id INT UNSIGNED NOT NULL,
  
event_id INT UNSIGNED NOT NULL,
  
score INT NOT NULL,
  
PRIMARY KEY (event_id, student_id),
  
INDEX (student_id),
  
FOREIGN KEY (event_id) REFERENCES grade_event (event_id),
  
FOREIGN KEY (student_id) REFERENCES student (student_id)

);

# create absence table


DROP TABLE IF EXISTS absence;

CREATE TABLE absence

(
  
student_id INT UNSIGNED NOT NULL,
  
date DATE NOT NULL,
  
PRIMARY KEY (student_id, date),
  
FOREIGN KEY (student_id) REFERENCES student (student_id)

);

#--Populate the student table


INSERT INTO student VALUES ('Megan','F',NULL);

INSERT INTO student VALUES ('Joseph','M',NULL);

INSERT INTO student VALUES ('Kyle','M',NULL);

INSERT INTO student VALUES ('Katie','F',NULL);

INSERT INTO student VALUES ('Abby','F',NULL);

INSERT INTO student VALUES ('Nathan','M',NULL);

INSERT INTO student VALUES ('Liesl','F',NULL);

INSERT INTO student VALUES ('Ian','M',NULL);

INSERT INTO student VALUES ('Colin','M',NULL);

INSERT INTO student VALUES ('Peter','M',NULL);

INSERT INTO student VALUES ('Michael','M',NULL);

INSERT INTO student VALUES ('Thomas','M',NULL);

INSERT INTO student VALUES ('Devri','F',NULL);

INSERT INTO student VALUES ('Ben','M',NULL);

INSERT INTO student VALUES ('Aubrey','F',NULL);

INSERT INTO student VALUES ('Rebecca','F',NULL);

INSERT INTO student VALUES ('Will','M',NULL);

INSERT INTO student VALUES ('Max','M',NULL);

INSERT INTO student VALUES ('Rianne','F',NULL);

INSERT INTO student VALUES ('Avery','F',NULL);

INSERT INTO student VALUES ('Lauren','F',NULL);

INSERT INTO student VALUES ('Becca','F',NULL);

INSERT INTO student VALUES ('Gregory','M',NULL);

INSERT INTO student VALUES ('Sarah','F',NULL);

INSERT INTO student VALUES ('Robbie','M',NULL);

INSERT INTO student VALUES ('Keaton','M',NULL);

INSERT INTO student VALUES ('Carter','M',NULL);

INSERT INTO student VALUES ('Teddy','M',NULL);

INSERT INTO student VALUES ('Gabrielle','F',NULL);

INSERT INTO student VALUES ('Grace','F',NULL);

INSERT INTO student VALUES ('Emily','F',NULL);

INSERT INTO student VALUES ('Rachel','F',NULL);


#--Populate grade event table

INSERT INTO grade_event VALUES('2015-09-03', 'Q', NULL);
INSERT INTO grade_event VALUES('
2015-09-06', 'Q', NULL);
INSERT INTO grade_event VALUES('
2015-09-09', 'T', NULL);
INSERT INTO grade_event VALUES('
2015-09-16', 'Q', NULL);
INSERT INTO grade_event VALUES(
'2015-09-23', 'Q', NULL);
INSERT INTO grade_event VALUES('
2015-10-01', 'T', NULL);


#--Populate the score table


INSERT INTO score VALUES (1,1,20);

INSERT INTO score VALUES (3,1,20);

INSERT INTO score VALUES (4,1,18);

INSERT INTO score VALUES (5,1,13);

INSERT INTO score VALUES (6,1,18);

INSERT INTO score VALUES (7,1,14);

INSERT INTO score VALUES (8,1,14);

INSERT INTO score VALUES (9,1,11);

INSERT INTO score VALUES (10,1,19);

INSERT INTO score VALUES (11,1,18);

INSERT INTO score VALUES (12,1,19);

INSERT INTO score VALUES (14,1,11);

INSERT INTO score VALUES (15,1,20);

INSERT INTO score VALUES (16,1,18);

INSERT INTO score VALUES (17,1,9);

INSERT INTO score VALUES (18,1,20);

INSERT INTO score VALUES (19,1,9);

INSERT INTO score VALUES (20,1,9);

INSERT INTO score VALUES (21,1,13);

INSERT INTO score VALUES (22,1,13);

INSERT INTO score VALUES (23,1,16);

INSERT INTO score VALUES (24,1,11);

INSERT INTO score VALUES (25,1,19);

INSERT INTO score VALUES (26,1,10);

INSERT INTO score VALUES (27,1,15);

INSERT INTO score VALUES (28,1,15);

INSERT INTO score VALUES (29,1,19);

INSERT INTO score VALUES (30,1,17);

INSERT INTO score VALUES (31,1,11);

INSERT INTO score VALUES (1,2,17);

INSERT INTO score VALUES (2,2,8);

INSERT INTO score VALUES (3,2,13);

INSERT INTO score VALUES (4,2,13);

INSERT INTO score VALUES (5,2,17);

INSERT INTO score VALUES (6,2,13);

INSERT INTO score VALUES (7,2,17);

INSERT INTO score VALUES (8,2,8);

INSERT INTO score VALUES (9,2,19);

INSERT INTO score VALUES (10,2,18);

INSERT INTO score VALUES (11,2,15);

INSERT INTO score VALUES (12,2,19);

INSERT INTO score VALUES (13,2,18);

INSERT INTO score VALUES (14,2,18);

INSERT INTO score VALUES (15,2,16);

INSERT INTO score VALUES (16,2,9);

INSERT INTO score VALUES (17,2,13);

INSERT INTO score VALUES (18,2,9);

INSERT INTO score VALUES (19,2,11);

INSERT INTO score VALUES (21,2,12);

INSERT INTO score VALUES (22,2,10);

INSERT INTO score VALUES (23,2,17);
INSERT INTO score VALUES (24,2,19);

INSERT INTO score VALUES (25,2,10);

INSERT INTO score VALUES (26,2,18);

INSERT INTO score VALUES (27,2,8);

INSERT INTO score VALUES (28,2,13);

INSERT INTO score VALUES (29,2,16);

INSERT INTO score VALUES (30,2,12);

INSERT INTO score VALUES (31,2,19);

INSERT INTO score VALUES (1,3,88);

INSERT INTO score VALUES (2,3,84);

INSERT INTO score VALUES (3,3,69);

INSERT INTO score VALUES (4,3,71);

INSERT INTO score VALUES (5,3,97);

INSERT INTO score VALUES (6,3,83);

INSERT INTO score VALUES (7,3,88);
INSERT INTO score VALUES (8,3,75);

INSERT INTO score VALUES (9,3,83);

INSERT INTO score VALUES (10,3,72);
INSERT INTO score VALUES (11,3,74);

INSERT INTO score VALUES (12,3,77);

INSERT INTO score VALUES (13,3,67);
INSERT INTO score VALUES (14,3,68);

INSERT INTO score VALUES (15,3,75);

INSERT INTO score VALUES (16,3,60);

INSERT INTO score VALUES (17,3,79);

INSERT INTO score VALUES (18,3,96);

INSERT INTO score VALUES (19,3,79);

INSERT INTO score VALUES (20,3,76);

INSERT INTO score VALUES (21,3,91);

INSERT INTO score VALUES (22,3,81);

INSERT INTO score VALUES (23,3,81);

INSERT INTO score VALUES (24,3,62);

INSERT INTO score VALUES (25,3,79);

INSERT INTO score VALUES (26,3,86);

INSERT INTO score VALUES (27,3,90);

INSERT INTO score VALUES (28,3,68);

INSERT INTO score VALUES (29,3,66);

INSERT INTO score VALUES (30,3,79);

INSERT INTO score VALUES (31,3,81);

INSERT INTO score VALUES (2,4,7);

INSERT INTO score VALUES (3,4,17);

INSERT INTO score VALUES (4,4,16);

INSERT INTO score VALUES (5,4,20);

INSERT INTO score VALUES (6,4,9);

INSERT INTO score VALUES (7,4,19);

INSERT INTO score VALUES (8,4,12);

INSERT INTO score VALUES (9,4,17);

INSERT INTO score VALUES (10,4,12);

INSERT INTO score VALUES (11,4,16);

INSERT INTO score VALUES (12,4,13);

INSERT INTO score VALUES (13,4,8);

INSERT INTO score VALUES (14,4,11);

INSERT INTO score VALUES (15,4,10);

INSERT INTO score VALUES (16,4,20);

INSERT INTO score VALUES (18,4,11);

INSERT INTO score VALUES (19,4,15);

INSERT INTO score VALUES (20,4,17);

INSERT INTO score VALUES (21,4,13);

INSERT INTO score VALUES (22,4,20);

INSERT INTO score VALUES (23,4,13);

INSERT INTO score VALUES (24,4,12);
INSERT INTO score VALUES (25,4,10);

INSERT INTO score VALUES (26,4,15);

INSERT INTO score VALUES (28,4,17);

INSERT INTO score VALUES (30,4,11);

INSERT INTO score VALUES (31,4,19);

INSERT INTO score VALUES (1,5,15);

INSERT INTO score VALUES (2,5,12);

INSERT INTO score VALUES (3,5,11);

INSERT INTO score VALUES (5,5,13);

INSERT INTO score VALUES (6,5,18);

INSERT INTO score VALUES (7,5,14);

INSERT INTO score VALUES (8,5,18);

INSERT INTO score VALUES (9,5,13);

INSERT INTO score VALUES (10,5,14);

INSERT INTO score VALUES (11,5,18);

INSERT INTO score VALUES (12,5,8);

INSERT INTO score VALUES (13,5,8);

INSERT INTO score VALUES (14,5,16);

INSERT INTO score VALUES (15,5,13);

INSERT INTO score VALUES (16,5,15);

INSERT INTO score VALUES (17,5,11);

INSERT INTO score VALUES (18,5,18);

INSERT INTO score VALUES (19,5,18);
INSERT INTO score VALUES (20,5,14);

INSERT INTO score VALUES (21,5,17);

INSERT INTO score VALUES (22,5,17);

INSERT INTO score VALUES (23,5,15);

INSERT INTO score VALUES (25,5,14);

INSERT INTO score VALUES (26,5,8);

INSERT INTO score VALUES (28,5,20);

INSERT INTO score VALUES (29,5,16);

INSERT INTO score VALUES (31,5,9);

INSERT INTO score VALUES (1,6,100);

INSERT INTO score VALUES (2,6,91);

INSERT INTO score VALUES (3,6,94);

INSERT INTO score VALUES (4,6,74);

INSERT INTO score VALUES (5,6,97);

INSERT INTO score VALUES (6,6,89);

INSERT INTO score VALUES (7,6,76);

INSERT INTO score VALUES (8,6,65);

INSERT INTO score VALUES (9,6,73);

INSERT INTO score VALUES (10,6,63);

INSERT INTO score VALUES (11,6,98);

INSERT INTO score VALUES (12,6,75);

INSERT INTO score VALUES (14,6,77);

INSERT INTO score VALUES (15,6,62);

INSERT INTO score VALUES (16,6,98);

INSERT INTO score VALUES (17,6,94);

INSERT INTO score VALUES (18,6,94);

INSERT INTO score VALUES (19,6,74);
INSERT INTO score VALUES (20,6,62);

INSERT INTO score VALUES (21,6,73);

INSERT INTO score VALUES (22,6,95);

INSERT INTO score VALUES (24,6,68);

INSERT INTO score VALUES (25,6,85);

INSERT INTO score VALUES (26,6,91);
INSERT INTO score VALUES (27,6,70);

INSERT INTO score VALUES (28,6,77);

INSERT INTO score VALUES (29,6,66);

INSERT INTO score VALUES (30,6,68);

INSERT INTO score VALUES (31,6,76);


#--Populate the absence table

INSERT INTO `absence` VALUES (3,'2015-09-03');

INSERT INTO `absence` VALUES (5,'2015-09-03');

INSERT INTO `absence` VALUES (10,'2015-09-06');

INSERT INTO `absence` VALUES (10,'2015-09-09');

INSERT INTO `absence` VALUES (17,'2015-09-07');

INSERT INTO `absence` VALUES (20,'2015-09-07');

INSERT INTO `absence` VALUES (22,'2015-09-15');

engineering   Computer-Science   
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Homework Answers

Answer #1

A VIEW is a virtual table, through which a selective portion of the data from one or more tables can be seen. Views do not contain data of their own. They are used to restrict access to the database or to hide data complexity. A view is stored as a SELECT statement in the database. DML operations on a view like INSERT, UPDATE, DELETE affects the data in the original table upon which the view is based.
Syntax:
CREATE OR REPLACE VIEW view_name
AS
SELECT column_list
FROM table_name [WHERE condition];

ANSWER:
CREATE OR REPLACE VIEW MissedEvents
AS
SELECT student.student_id, student.name, grade_event.event_id, absence.date FROM student, grade_event,absence WHERE student.student_id=absence.student_id and absence.date=grade_event.date;

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