Download Midterm Exam II

COMP 3540 Advanced Web Design and Programming
Term Test II – Fall 2013
Student Name:
Student Number:
1. (11 marks) Fill in the blanks in each of the following.
a) A _______________ is a name/value pair that is stored in the browser.
b) Because HTTP is a _______________ protocol, most web applications need to use session tracking to
track each user’s session.
c) The _______________ pattern is commonly used to structure web applications that have significant
processing requirements.
d) A subclass can _______________ the superclass by adding new properties and methods. It can also
override a method from the superclass with its own version of the method.
e) An _______________ defines a set of public methods that can be implemented by a class. This does not
provide any code to implement the methods, but it provides the method names and parameter lists.
f) To work with the data in a database, you use _______________. To access and update the data in a
database, you use these _______________ statements.
g) To create a _______________ object that connects to a MySQL database, you use the
_______________ class with three arguments: DSN, username, and password.
h) Each table in a database should have a _______________ key that uniquely identifies each row.
i) An _______________ improves performance when MySQL searches for rows in the table.
j) A _______________ is used to combine columns from two or more tables into a result set based on the
conditions you specify.
k) A _______________ is special type of subpattern that must be matched for the overall pattern to be
matched.
2. (3 marks) Write a PHP statement to get the value for the cookie userid;
3. (3 marks) Write the PHP code to display all the elements of an array cart that is a session variable.
4. (3 marks) Write the PHP code to create an object of the class Category, access to the property comment and
invoke the method getName.
5. (3 marks) Define the class Employee that extends Person. Employee includes private ssn. Employee
includes a set method to set ssn, and a get method to return ssn.
6. (3 marks) The table products includes 5 columns: productID, categoryID, productCode, productName,
listPrice. Write a SQL statement to select all the rows in the descending order of categoryID where listPrice
is >= 400 and listPrice is < 1000.
7. (3 marks) Assuming the same table products in 6), another table categories includes 2 columns: categoryID,
categoryName. Write a SQL statement to obtain the category names of which list prices are >= 600.
8. (3 marks) Assuming the same table products in 6), write the PHP code to insert a row into the table. You
can use $db as a PDO object and use any appropriate values for columns.
9. (3 marks) Assuming the same table products in 6), write the PHP code to print all rows in the table. You
can use $db as a PDO object.
10. (3 marks) Assuming the same tables in 6) and 7), write the PHP code to determine if there is Guitar of
which list price is > 2000.
11. (3 marks) Write a PHP regular expression for a postal code. You should consider that the two parts of a
postal code can be separated by a space or spaces.
12. (3 marks) Write the PHP code that connects to MySQL on cs.tru.ca. This code should include try-catch and
it should print error message there is any error.
getCode
Functions:
setcookie
SQL aggregate functions:
getFile
session_set_cookie_params
AVG
getLine
session_start
SUM
getTrace
session_destroy
MIN
getTraceAsString
session_name
MAX
session_id
COUNT
session_write_close
session_regenerate_id
PDO methods:
is_a
query
property_exists
exec
method_exists
prepare
preg_match
PDOStatement methods:
SQL statements:
fetch
create table
bindValue
drop table
execute
select
fetchAll
insert into
rowCount
update
closeCursor
delete from
alter
Exception methods:
grant
getMessage