ICT3612 Assignment 3 2024 - DUE 15 July 2024

[Date]




ICT3612 Assignment
3 2024 - DUE 15 July
2024
QUESTIONS AND ANSWERS

,ICT3612 Assignment 3 2024 - DUE 15 July 2024

Question 1 (2 marks)
Which of the following is an aggregate expression that will find the oldest date
in the invoiceDate column?
1. MIN(invoiceDate)
2. MAX(invoiceDate)
3. HIGH(invoiceDate)
4. LOW(invoiceDate)
2. MAX(invoiceDate)
This aggregate function retrieves the maximum (oldest) date from the invoiceDate
column.


Question 2 (2 marks)
Which of the following LIMIT clauses will return a maximum of five rows
starting with the eleventh row in the result set? Downloaded by Corona Virus
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1. LIMIT 10, <= 5
2. LIMIT 11, <= 5
3. LIMIT 10, 5
4. LIMIT 11, 5
The correct answer for Question 2 is:
4. LIMIT 11, 5
This LIMIT clause will start at the eleventh row and return a maximum of five
rows from that point onward in the result set.


Question 3 (2 marks)

, When coded in a WHERE clause, which search condition will return invoices
when paymentDate isn’t null and invoiceTotal is greater than or equal to 500?
1. paymentDate IS NULL AND invoiceTotal > 500
2. paymentDate IS NOT NULL OR invoiceTotal >= 500
3. NOT (paymentDate IS NULL AND invoiceTotal <= 500)
4. paymentDate IS NOT NULL AND invoiceTotal >= 500
The correct answer for Question 3, which will return invoices when paymentDate
isn’t null and invoiceTotal is greater than or equal to 500, is:
4. paymentDate IS NOT NULL AND invoiceTotal >= 500
This condition ensures that both paymentDate is not null (indicating payment has
been made) and invoiceTotal is $500 or more.


Question 4 (1 mark)
Which of the following is not a comparison operator in a SQL statement?
1. <>
2. !=
3. =
4. >
The correct answer for Question 4 is:
2. !=
In SQL, the "!=" operator is not a standard comparison operator. Instead, "<>",
"=", and ">" are valid comparison operators commonly used in SQL statements.


Question 5 (1 mark)
If introduced as follows, the subquery can return which of the values listed
below? FROM (subquery)
1. a single value