Data Validation and Turtle Graphics Quiz

What is the main purpose of data validation in a database?

• To automatically correct errors

• To ensure only accurate and relevant data is entered

• To make data entry quicker

• To block users from modifying data

Why does a validation rule trigger an error message?

• To alert the database administrator

• To remove incorrect entries

• To allow users to correct their input

• To prevent further data entry

Which validation rule prevents a required field from being left empty?

• Format check

• Presence check

• Length check

• Type check

What does a length check ensure?

• Data is in a correct format

• Data is within a certain range

• Data contains a specified number of characters

• Data is unique

Which validation rule ensures a field contains values within a set limit, such as numbers between 1 and 100?

• Length check

• Presence check

• Range check

• Type check

What is the function of a format check?

• To ensure data follows a specific pattern

• To prevent empty fields

• To restrict input to numbers only

• To prevent negative values

When is a type check most useful?

• Ensuring a name field has at least five letters

• Checking if a password contains special characters

• Verifying that only numbers are entered in a price field

• Ensuring a phone number is formatted correctly

What happens when invalid data is entered?

• An error message appears

• The data is stored but flagged as incorrect

• The incorrect data is removed automatically

• The system corrects the data automatically

What validation rule would prevent a student from entering an age of 200?

• Format check

• Range check

• Presence check

• Length check

What happens when turtle.Turtle().speed(10) is executed?

• Sets the pen width to 10

• Sets the turtle’s fastest speed

• Moves the turtle forward by 10 steps

• Changes the turtle’s shape