1. Add a Validation Rule for Date of Birth so no one under the age of 18 can be added to the table. Hint: subtract the DOB from today's date and divide by 365.25 (watch the parentheses and pay attention to the arithmetic "order of operations" ) Do NOT use any functions here or in the queries that we did not discuss. (More below on using "today's date" function)
2. Make a Validation Rule to ensure that the Check Out Date is later than the Check In Date.
3. Make a select query with a calculated field for age, to list only guests between 20 and 40 years of age! Make sure to enter a range of ages in your table so you have something to display.
4. Make a Parameter query that allows the user to choose which birth month to display. So when the user is prompted for a birth month, they might type in 3, for March, and only the records which have a Date of Birth in March, will display.
5. Make an Update Query that will add the phrase "Free Champagne for this Preferred Guest" to the Comments field, but only if the guest stays for 8 days or more.
Attachment:- midt.rar