KEYWORDS

Do it now activity

1. Understand how to create calculated fields on Forms2. Understand the purpose of automation of processes

LEARNINGOBJECTIVES

How will you create a simple query that returns all of the students details?

Once you have logged on open your database and create the query

SecurityPasswordData protection act

If statementIsNullMessage Box

1. Understand how to create calculated fields on Forms

2. Understand the purpose of automation of processes

Learning Objectives

1.Create calculated field to create a running total and generate a date based on a previous date

2.Generate age based on DOB and auto generate group based on age

By the end of the lesson you will be able to …

=Fix(DateDiff("yyyy",[DOB],Now())+Int(Format(Now(),"mmdd")<Format([DOB],"mmdd")))

Generate age based on DOB field

Replace both [DOB] fields with the name of your date field that you want to generate the age from

This expression should be placed on your default value of the field you want the age to appear in

You will need to have a requery macro set up to run on lost focus of the last field you require the user to type in

=IIf([Age]>30 And [Age]<=60,"Group3“,"No Group")

Iif statement

This iif statement is used to generate the name of the group that the person will be assigned to based on their age. [Age] is the name of the field that holds the age that you will base the iif statement on – change this field name as necessary

This expression should be placed on the default value of the field that you want to store the group that the person is auto

assigned to.

You will need to have a requery macro assigned to the last field you want the user to type in for this to update and show

in the field

Group the person is assigned to if condition is met

Group the person is assigned to if condition is not

met

Condition checks if age is between two parameters

=IIf([Age]>30 And [Age]<=60,"Group3",IIf([Age]>20 And [Age]<=30,"Group2",IIf([Age]>=10 And [Age]<=20,"Group1","No Group")))

Nested iif statement

Nested version of the iif statement

which checks several conditions and assigns to a

choice of 3 groups based on these

conditions

If no conditions are met the user is assigned to No

Group

Calculated control – running total

Just add the two fields that

you want to add together

with a + symbol

between them

To access the expression

builder click on … next to

control in the data tab of the fields property

sheet

DMax("[Payment Date]","[TBL_Payments]","[Student ID]=‘” & [ID] & "'")

Dmax to find latest payment date based on the ID of the student selected on a form

This expression will also need to go into the calculated control of the field – click on … next to the control property of the field

where this data should be displayed

Field name

Table name

Student ID on the table

Student ID on the form

=DateAdd("m",1,DMax("[Payment Date]","[TBL_Payments]","[Student ID]=‘ " & [ID] & “ ‘ "))

Add 1 month to the latest payment date of the student

selected on the form

Adds 1 month to the latest payment date stored in the table

Expression name month Add 1

Update query to update the amount each student has

paidCreate a query based on TBL_Student – make it an update query and set it to update TBL_Student

Test the query by selecting a student on FRM_Payment and adding a payment – run the query it should update

the currently paid value in TBL_Student

Create a button on FRM_Payment and add an openQuery macro to run the update query when it is

clicked

Update this field to the value in the field called runningTotal on

FRM_Payment

Update this on the student with the same ID

as the student selected on FRM_Payment

Append query to add new payment to TBL_Payments

Create an append query that appends data to TBL_PaymentCreate the 4 fields shown

Test the query by creating a payment on FRM_Payment and running the query – it should add a payment to your TBL_Payment

Add a second openQuery macro to your button on FRM_Payment to run the query

KEYWORDS

LEARNINGOBJECTIVES

MB1(with help)

1.Create calculated field to create a running total and generate a date based on a previous date

1.Generate age based on DOB and auto generate group based on age

MB2(with pointers)

MB3(independently)

1. Understand how to create calculated fields on Forms2. Understand the purpose of automation of processes