Use calculated fields in Access. HR database part 5


https://youtu.be/tAEUGYAUaLw
In Microsoft Access, tables are the basic objects that store data. However, sometimes you may want to perform calculations on the data in the tables, such as adding, subtracting, multiplying, or dividing values. For example, you may want to calculate the total price of an order by multiplying the quantity and the unit price of each item. To do this, you can use calculated fields in your tables.

A calculated field is a field that derives its value from an expression that combines other fields or constants. You can create a calculated field by using the Field Properties pane in table design view. To create a calculated field, follow these steps:

– Open the table in design view and add a new field.
– In the Field Name box, type a name for the calculated field.
– In the Data Type box, select Calculated.
– In the Field Properties pane, click the Expression Builder button next to the Expression property.
– In the Expression Builder dialog box, build the expression for the calculated field by using the available operators, functions, fields, and constants. You can also type the expression directly in the Expression box.
– Click OK to close the Expression Builder dialog box and save the expression.
– Optionally, you can set other properties for the calculated field, such as Format, Decimal Places, Caption, etc.

After you create a calculated field, you can use it in queries, forms, reports, and other objects that use data from the table. However, you cannot edit or update the value of a calculated field directly. To change the value of a calculated field, you need to modify the expression or the values of other fields that are used in the expression.

To add a subform in Microsoft Access and use calculated fields, you can follow these steps:

1. Create a form that contains the main data, such as customer information, and save it.
2. Create another form that contains the related data, such as order details, and save it.
3. Open the main form in Design View and drag the subform from the Navigation Pane to the main form. A wizard will help you link the subform to the main form based on a common field, such as Customer ID.
4. Save and close the main form. You can now view or enter data in both forms at the same time.
Use calculated fields in Access. HR database part 5. Microsoft Access tutorial.
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