Page 73 - Computing book 6

Handling Databases – MS Access Class 6

After entering the fields name and assigning them their relevant data type save the table and you
will notice that a dialogue box will appear with the exclamation mark suggesting:

At this point, click CANCEL and right-click on the EmployeeID row and
click on Primary Key to make the EmployeeID the Primary Key of this
table.

Now we will work with One-to-One Relationship in MS Access. This relationship is used to relate one
record from one table to one and only one record in another table.

Go to the Database Tools tab:
1. Click on the Relationships option.
2. Select tblEmployee and tblHRData
holding the shift key and then click on
the Add button to add them to our
view and then close the Show Table
dialogue box.
3. To create a relationship between these two
tables, use the mouse, and click and hold the
EmployeeID field from tblEmployee and drag and
drop that field on the field we want to relate by
hovering the mouse right over EmployeeID from
tblHRData. When you release your mouse
button, Access will then open the Edit
Relationships window.
4. The above window relates
EmployeeID of tblEmployee to
EmployeeID of tblHRData. Now click
on the Create button and now these
two tables are related.
5. The relationship is now saved
automatically and there's no need to
click on the Save button. Now that we
have the most basic of relationships
created, let us now go to the table side
to see what has happened with this
relationship.
6. Open and enter 5 random records of
employees in the tblEmployees table.

The City School /Academics/Computing Curriculum/Class 6/2020-2021 Page 72 of 94