User's Manual
Creating & Deleting
Deleting Records
6
6-11
Deleting Records
DPC/TRACK allows the deletion of records from your database to help you keep
up-to-date with changes in your plant. If you’re not absolutely positive that a
record should be deleted, don’t delete it. Record deletion is a nonrecoverable
process. Also keep in mind that what seems to be unneeded today, may in fact be
required at a later date for audit purposes. The subsections that follow discuss the
procedures for deleting the various kinds of records within DPC/TRACK.
Deleting Tag ID Records
Like creating Tag IDs, deleting Tag ID records is handled via the Change screen
(accessed via the Change... button on the Instrument View screen). Let’s look
at an example. Note that when a Tag ID record is deleted, any associated Test
Results records are not deleted—they are marked as “Excluded”.
Example 6.3: Deleting a Tag ID Record
In this example, we will delete the three Tag ID records we created in Example
6.1.
1. Perform a Quick Search (via the Tags/Instruments button on the Main
Menu) to display the three Tag ID records we created in Example 6.1 (Ex 6.1
Tag1, Ex 6.1 Tag2, and Ex 6.1 Tag3). You may do this by entering “Ex 6.1”
(excluding the quotes) in the Tag ID field of the Instrument Search screen
and employing the Approx operator.
The records are displayed using the Instrument View screen.
2. Select the Change... button. The Change screen appears, displaying the first
Tag ID name in the Tag ID field.
3. Select the Delete... button. You are prompted to confirm the record deletion.
4. Select Yes. The Instrument View screen appears.
In the same manner as just described, delete the remaining two Tag ID records.
When you are finished deleting the records, select the Main Menu button to
return to the Main Menu.
Note that had any Test Results records been associated with any of these Tag IDs,
the Test Results records would not be deleted. The Test Results records would
become “orphans” in that they would no longer be associated with a Tag ID. For a
discussion of orphan Test Results, see Chapter 7, “Changing Data.”