Double data entry for data validation

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I am required by our Federal grant to design a data entry system whereby the
second round of data entry checks against the first round of data entry to
catch inconsistencies of data only entered once by hand. I have looked
through manuals and online but haven't found much info regarding setting up
Access for this. I tried to create two tables with a form for each. The
second form had a validation rule for each control that checked the value
entered in the second table against the value in the first table. This
hasn't worked, I get an error 'the expression [variable1] you entered in the
form's ValidationRule property contains the error The object doesn't contain
the Automation object 'variable1'.

Not only do I not have any idea what that means but I still don't know how
to get this set up for this. I have done this in Epi-Info and it was very
simple. Is Access not good for this?
 
Use two tables but add a Yes/No field called Verified to the main table.

Use two data entry forms with the second one labeled Verification Entry. On
close of the form have a nacro run an update query that check the two tables
as exact matches and updates the Verified flag in main table. Next query
deletes records from the verify table that are in the main and flagged as
verified. Next query to find unmatched records for a report printed for
supervisor review.

You might have a field in each table to record who did the data entry and
keep entry error stats.
 
I have tried several ways to do the update query as you suggest but each time
I end up automatically overwriting the main table with the verification entry
table. What am I doing wrong? If I follow you, the query is intended to
report those variables where the two tables match.

KARL DEWEY said:
Use two tables but add a Yes/No field called Verified to the main table.

Use two data entry forms with the second one labeled Verification Entry. On
close of the form have a nacro run an update query that check the two tables
as exact matches and updates the Verified flag in main table. Next query
deletes records from the verify table that are in the main and flagged as
verified. Next query to find unmatched records for a report printed for
supervisor review.

You might have a field in each table to record who did the data entry and
keep entry error stats.

Jose said:
I am required by our Federal grant to design a data entry system whereby the
second round of data entry checks against the first round of data entry to
catch inconsistencies of data only entered once by hand. I have looked
through manuals and online but haven't found much info regarding setting up
Access for this. I tried to create two tables with a form for each. The
second form had a validation rule for each control that checked the value
entered in the second table against the value in the first table. This
hasn't worked, I get an error 'the expression [variable1] you entered in the
form's ValidationRule property contains the error The object doesn't contain
the Automation object 'variable1'.

Not only do I not have any idea what that means but I still don't know how
to get this set up for this. I have done this in Epi-Info and it was very
simple. Is Access not good for this?
 
You just do a join on each field so that it pull only records that totaly
match. In design view of the query drag the Verified field to the grid and
only update it.

Use another query to pull records that do not have the Verified field
updated as these did not match.

Jose said:
I have tried several ways to do the update query as you suggest but each time
I end up automatically overwriting the main table with the verification entry
table. What am I doing wrong? If I follow you, the query is intended to
report those variables where the two tables match.

KARL DEWEY said:
Use two tables but add a Yes/No field called Verified to the main table.

Use two data entry forms with the second one labeled Verification Entry. On
close of the form have a nacro run an update query that check the two tables
as exact matches and updates the Verified flag in main table. Next query
deletes records from the verify table that are in the main and flagged as
verified. Next query to find unmatched records for a report printed for
supervisor review.

You might have a field in each table to record who did the data entry and
keep entry error stats.

Jose said:
I am required by our Federal grant to design a data entry system whereby the
second round of data entry checks against the first round of data entry to
catch inconsistencies of data only entered once by hand. I have looked
through manuals and online but haven't found much info regarding setting up
Access for this. I tried to create two tables with a form for each. The
second form had a validation rule for each control that checked the value
entered in the second table against the value in the first table. This
hasn't worked, I get an error 'the expression [variable1] you entered in the
form's ValidationRule property contains the error The object doesn't contain
the Automation object 'variable1'.

Not only do I not have any idea what that means but I still don't know how
to get this set up for this. I have done this in Epi-Info and it was very
simple. Is Access not good for this?
 

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