compression
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Forum home » Delegate support and help forum » Microsoft Access Training and help » Compression

Compression

resolvedResolved · Low Priority · Version 2007

Simon has attended:
Access Intermediate course
Access Advanced course

Compression

If you have multi-user access when is compression activated? Only after all users leave system

RE: Compression

Hi Simon,

Thank you for your question and welcome to the forum.

You must have the database open in Exclusive mode in order to use the Compact and Close feature in the Access options. So anyone else using the database would have to close it first.

I have put a link below:

http://office.microsoft.com/en-us/access-help/help-prevent-and-correct-database-file-problems-by-using-compact-and-repair-HA010235583.aspx

I hope this answers your question.

Regards

Simon

Fri 19 Aug 2011: Automatically marked as resolved.


 

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Access tip:

Calculating The Difference Between Dates

If you wish to calculate the time between two date fields, this can be done in a number of ways:

1. As a calculated field in a query
2. As a calculated control in a form or report
3. As a calculation in a VBA procedure.

The basic syntax to get the number of days between two dates is:

=[One Date Field] - [Another Date Field]

You can also use one of the following functions:

=Month([One Date Field] - [Another Date Field])
which calculates the number of months between the two fields

=Year([One Date Field] - [Another Date Field])
which calculates the number of years between the two fields.

Another function is the DateDiff() function.

It uses an argument to determine how the time interval is measured. For example:

=DateDiff("q",[One Date Field] - [Another Date Field])
returns the number of quarters between the two fields.

Other intervals that can be used in this expression are as follows:
"yyyy" - Years
"m" - Months
"d" - Days
"w" - Weekdays
"ww" - Weeks
"h" - Hours
"n" - Minutes
"s" - Seconds

View all Access hints and tips


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