Lars,
You are absolutely right. MapInfo certainly known the changes. The
problem is - as you write yourself - that these information aren't made
availeble in any way.
The idea of a log-file is great. I would like to add another request, a
RowEditedHandler that could be "caught" within your MapBasic application. This
should be seen as a sort of trigger, so maybe we actual need as well a before as
an after trigger.
Within these it should be possible to detect which column was
updated.
So what we actual are asking for is a full support for "triggers" thru
the MapBasic interface ?!
And you are
right Oracle is just one of the possibilities. But for now, if you are using
MapInfo, I can only see a few.
Peter Horsbøll Møller
GIS Developer, MTM
Geographical
Information & IT
COWI A/S
Odensevej
95
DK-5260 Odense S.
Denmark
Tel +45 6311 4900
Direct +45 6311 4908
Mob +45 5156 1045
Fax +45 6311 4949
E-mail [EMAIL PROTECTED]
http://www.cowi.dk/gis
From: Lars I. Nielsen (GisPro)
[mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 04, 2006 2:49
PM
To: mapinfo-l@lists.directionsmag.com
Cc: Peter Horsbøll
Møller; Mathew Linnane
Subject: Re: [MI-L] Auditing edits made to
mapinfo tables.
I beg to differ.
MapInfo Pro knows exactly what records and
fields and graphical objects have been edited at any time. The only thing
MapInfo Pro's not good at, is making this information available to everyone
else.
The illusive "transaction files" (TDA, TIN and TMA) contains the
information of what edits have been made. Only problem: they're locked when they
exist, and deleted when closed. Otherwise I think it would be perfectly
feasiable to utilize these to generate an audit trail of some kind.
I'll
make a simple feature suggestion for MI Pro 9.0 : have Pro add some log of all
edits to a <table name>.log whenever edits are committed. The log file
should be in a known, dense, maybe binary, format that could be utilized
programmatically. Maybe just rowid+field+timestamp. And add an option to turn
this feature on.
That said, I too think a more server based approach
would be a smarter option for a number of reasons, although I'm sure Oracle
isn't the only egg in that basket.
Best regards / Med venlig hilsen
Lars I. Nielsen
GisPro
Peter Horsbøll Møller wrote:
Mathew,
MapInfo isn't that good at these kind of things, not when working in
the native tab format. You would need to write your own tools for doing all
the operations - that would be quite a job.
I would recommend using a Spatial Database in stead. You can then make
the database system keep track of all the changes, even tore them in a
separate table, so that you have access to the previous version of every
record.
MapInfo 8.0 introduced support for Oracle Workspaces. This is actual
exactly what you are looking for. You can setup a table to keep track of every
change, and this can be done from within MapInfo. The changes at stored in a
separate table that with a small amount of work can be opened and viewed in
the map as well.
Peter Horsbøll Møller GIS Developer, MTM Geographical Information & IT COWI A/S
Odensevej 95 DK-5260 Odense S. Denmark
Tel +45 6311 4900 Direct +45 6311 4908 Mob +45 5156 1045 Fax +45 6311 4949 E-mail [EMAIL PROTECTED] http://www.cowi.dk/gis
I need to create
an audit trail of all edits made to a certain mapinfo table. The Audit trail must
include user ID,
Date, Time etc. Can mapinfo facilitate any form of auditing? All ideas would
help.
Regards,
Mathew
Linnane
GIS/LIS
Assets Officer.
Queanbeyan City
Council.
257 Crawford
Street
Queanbeyan NSW
2620.
Bus: (02) 6298
0205
Fax: (02) 6297
4044
Mob: 0412 565
552
Email: [EMAIL PROTECTED]
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