pulling data from local DBs into network DB

hey guys, i'm just curious. i know that from a local machine with access to a network i can load data from the local database to the network database by setting the connection.

can i, from the network DB pull the data from the local machines? inversion of control so to speak
developingprogrammerAsked:
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Jim Dettman (Microsoft MVP/ EE MVE)Connect With a Mentor President / OwnerCommented:
<<so let's say i install the application on the desktop on every computer, could you give me the sample code for>>

There's no real "code" to speak of.

At it's simplest, I would install the app in the same location, say C:\myApp\myApp.MDB on every client.   That way, you always know where it is.

As for the reference, you need the machine name and depending on your security, might use the hidden admin share. So in your code, you create a table link with:

 \\<machine name>\C$\myApp\myApp.MDB

The other way to do it would be to create a share on the client PC to point to the DB when you install it.  Say it was called 'myAppShareName'

Then in your app, you simply do:

  \\<machine name>\myAppShareName\myApp.MDB

Beyond that, things get really complex if on the fly, you want to determine the users special folders through windows (say they installed it on their desktop) and you can run into a bunch of security issues.

  One thing is that their special folders (like the desktop, MyDocuments, etc) may not even be on their machine as the domain may be redirecting home folders and/or using romaning profiles.  That's why I'd stay away from doing that.

 Personally, I'd use one of the two methods above and probably the second to avoid the use of the admin share, which requires admin priv's on for the client station.

 With the other approach, you can control the share permissions and set it up for "everyone".

Jim.
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
I'm sure you can if ... the Network can 'see' the local machine.
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developingprogrammerAuthor Commented:
ok, thanks databaseMX, could you share with me the VBA code i can write so that when i run this code from the database on the network it will go into all the different local machines and pull the data? thanks!! = ))
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Jim Dettman (Microsoft MVP/ EE MVE)Connect With a Mentor President / OwnerCommented:
<<ok, thanks databaseMX, could you share with me the VBA code i can write so that when i run this code from the database on the network it will go into all the different local machines and pull the data? thanks!! = )) >>

 It's no different then your local DB to a "network" DB; it's just a matter of a path.

 You network DB is reached either with a mapped drive or UNC (\\server\path) convertions.

 You can either:

a. create a linked table definition using that

b. use the OpenDatabase() method in DAO.

 I would probably go for b simply because it's easir to work with multiple table (and assuming your going to do this all in code).

Jim.
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Vadim RappConnect With a Mentor Commented:
Yes, you can. The whole difference is that when you upload the data from local db on machine A to network db on machine B, you use something like this:

open connection to B
insert into B.database.table(columns) select columns from database.table

On the remote it would be like this:

open connection to A
insert into database.table(columns) select columns from A.database.table
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
Sorry .... guess I completely missed the initial response.

"could you share with me the VBA code"
Sorry, I don't have such code per se.

mx
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developingprogrammerAuthor Commented:
i see thanks guys!! and no probs MX, you've helped me heaps and heaps of times already haha = ))

hrmm, how do i get the path of the local machine? i'm sorry i know it's a very noob networking question but i'm a noob!! = P
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Jim Dettman (Microsoft MVP/ EE MVE)Connect With a Mentor President / OwnerCommented:
<<rmm, how do i get the path of the local machine?>>

 Well that as they say is the $100 question.

 You could:

1. Keep the paths in a table.
2. Always have the DB in a specific location on the client.
3. Scan the clients HD for the file.
4. Have something on the client that points to where the file was installed, which you then read (registry entry, file out on disk, etc).

Jim.
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Connect With a Mentor Database ArchitectCommented:
" i know it's a very noob networking question"
Not really ...
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developingprogrammerAuthor Commented:
thanks guys!!

so let's say i install the application on the desktop on every computer, could you give me the sample code for
1) how would i pull the path name cause it would be "username/desktop" where the username keeps changing right?
2) so i store the value from solution 1) in a table. what code do i use then to pull the data from the local apps into the network app?

if yall could give me some sample code to work with for 1) and 2) that would be great!! thanks guys!! = ))
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developingprogrammerAuthor Commented:
great! thanks Jim! i need a bit more time to implement everything else in my project and then implement this. let me get to that stage and revert back to yall. thanks!!
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developingprogrammerAuthor Commented:
sorry guys, need a bit more time! = )
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developingprogrammerAuthor Commented:
guy need more time as still not at the finishing stages of the project yet sorry!
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
np. thx for update.
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developingprogrammerAuthor Commented:
hey guys, i'm sorry but i don't have the bandwidth to implement this now. however i've saved this under my personal knowledge and will be revisiting this to implement it once my project is finished.

i'm so so sorry for the delayed response and hope yall will still continue helping me! = )
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
no problem ...
Thanks for using Experts Exchange .


mx
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developingprogrammerAuthor Commented:
Thank YOU for help me so much all along DatabaseMX! = )
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DatabaseMX (Joe Anderson - Microsoft Access MVP)Database ArchitectCommented:
You are certainly welcome ...
Clearly it has been a team effort, including yourself and other EE experts :-)
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developingprogrammerAuthor Commented:
= )) I wanna help out too when I get better!! After reading the whole of leban's site, allenbrowne's site, databasedecelopment.co.uk's site and then perhaps the book on SQL that Christian recommended me previously = ) and I want to be super good in objective C too so I can help out there too!! Thanks DatabaseMX!! = ))
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