Code To Link Tables - Overwrite Specific Links

Oct 13, 2006

I searched and couldn't find anything on this specific issue.

I'm on the verge of designing a pretty big database and I've run into what may become a bit of a problem. There will probably be several backends in different locations. Should another backend ever be created or if the location for one changes, the user can use a form to refresh the links to the tables on that specific database.

The way I've done this so far is by having a piece of code that checks the tables for a connection string. If the table has a connection string, its a linked table, so the link gets deleted and replaced with the new link. Well this will no long work since there will be several backends and only 1 of them may need its tables relinked and using that code will delete all the table links, including the good ones.

Is there a way to make 'DoCmd.TransferDatabase' overwrite table names instead of giving the duplicate tables a number suffix? I think that doing this would be easier than retrieving the table names from the new backend and comparing them with the linked table names in the frontend so the old links could then be deleted.

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Locating A Backend And Automatically Creating The Links For Link Tables

Aug 25, 2006

Is there a way to just select like through a find dialog box, the location of a databases backend location and just automatically create all the links for the link tables...

The reason Im asking, is my boss wants the database to be on his laptop in the event that the network is down, and also so that he can work away from the company's location but I was showing him the implications of having it installed locally on his machine should his laptop go down....

So now I'm wondering if i could

1. do some automation that allows him to just choose the location of the databases backend that he would be working from, be it on the network or on his machine

and


2. using both backends to update or overwrite each other depending on which he was working from or did updates to..


Really would love all the help and input I can get on this... Im willing to work on developing a sample for this if nothing is exactly already out there so that it can be reposted cause i think this would be very useful to everyone's database applications.

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Oct 29, 2012

I found 2 examples of code to refresh my attached table link to sharepoint lists.

I have a scheduled task open my Access 2010 db and an autoexec macro runs and closes the db.

My problem is my tables disconnect from sharepoint 2010 and the update fails.

I added the code I found to a module and added a line in my macro to run the code. Now I cannot get the code to work.

Am I at least on the right track? I just want to know before I spend many hours getting this code to work.

These are the two locations of code I found.

[URL]

I think part of my problem is that I have a regular table that I add a txt file to that is not linked to sharepoint so I need to exclude it from the code.

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Link Tables Via Code

Feb 7, 2007

Hey everyone I'm new here but pretty familiar with Access etc. I am extrememl;y stumped on this and I have never attempted this so any answers and details would be helpful. As we all know this is a learn new things as you develop type of application or at least for me.

I have a database that exists in one building and is functionnig fine using linked tables (File/Get External Data/Link Tables) but I now need to make this same application work for multiple locations which each have its own tables that are seperate from each other location. I was thinking a Main form that opens with radio buttons and based on the one you select would determine which tables it would be linked to when it opens. I figured Radio1 be SEDC, Radio2 be SWDC.

I have a database I have setup as a storage database for just the tables for each location that are on different servers in each location to increase traffic speeds.

Example:

SEDC (RadioButton1)
SEDC Database is located on a erver with 50 different tables in it "//sedc1/data/shared/warehouse/SEDC Warehouse.mdb"

SWDC (RadioButton2)
SWDC Database is located on server with same tables in it but different data for that location "//swdc1/data/shared/warehouse/SWDC Warehouse.mdb"

So on So on...

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Feb 22, 2008

Dear all, imagine a table named "Database" with fields

Par1, Par2, ... ParN, Amount,

where most of the parameters in Par1,...ParN are in text format.
The structure of another table, "Criteria", is exactly like "Database" less "Amount" field.
Suppose we want to summarise "Amounts" from "Database" according to the sets of "Criteria", for each of its records. A set does not always include all of the fields, e.g. an empty field (or sort of wildcard) may mean that any value fits.
It seems like classical application of DSum function, but I've already spent a lot of time in desperate attempts to solve this problem and will highly appreciate your suggestions.

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Nov 8, 2004

HELP!!! I am getting quite desperate. I am a novice. I have made a database for customers, products, etc. They all have good relations. I have made a query where I can see who bought what and when and how much it costs. Now here's the problem. When my prices in my product list (this is the table of which the prices show up in my form) have to be altered (because of prices going up), it automaticaly changes the query and the form!! According to messages stated in this forum, I have opened the properties in the text boxes and changed the price fields, "enabled" to no, "locked" to yes, and the forms DataEntry to yes. Strangely in the North Wind example, the prices shown in the form (entry form), are extracted from the subformdetails table. But how can you extract something from a table if there is nothing in the table?? Totaly I have four tables (Orders, Orderdetails, Products and Customers) Alle these tables are joined on a one to many basis.
Please can somebody help me.....
Thank you
Anouk (Netherlands) :confused:

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Mar 17, 2015

I have a table, which contains many fields, around 90. Out of these 90 Fields, around 40 will be imported from an Excel sheet, which has same headers as the 40 field names in my table, in which they have to get copied.

So when I import data, it copies them as new records, instead what I am looking at is, the records in Excel and in Access table has a Unique Key, so when I import data, matching with this unique key, the fields should be overwritten into those records from Excel, instead of adding new records.

E.g:

Say I have 2 records in my access:

ID(auto generated) Fab_name Issue_ID Location Remarks Data_1 Data_2 Data_3
1 Fab1 193 NY Bug OC DC MC
2 Fab2 641 DRS Error AC KC FC

Now when I am importing data from Excel with the following records:

Fab_name Issue_ID Location Remarks
Fab1 193 NY - GRM Solved
Fab2 641 DRS - SGP Forwarded

So when I import the above data into my Access from Excel, based on Issue ID, it should update the values of different fields that are imported from Excel, leaving other fields (data_1, Data_2, Data_3) as it is.

And I need this to be written as a macro, so that user just has to choose the file, which he has to import.

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Sep 19, 2013

I have a PATIENT TABLE with PAT_ID Autonumber / Primary Key.I want to set up an Invoice and a Receipt. I know the fields I need. how many tables I should create and how they should be linked PROPERLY.

INVOICE TABLE would contain (field names and data type):
Invoice_ID Autonumber / Primary Key
PAT_ID Number (as the link to the Patient Table)
Invoice_Date Date/Time
Invoice_ Contact Text
Invoice_SentDate Date/Time
Invoice_Paid Date/Time
Invoice_Comments Memo (not to be printed on invoice just info for me)

[code]...

Note: The rest of the fields needed on the receipt are in the Patient table (i.e. services rendered to). For the receipt, the description of the service(s) will be limited to a standard text that will be set in a label on the report.

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Mar 5, 2008

I have recently learned how to link photos to a database using a form and a table listing the path to each photo. Is there anyway to format the records in the table so that when you click on the path the photo shows up?

I have browsed around past threads and have not found and answer.

Thanks

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Feb 20, 2008

I have a query where I am trying to set the where criteria expression using an unlinked table. The unlinked table name is INV DATES. The criteria field is [THE_DATE]. I cannot really link the fields for the two tables since I am using an expression. This design works, but it goes really slow.

Any ideas?

SELECT DISTINCT DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER, DSSAPP_FULL_WIP_PROD_STATS.OPERATION, DSSAPP_FULL_WIP_PROD_STATS.OPERATION_START_TIME, DSSAPP_FULL_WIP_PROD_STATS.OPERATION_END_TIME, DSSAPP_FULL_WIP_PROD_STATS.CURRENT_QUANTITY AS QUANTITY, DSSAPP_FULL_WIP_PROD_STATS.CURRENT_QUANTITY_TIME AS [DATE], DSSAPP_FULL_WIP_PROD_STATS.LOT_HOLD_FLAG, DSSAPP_FULL_WIP_PROD_STATS.ACTIVE_FLAG, [INV DATES].THE_DATE, [INV DATES].WEEK_NUMBER_IN_YEAR, [INV DATES].MONTH_NUMBER_IN_YEAR INTO ROXES
FROM DSSAPP_FULL_WIP_PROD_STATS, [INV DATES]
WHERE (((DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "R1*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "R2*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "R4*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "R5*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "RR" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "B0*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "B1*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "B2*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "B5*" Or (DSSAPP_FULL_WIP_PROD_STATS.LOT_NUMBER) Like "B4*") AND ((DSSAPP_FULL_WIP_PROD_STATS.OPERATION_START_TIME)<=[INV DATES]![THE_DATE]) AND ((DSSAPP_FULL_WIP_PROD_STATS.OPERATION_END_TIME)>[INV DATES]![THE_DATE] Or (DSSAPP_FULL_WIP_PROD_STATS.OPERATION_END_TIME) Is Null) AND ((DSSAPP_FULL_WIP_PROD_STATS.CURRENT_QUANTITY_TIME )>=Now()-600) AND ((DSSAPP_FULL_WIP_PROD_STATS.FACILITY)="STPPRD" Or (DSSAPP_FULL_WIP_PROD_STATS.FACILITY)="EPIPRD"))
ORDER BY DSSAPP_FULL_WIP_PROD_STATS.OPERATION;

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Creating Links In Tables

Dec 2, 2004

Hi all.

As i'm still what can be called a "newbie" in MS Access, maybe one of you wizards
can help me out with this.

I'm having a product table in ms access, containing a few columns. The regular stuff (type, ID, ..).
It also contains a column i want to store the links to their documentation to, called "download'.

The fields of that table are loaded into a data access page.

Now the data access page is loaded into the frame of an HTML page. Everything works well, but when it
comes to the download-field, i get no link, but a piece of code instead.

Now these links are relative links (not absolute ones). What i'm searching for (for quiete some time now), is a way to make the links show as normal links.

Is there anyone who could give me a hint or who can help me out with this?

Thank you very much in advance,

Kind regards

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May 20, 2005

I was recently doing a little Spring Cleaning in my database and deleting old tables and queries that were no longer used or had been for experimental purposes. Unfortunately, I unknowingly deleted a query that was being used by a report I still needed and it took me several hours to find and correct the problem.

Not wanting to repeat this mistake, I began searching for a way to display my reports, queries, and tables and all the objects each is linked to. I thought it would be nice, for instance, to have a hard copy list of all my queries that showed where they are derived from and what other objects reference them. Is there a way to do this?

I've tried using the "Relationships" button and working with the Documenter, but I haven't found what I'm looking for. I have also tried a Google search, but, admittedly, I may not be using the proper terminology to get good results.

Thanks for your time.

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Relative Links For Linked Tables

Jan 6, 2006

Hi,

I'm buliding an access system in which the forms and tables stored in seperate databases as such:

forms: \serverdirmyDatabase.mdb
tables: \serverdirdatamyTables.mdb

myDatabase has a load of linked tables from myTables. Problem; my network drives are mapped differently from the users, so the links do not work for me.

So - does anyone know how I can set up a relative link, so myDatabase looks for datamyTables? i.e. it looks from the source directory rather than checking the whole path back to the root?

Hope this is making sense . . .

Dave

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Do Links To External Tables Ever Get Dropped?

May 22, 2007

Once external tables have been linked to a database can the links ever get dropped accidentally.

ie should I test for missing links and recreate them programatically or assume that it will never happen?

It is easy enough to identify links which are present but any code which loops through the tabledefs will only identify links which are present.

I think the best approach, if this is necessary, would be to count the number of external links, compare the answer to what it should be, and refresh all the links if theree is a difference.

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Is There Any Way To Change (in Bulk) The Links For Linked Tables

Mar 14, 2008

I have heaps of Linked Tables and the main data bases are in My Documents.

My Documents is also the shared name but I need to change it to MyDocuments as the space fouls up some other stuff.

I have a feeling I will need to delete all the linked tables and do it again.:D

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Sep 24, 2004

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Would appreciate if responses can be directed to my email-id Satya_Nadiminti@infosys.com

Thanks,
Satya

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Feb 13, 2015

I have a club member registration application consisting of a program database and a data database. They reside in the same directory. There is an autoexec macro which runs at the beginning. This macro has to find the DATAdb and make sure that the required tables are linked (Not all tables). If it cannot find the DATAdb and then has to make a call to the user to use a different procedure.

Now to find the DATAdb I have used the following code that works. The function GetPathAndName parses the string db.name and outputs the path and name of the PROGdb. Up to here no problems.

Code:
GetPathAndName db.Name, FrontPath, dName

Then I use the following code to get the fullpath of the last database used and thereby find the path and name of the last DATAdb. The path of PROGdb is used in place of the existing path of DATAdb to check whether the file exists.

Code:
Dim rs As Recordset, cPath As String, cName As String
Set rs = CurrentDb.OpenRecordset("SELECT Database, Type " & _
"FROM MSysObjects " & _
"WHERE ((MsysObjects.Type) = 6) AND ((MsysObjects.Name) = 'MembersTbl') " & _
"ORDER BY MsysObjects.DateUpdate DESC;")

[Code] .....

As the final step I use the table definitions to refresh links that already exist and connect tables that are not linked The code is below. But I can not get it to work. It links 7 tables instead of 16 and when tested in different folder says invalid operation and so on. There is fundamental error some place but I could not figure it out.

Code:
On Error GoTo Error_Linking
Debug.Print "TableDefs.Count="; db.TableDefs.Count
For I = 0 To db.TableDefs.Count - 1
Debug.Print "TableDefs("; I; ").Connect="; db.TableDefs(I).Connect
Debug.Print "TableDefs("; I; ").Name="; db.TableDefs(I).Name

[Code] .....

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Dec 28, 2007

I have a FE database that on initial setup the user will enter the drive letter of the mapped location where the BE resides. The FE will then update all the linked tables to that path. This should work but for some reason the FE locks up (stops responding) when I test this. Any suggestions as to why. It doesn't stop responding until this part of the code:

tdf.Refreshlink

I have looked and it does change the link path, but it locks up.

Dim dbs As DAO.database
Dim dataPath As String
Dim tdf As DAO.TableDef
dataPath = Me.drive & ":IMP1_R2.2_be.mdb"
For Each tdf In dbs.TableDefs
'Not a MSys type table
'If the table has a connect string, it's a linked table.
If Len(tdf.Connect) > 0 Then
If InStr(tdf.name, "MSys") = 0 Then
tdf.Connect = ";DATABASE=" & dataPath
End If
err = 0
On Error Resume Next
tdf.RefreshLink
End If
Next tdf
DoCmd.Echo True, "Done"

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The only way I have been able to get rid of it is to create a new form with nothing in it, save it and then delete it.

Really frustrating!!!!

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Hi
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Anyone?

eroness

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i need combo boxes on my forms in the front end to be able to access this data.

is there a way in code, once the temp tables are built, to create a 'link tables' type of setup?

my alternative is to build the temp tables in the front end portion, but i don't really want to do that.....

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Thanks,


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