Updating Split Data Tables
Oct 12, 2004
This has to be a common problem.
I have an environment where I have two databases. One holding tables (The Data) and one holding everything else "The Programs" (Forms, Queries etc)
When the application gets enhanced I currently have no problem updating "The Programs" since I can just copy the new MDB on top of the old MDB.
This is not the case with "The Data", if I need to change any of the tables (since they contain live data, that is modified all the time) I have to physically connect to the machine holding the Data.MDB and modify the tables. The problem is there are getting to be many locations where these changes need to be made.
Is there any way to update the tables from a script (I used to use SQL to update remote tables in a mainframe world)
Thanks
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Jun 2, 2014
I have a split database. I have just created anew table in the back end and created a relationship to an existing table. All done in the backend.
I have opened up my front end and imported the back end end. But when I check the relationships in front end neither the table or link is there.
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Oct 12, 2005
I have created an Access 2000 Db, and have gone through the motions of splitting the Db via the Splitting Tool. Since I have done this split, I have added forms, queries, and reports to the Front End. I have left the Back end table structures alone.
This is where my problem comes into play. To enter data into the Db, I use the forms. After splitting the Db, I assumed that the data would be stored in the tables in the BE. An issue had just presented itself and I went into the BE table structure to add a field to a couple of the tables, and when I opened the BE table in the datasheet view, I noticed that there were no records. I then became curious because when I run my reports and queries, the information is present. So I opened the FE tables and what do you know, all the data I have input since the split is housed in the FE tables.
I already attempted to Update the Table Links, but that did not solve the problem, and the data is still in the FE.
Can someone, anyone please help or offer some suggestions on how to resolve this dilemna.
Thank you in advance,
DtF
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Apr 18, 2007
I have created a Production Tracking database for my company using
Access 2003. Everyone here uses Access 2000, so I have saved the file
as an access 2000 database. I am importing three tables from an ODBC
connection. These tables are being update by another department
constantly. I am using a centralized form for users to view the
information.
If the users are viewing the information and we try to update the
tables they are viewing, we get an error. My question is: Is there a
way around this problem?
This what I have done:
In the module I wrote, I am importing the tables, then renaming them
to the tables the users are viewing, and then altering the structure
of one of the tables. We cannot use linked tables, the reason is we
have only three licenses to access the software through the ODBC
connection. So as soon as three people open the access database they
take those three connections.
Any Ideas?
Thanks,
Phil
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Oct 8, 2004
Ok. Here's the situation. I have query setup. This query has 2 columns:
1. Agent Name
2. Sale Value
I have 2 tables.
Table1: Includes Sales for this pay period only
Table2: Includes all Sales From past to present.
We are setting up our system on Tiers and Each sale value is going to change. So, Here's what I need:
I need to run an update query that first Looks up all the records in Table1 based on Agent Name. The field that needs to be updated is called SaleValue. It needs to be updated with what's in my Query mentioned above.
Then, all the values in Table1, need to be copied (or updated) into Table2. This can be done based on the Primary Key (SaleID), which exists in both tables. So I guess we will need to run 2 separate update queries. Any ideas on how this can be done?
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Dec 24, 2012
I have an Access db in a 3 person multi-user environment on a Windows network.
There is a "PRODUCTION" db and a "DEVELOPMENT" db.
Let's call them PROD and DEV.
PROD has the most current data, shipping records, item master, customer data, sales, etc. - but not the most current structure.
DEV has the most current struture - all the front end stuff - forms, functions, modules, etc. - but not the most current data.
The way I've handled this in the past (it seemed to work) was to take the PROD db and rename it to PRODX. Then take the DEV db and rename it PROD. Then open DEV (now called PROD) using the usual shortcut to PROD.
So now that opens fine, and I have to update all the tables from PRODX - and I mean ALL of them - since I don't really know what data has changed since the last update.If I try to delete records I get blocked by access because of all the related records (I don't have cascade delete set on every relationship). So I delete the whole table - ALL of them (this requires me to also delete the relationships). Then I IMPORT all the tables from PRODX (these have the current data). But now the relationships are all gone. It seemed at first that the relationships were back and intact - but when I last looked they were gone. So this is my problem.
HOW do I COMPLETELY empty ALL of the tables - or even delete them - and then restore them or repopulate them from an exact copy of the db but with current table data - and WITHOUT affecting the relationships?
Obviously any back end structural changes have to be handled differently. Usually by manually making the same change on the PROD db that I had in the DEV db - because deleting the table will cause the structural changes to be lost.
One last thing - I've been working this way on an un-split db, and now I'm in the process of splitting it - which SHOULD make updates much easier.
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Jul 9, 2014
I have a database containing 10,000+ trouble tickets identified by a unique field called "Ticket ID". This is the primary key for my table. (It's on just one table.) These tickets came from an excel sheet that was exported out of a different database. (For various reasons, we've moved the tickets to access.)
Among many descriptor fields, I have a field called "SPR Type" that shows what type of ticket each entry is. (Bug, Defect, Enhancement, etc, etc) The problem we have here is... not all of the ticket entries have an SPR Type listed on my access table because not all of the tickets coming out of the original excel sheet had one.
I was given a new excel sheet containing 400 to 500 ish Ticket IDs and the SPR Type that applies to each of those tickets. How can I take that sheet and use it to update my access table? Ie. Use the excel sheet containing Ticket ID and SPR Type to populate the blank SPR Type fields for each of their respective Ticket IDs?
**Update: I'm trying something like this...
UPDATE [SPR Priority] inner join [EB Update of SPR] on [SPR Priority.Ticket ID] = [EB Update of SPR.Ticket ID]
SET [SPR Priority.SPR Type] = [EB Update of SPR.SPR Type]
But I am getting an error that says "Invalid Bracketing of name [SPR Priority.Ticket ID] and similar errors. What am I getting wrong here?
I thought about an Update query that would populate the SPR Type fields based on Ticket IDs. I could import the new excel sheet into a separate access table and update from there.
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Mar 11, 2013
I am working with MS Access. The database has 2 tables.
-Parent and Student and ParentID is the Primary key as a parent may have multiple Students
-There is a form that lets me add students for a particular parent
One of the fields in the Parent Table is FeeDue. I added a field in the Parent Table called NumOfStudents..What I want to do is as follows: When a student is added on the Student Form, I want fee to be calculated automatically for display AND update the FeeDue field in Parent table. Event handler executed when a student is added (checkbox clicked)
OnClick()
{
Read NumOfStudents from Parent Table
if(student_added = true)
NumOfStudents++
else /* This is to cover student withdrawl*/
NumOfStudents--
if(NUmOfStudents = 1)
Fee= 400
else
Fee = 500
}
student_added check box is on the student form NumOfStudents and FeeDue are fields in Parent
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Dec 1, 2013
I have a table in my DB called, devices. This contains all the information about various devices we have deployed in the field.
These devices are also contained in 2 other separate MySQL DB's.
What I need to do is add 2 additional field to my access table for the DeviceRecno and DeviceID of the same device from the MySQL DB's.
Adding the field is easy, but I cant think of a way to enter the recno and ID from the other DB's without typing them in manually for each one.
The common between them all is the serial number of the device, and I can get a list of serial numbers, recno's and ID in an excel sheet.
like a vlookup in excel to easily populate all the existing records with the recno and id's from the other db's?
When I created the access system there was no intention to link it to the other DB's for any reason, but that has now changed due to a lot of reasons.
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Sep 22, 2013
I have split the data base
Added a new table to the back end .But do not know how to update it to the front end
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Nov 28, 2012
I have access that is required to be accessed by multiple users and register their activities which is reflected with the tables in the background and form sends also the time that they are putting their activities.
So i split the tables and put them in a share folder in one of the PCs. however, the problem is about the timing and dates is not correct usually, and i found out some of the PCs their dates are not on sync. I asked and found out sometimes it is required to change the timing in their PCs.
Therefore, i was wondering instead of fetching the timing from their PCs why not to put the timing of share PC (i.e. timing/Date of the share PC which has the splitted tables)
so can i do like this:
User PC: (Form1) & user activity => Share PC: (Split table) & take time of the share
How can i do that?!
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Aug 28, 2006
Hey,
The database I am working on, I split a while ago to give it some security. Now i'm updating a related form, and i'm finding that if I delete and add fields in the BE, the FE fields (being the fields that I need to insert into the form so the data entered propogates to the DB) are not updated.
How do I update the FE?
Thanks.
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Oct 23, 2013
I am working on a database which has two tables used as part of a registration and login process.
I would like a couple of fields from table one to automatically update in table two, once the fields in table one are populated without using an 'on click' event.
The reason I would prefer not to use an onclick is because the completion of the form used to generate the users table does not require any buttons for the data to save.
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Aug 31, 2007
How do I know when I should split a db into multiple tables? Right now- everything is in one table. Is there a rule of thumb or method to determine when I should split it up?
For example- MY DB is running queries on properties for sale. Would I split all the Active, Sold, Expired, Off Market listings into separate tables, since I will be frequently queriing based off of the status of the property? ie- I'll be running avg prices of homes that are in each of these status. If that's the case, how do I know what relationship to give it/how to set it up (use the MLS # as the primary key in each, or do I need a foreign key or something else?)
Is there a general rule of thumb, or guide to use when designing a db?
THANKS!
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Oct 11, 2005
Im trying to add 2 new tables to a split and linked database... but no matter which side i add the table to (BE or FE), it wont show up in the linked table manager.. so my question is 1.) is there some trick to getting it to show up in the link manager? or 2.) is there some way to re-merge the database, add the new tables.. and then split it again?
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Apr 8, 2015
I'm working on recreating my church's records in access and was originally wanting to take people from the Visitors table and automatically move the to the Members Table (and same with Deceased & Moved), but after some searching found that's not really do able. So now my question is, can I have a master table that has everybody (visitors/members/deceased/moved) and then split that into different tables while keeping the main table (that way I can go into the main table and reassign the person)?
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Jan 15, 2014
I have a CSV file that the system is producing; it is one file with multiple sections in it eg...
Quote:
[Names]
001,"John Doe"
002,"Jane Doe"
003,"An Other"
[Address]
001,"63 Huntly Street","CRANMORE","BA4 7HA"
002,"52 Southern Way","NORTH QUEENSFERRY","KY11 3YZ"
003,"20 Scrimshire Lane","ASKETT","HP27 2AS"
[Orders]
001,"0001A","Screwdiver",1,8.99
001,"0001A","hammer",1,15
001,"0001A","no 3 screws",1,5
001,"0001A","drill",1,49.99
etc etc etc
The file is huge with many sections (eg Names, Address) in it. What I need to do is load it into Access for some analysis.Is there a way I can split the file one loading to the system into multiple tables?
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Aug 18, 2014
So i split my database into a front and back end, now i wanted to add a table to the database. I created the table in the backend but im not sure how to make it appear in the front end. Im using access 2010. I tried the link table manager but the table i created dosent appear there.
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May 6, 2014
I have split the database I have created via the splitter-wizard and found that all tables with auto-numbers have re-set back to 1.
How do I get around this problem - I have tried running an append query but it flags up an error message. For certain functions to work in the database I need to set autonumbers at different amounts .
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Nov 21, 2013
I have an Access 2007 file that is 'split' so the tables are centrally stored on the server.
How do I update one the linked tables stored in the back-end file with a table from another Access file?
If I import the 'new' table it is not 'linked' - it is embedded with the Access file I am working on.
What is the correct way of doing this without corrupting the data?
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Jul 3, 2014
I have a column that's called "Date" which stores values for begining to end date as 'Text' like: 070314-073114 So I need to split it to 2 columns that has the Start Date as 070314 and End Date as 073114?
This database is still in Microsoft Access, and eventually after cleaning it up, we will move it to SQL Server.
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Apr 20, 2013
I have done this in Excel before, but not Access. I do not know VBA. I figure this will have to be done in a query or a macro. I don't even know if all of this is possible in Access. I need to be able to split an Address field into:
Street Number
Street Name
Street Type
Street Direction
And the purpose of this is so that I can pull out the Street Type (Drive, Road, Lane, etc) and update the abbreviations (DR, RD, LN) to the Street Type spelled completely out.
I did this in Excel by creating a Named Range "Types" on a sheet that has the abbreviations in Column A and the spelled out versions in Column B so that I could convert the abbreviations to complete street types. I broke down the entire address into each part on another sheet. Then I did a VLOOKUP to look up the Street Type in Column B in the Types range. Works great! And the only way I knew at the time to do that.
But, by doing this, I have to get the data I need from a download into a spreadsheet, break the address fields down on a second sheet, do all kinds of field update conversions (to get the field names from the download to match the field names in my Access table). This takes extensive Excel programming. I just thought there might be a way to do it by simply importing the data from the download straight into Access. That is easily done, but the Street Types aren't consistent.
There may even be a better way to do this than splitting....something like if a field CONTAINS DR update it to Drive. This would be a long process to set up because there are so many different street types to consider.
This is basically for the purpose of finding duplicates. If there is one entry called 123 Main St and another called 123 Main Street, they are not going to show up as duplicates, rather as two separate records.
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Feb 25, 2008
Hi, all.
I have a "client/server" split Access 2003 database with an Interface file containing all the code/forms/queries and some system tables and also a Data Backend file, with all the data tables and table structure.
This is being deployed to multiple sites, each getting their own version of the backend, so sites will not be using the same backend between them all, rather multiple users in each site will all share that site's backend file.
Since users will deploy in different network locations, etc. they will have to re-link all tables. Is there a meaningful/user-friendly way of doing that without relying on user's knowledge of "Linked Table manager", etc.?
Thanks!
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Jan 10, 2005
I split my database. Then got the bright idea to rename them. Now when I launch the front end (which contains the forms, etc.), I get a message saying that it can't find my backed. I've tried renaming the back end back to its original name, but its still not working.
What is the best way to fix this situation? I was thinking about opening the front end, and re-importing the tables from the back end, or, breaking the links between the front end and back end. If I re-import, should I move stuff from the front end to the back end or vice versa?
Thank you in advance for your help.
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Sep 17, 2014
My db is split into front-end and back-end. In the f-e's Relationships schematic, I can see the relationships as they were defined at the time when the db was split, complete with the one-to-many symbology.
I can add a new table to the b-e and set its relationship as one-to-many, enforcing referential integrity and cascading as I wish - and the schematic (in the b-e) reflects that.
In the f-e, I can then use the <Get External Data - Access Database> function to link to the new table, and I can add the new table to the relationships diagram in the f-e. I can also drag and drop to link primary and foreign keys (within the f-e), but cannot select one-to-many. I'm OK with that, as I understand that the relationship is within the b-e, and this is just a diagrammatic representation.
But I can see the one-to-many relationships between the tables which existed when the db was split, and I would like to be able to see the new table's relationships in a consistent fashion. Updating the linked tables via the Linked Table Manager does not do the trick.
Surely I don't have to split the database again in order to achieve a consistent diagram - do I ?
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Jan 5, 2013
My question is this: I have a table where I'm entering employees' hours worked. Basically, it's something like this:
ID WorkerNumberDateworkedTimeStartTimeEnded
121/2/201310:00:00 AM3:00:00 PM
221/3/20132:00:00 AM11:00:00 AM
321/4/201312:15:00 AM11:30:00 AM
421/5/201310:25:00 PM11:00:00 AM
531/2/201311:00:00 AM3:30:00 PM
631/3/201312:00:00 PM10:00:00 PM
731/10/20137:00:00 AM4:00:00 PM
I have a query that (easily) determines how many hours an employee has worked on any given day. What I can't figure out at all, is how to write a query that can figure out how much time an employee had off in between shifts.
Thus far I'm able to run a query that separates this main table into individual workers by their id numbers, but can't figure out how to determine time off between shifts - as the last hour worked one day, and the first hour worked the next day are on two different lines (they are two different table entries).
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