Relationships With Linked Tables

Jun 19, 2006

I have a database with a table on a shared network drive. The table contains a list of buildings, building details and a unique building code. I want to be able to use that database as a master copy so any new buildings that need to be added can be.
I have another database with accounts and another database with some other information. I can create a relationship between the accounts and the linked table of buildings (by the unique building code) but if I am to go into the building table, there is no "expansion option" to see all the accounts for that building. Is there a way to create a proper relationship or at least make a copy of the buildings table so that each time the database starts up it can get the latest version?

Thanks in advance,
Bob

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Linked Tables And Relationships

Mar 19, 2008

Each employee has their own database containing a table of log in and out times.

The main database links to that table in each of the employess databases, a UNION query compiles all these tables.

Is it possible to have a create relationships with linked tables?

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How To Specify Relationships When Two Tables Are Linked Multiple Times

Nov 16, 2006

Hey all, i would appreciate some help with Access here.

I am an attorney, and i am trying to set up an access database for all of my cases.

I have one table in which i keep the names, contact information, etc of all the witnesses who i have used or will be using (especially expert or law enforcement witnesses who i will be using in multiple cases).

I also have a main table in which i have a record for each case. Because I have multiple witnesses for most of my cases, I have had to create multiple relationships between my main cases table and my witnesses table.

My question is this: How do I specify when setting up a report (or a form/query/etc) that when i ask for the witness's address i am looking for the address i made with a particular witness, specify that relationship between the two tables, as opposed to the other relationships between the same two tables.

I hope that makes sense, and i would very much appreciate if someone could give me instructions.

Thank you.

Jay B

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Tables :: Relationships Between Linked Tables

May 3, 2013

I have one database called asset management. It consists of one main table called cyber assets. Most fields in this table are linked to a manually created lookup table inorder to restrict user input. There are also two additional, none lookup, tables used to list a) the IP addresses (there can be more than one) and b) another similar 1 to many type table. Basically this DB is used to manage basic cyber asset data, excluding most items related to configuration management.

So, this above DB serves the purposes of asset management. Now I essentially need a similar DB for Patch Management. What I've done for this is to assess each patch initially (i.e. just by looking at the patch title and determining if we even have any of those device. i.e. this assessment is not based on OS, model number... just a general 'may' or 'may not' be applicable). Here's what this SEPARATE DB looked like:

Since each patch is essentially assessed against itself, or maybe a better way to describe it is against the users memory of what we do and don't have, only a single table and form was needed.

So now we've been thru this process and the DB is filled, all initial assessments are complete. The next step is to take all the ones that are applicable to our company (based on the initial assessment when you answer, yes is applicable) and do assessments based on each device we have.So what I want to do is to link the two DBs on a new table called Patches_by_device, inside the original patching DB... so the relationships would look like this:

But as you can see, the linked table CYBER_ASSETS has some sort of undefined relationship type, which is causing my issues.So the next thing I did was to autocreate a form based on the Patches_by_device table, and here's the result.I need to change the patch_key to the Patch_ID+Patch description+URL, etc, and to change the device key to the the UNID+IP+functional description, etc...so I changed the form record source like this:

Now I should be able to change the control source of the Patch_key and Device_key to more useful information. so I changed: Patch_key control source to Patch_ID and Device_key control source to UNID (which is in the cyber assets table)

As you can see, it worked for the patch_ID but not the UNID which is part of the linked table.Must it be within one DB, because we have a ton of other modules to implement (e.g. config management, vulnerability assessments, audit stuff, and more...) and I'd like all these to be in individual DBs, all liked back to the main cyber_assets/Asset management DB.I've considered just modifying that patch table so that each device has its own column heading in the table, but this will cause issues when new devices are added.

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Tab Controls And Linked Subforms With One To Many Relationships

May 8, 2006

Hi there

I've got 3 tables related to one another with one to many relationships. They are:
21_Category
22_SubCategory
23_Indicator

where the 23_Indicator table has 22_SubCategory as its parent and 21_Category as its grandparent.

The forms wizard in Access has nicely developed a form with 2 subforms contained on it which does the trick for maintaining all 3 of these tables. The form itself displays 21_Category, subform1 displays 22_SubCategory and subform2 displays 23_Indicator. When I change the active record for either Category or Subcategory the subforms change their display as expected. All good.

My concern is that the form looks a mess and not very welcoming, too much info on one form, so I'd like to replace the 2 subforms (or even form plus 2 subforms) with one Tab Control. So far I can get the linking working correctly to the first page within the Tab Control but cannot link the second page child records to the active record in the first.

I'm using the Link Child Fields and Link Master Fields to do this. Even straight copying of the entries from my subforms which already work cannot get the Tab Control to behave in the same way.

Without wasting any more time on this, does anyone know whether it is easily possible or I'm missing something obvious? I suspect I've got something slightly wrong with either the Source, Link Child Fields, or Link Master Fields syntax, or referring to the wrong objects. Alternatively, Tab Controls just aren't designed to show one to many type records??

I'm not a VB Developer so if this isn't possible without writing a whole heap of code then I'll just have to cut my losses and use the crowded form I already have, though I'm happy to insert a few lines to get the Tab Control to work.

Thanks for your help in this. Apologies if this has already been posted loads before. I'm doing this as voluntary work for a charity and I'm a fairly new user of Access and VB (though I'm familiar with databases and SQL).

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Relinking Multiple Linked Tables That Are Linked To Different Databases

Feb 2, 2012

I have a database with a number of linked tables that are linked to tables in different databases (not a back-end).for example, I have table1 that is linked to table1 in K:databasedb1.mdb.table2 linked to table2 in S:datadata.mdb.and so on...

However, recently we have moved all our databases to a new location.

K:databasedb1.mdb is now residing in O:masterdatabase
and S:datadata.mdb is now residing in O:masterdata
and so on...

I'm now in charge of relinking all those tables to point to the new location.I would do this in linked table manager one by one but we have 100s of tables linked to multiple different databases in different location.is there a way to create a VBA code that will automatically do this re-linking process?

so,
1. find unlinkable tables
2. search its new location under O:master
3. re-link it to the new location

Database names and tables names have not been changed. Just the location of databases.

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Tables :: Setting Up Multiple Tables / Relationships

Dec 10, 2013

I have 5 tables and 2 forms. The primary form is what I input all the information into (Tracking) and the other form is to update employee information (update form).

The "Tracking" form is where I add information to 4 of the 5 tables. Here is where I'm stumbling. Would it be more practical to just have 1 table and just expand the fields, or have the form put the information into the separate tables. Those 4 tables are Employee, phone, spotter and radio.

I'm wanting to keep a running tally of who doesn't turn in what equipment on what day.

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Help With Tables Relationships

Nov 19, 2004

CompanyID pk (just one company)
CompName

EmployeeID pk
companyID fk
roomID fk
extensionID fk
LName
FName

LocationID pk
RoomNumber (many employees might share same room)

PhoneDirectoryID pk
ExtNumber (employees might share same extension number)
roomID fk

ItemID pk
ItmName (messengers take envelopes to different employees)
equipmentID fk
employeeID fk

EquipmentID PK
eqmtName (equipment might be used many times to deliver jobs)

I just need to know if the relationships for these tables are right.

If you need more information about this, please let me know.

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Relationships Between Several Tables!?!

Nov 30, 2004

I am converting / developing a database that stores information pertaining to individual birds and their recaptures over many years. Here is a condensed version of the many tables in this database:

tblIndividual Bird:
Autonumber (Primary Key)
Band Number - also, unique to the individual bird
Sex - M or F
etc ..

tblCaptureInformation:
Autonumber (Primary Key)
Band Number - look-up from tblIndividualBird (using hidden Primary Key)
Capture #- # which indicates what capture this is (ex. Intial capture - 1)
Place
Age
Date
etc ...

Each time a bird is captured, we record information pertaining to TIME, MEASUREMENTS, and NEST INFO. So, I have seperated the data based on these headings and made them into individual tables.

Now, my problem .... I have already created a relationship between CaptureInformation and Individual Bird. However, in the last 3 tables I would like to create a drop-down menu which shows the Band Number and Capture Number and make relationships there. What is the easiest way to do this? As of now, when I make a look-up field in the last 3 databases to show this info, the Band Number comes up with the Autonumber (because I am using the CaptureInfo table) which does not really help someone entering the data. Thanks for your help.

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Tables/Relationships

Nov 30, 2004

Hi,

I am trying to create a db for service orders for customers. At the moment I have four tables, customer, service_order, parts and totals.

I have one form for customer records that has a button that when clicked opens another form for that customer's service orders. The service order form has two subforms, one for parts and one for totals.

When I try to add a new service order for my test customer it says "you cannot add or change a record because a related record is required in the table 'customer'.

As you can see here (http://www.abstractmusic.org/relationships.gif) I have three relationships setup. cust_no in customer table is a PK and so is service_order_no in service_order table.

Also I am having problems with the totals, as the fields are from different tables the equations won't work from within the subform (I guess I need some kind of query). I need the totals in a seperate table other wise I have a total for every part entry.

Any help would MUCH appreciated.

Cheers

Housey

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Are My Tables And Relationships Set Up Right?

Mar 29, 2006

The attached application is what I need to design a form in Access around. Please see if i set up the tables correctly and the relationships. Thanks.

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What Relationships / Tables Should I Set Up

Sep 6, 2007

I am trying to set up a database to detail dances published in a magazine over the years.

I currently have all the information in an Excel Spreadsheet but know that Access would be better.

The columns in my spreadsheet are:

Dance
Choreographer(s)
Level
Count
Date Published
Song 1
Artist 1
Count In 1
Song 2
Artist 2
Count In 2
Song 3
Artist 3
Count In 3
Song 4
Artist 4
Count In 4
Song 5
Artist 5
Count In 5
Song 6
Artist 6
Count In 6
Song 7
Artist 7
Count In 7

There can be two or more dances with the same name
The same choreographer(s) could have written more than one dance
The same count can be used for many dances
About 15 dances are published on the same date
One artist can have more than one song used
One song can have more than one artist singing it
One song and relevant artist can be used for more than one dance

I tried using Access For Dummies but it has confused me even more. I cannot work out what tables there should be and what relationships.

Not all dances have 7 songs for it - some have 1, some 2, some 3, etc.

What is listed as song 4 for one dance could be song 1 for another or song 5, etc.

Any advice gratefully received!

Thanks in advance

Chris

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Tables And Relationships

Jan 31, 2008

I'm a novice and I'm confused. Maybe it's the way I think. I feel like there is an easier way that I'm overlooking, but I can't seem to get a satisfactory solution.How would YOU create your tables/relationships if you had the following:* The general purpose is to manage orders* You have to store information about the order (like order number, date)* You have to store information about from what company the order is from (like address)* You have to store information about from which department of that company the order comes from, each department has their own information that needs to be stored (like contact person).Keep in mind that you don't want to memorize which department is from which company nor do you want to be able to make the mistake of entering an order from a department that is not a part of that company.It seems like it should be an easy thing to do, but I'm stumped. I've thought about creating a new table for every company with a sub table for every department but that doesn't seem very practical. I tried creating one table called Company and one called Department, then merging them on a third table which is then linked to a fourth table called Orders. I'm not convinced this is the best way to do it, but it's my best guess at this moment.All help is greatly appreciated.

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Relationships Between Tables

Feb 10, 2008

I'm relatively new to Access so am unsure if i'm on the right lines with my system, but here goes:

The system should be able to have new records of students input, and their grades recorded.

At present I have it laid out as follows:

-tbl Pupil
--Pupil ID (pk)
--Surname
--Forename
--Year
--Address
--Phone Number
--Parent's e-mail

-tbl Present Grades
--Pupil ID
--Grade ID (pk)
--Subject
--Term
--Grade

-tbl Subjects
--Subject ID
--Name



Any advice on relationships between the tables would be appreciated. Thanks in advance.

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Tables With No Relationships

Oct 31, 2006

i know tecnically you can create a table with no relationships but is it "ok" to do so?

im using a table to store some values which are only referenced through a query but it is completly detatched and has no relationships with any other tables, im awear my database will function perfectlly happily but is it an acceptable programming standard?

cheers guys

mike

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Tables :: Multiple One-to-many Relationships Within Two Tables?

May 18, 2013

I am creating a database of medieval labor contracts and have come across an issue.

I have a table of Contracts, and a second table of People. I want the table of People to show every contract in which that person appears. Each contract has multiple roles - there is always at least a Laborer and an Employer.

The same person might appear as a laborer in one contract, and an employer in a second contract and I want my People table to pull every contract in which that person appears, regardless of the role they play in the contract.

So far I have not been able to get this to work. I set up two different one-to-many relationships which link the People table primary key (personID) to two separate columns in the contract table. However, in the People table, instead of pulling contracts in which the person appears as either Laborer or Employer, it will only pull contracts in which the person appears as both Laborer AND employer (a situation which will never occur in my actual data but which I tried out as a test).

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Tables :: Two Tables / Multiple Relationships Possible?

Oct 4, 2013

I have three fields in one table that need to be related to the PK of another table.

tblProject - Engineer_ID, Producer_ID, and Project_Maner_ID
tblEmployee - Employee_ID (PK)

employees can take on any of the positions for a given project, so i'll need to have multiple employees filling up different roles for each project.

when i try to set up the relationships i get the following message:

A relationship already exists.

Do you want to edit the existing relationship? To create a new relationship, click No.

I click No, and it creates a table named tblEmployee_1. Why? is this ok?

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Tables :: Number Of Tables And Relationships

Jun 27, 2014

I want to build a Financial Database. We are provided a certain amount of budget under different heads each year. Every month we spend some money from some or all heads. Then we provide a detail of expenditure during the month under each head and the balance thereof. My request is how many tables I need in my database. My opinion is 5 tables each for Years, Months, Heads of Expenditure,Budget Allotted, and Expenditure.

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Tables :: Deleted Error In Microsoft Access Linked Tables

Jul 24, 2014

I have developed a Microsoft Access 2010 database for my client and the database is split with Front-end/Back-end, the Back-end and the database is shared on Network, The client operating system and applications for all users are hosted and consistent and the service is delivered over Citrix.

The database some times corrupt the tables record and give a permanent #Delete Error, I have attached one of the database table and the screenshot of the error,

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Tables :: Data In Linked Back End Tables Not Saved From Front End

Jun 19, 2015

I have split database (B/E is in the SharePoint library, F/E has users on a local PCs). Sometimes, when I update/add data (does not matter if it is via form or directly in the table) it looks OK, but when I re-open the database, the data are gone.

Problem is that I cannot catch the moment when data were not saved (sometimes data are saved, sometimes not). I can point out this: if I re-enter the missing data, primary key continues subsequently, it looks like the data have never been entered. I tried to use script

Code:
If Me.Dirty Then Me.Dirty = False

on "On Close" form event, does not work.

B/E is linked by VBA code and it looks OK (no error, Link Manager shows correct path). I suspect interrupted connetion to the SharePoint but I don't know how to check it. I implemented VBA script co keep open connection to the SP but the issue persists.

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Tables :: Automatic Refresh Of Linked Tables - ODBC Connection

Jul 22, 2015

I have linked tables from SQL Server using ODBC connection that their location never changes. I have used certain fields of those tables to create queries and make table queries to derive to the information I needed.

On these tables on SQL Server, there is new data added daily. Every day, midnight, there's new data records added of whatever transactions took place in that working day. how often do I need to refresh linked tables in this case to get the latest data added. I mean, once I am linked, the make table query using those defined fields, would it get the latest data added by default when the query is executed, or I must refresh linked tables using Linked Table Manager and then run make table query.

Also, if I want the access to automatically refresh linked tables, can I use the following code? I have added this code, and executing it through a button, but I don't see anything happen, the database becomes inactive for couple seconds (I guess while it is updating) but I don't know is it updating the tables for sure or not, though I am not receiving any error when executing the code through the button.

Function RefreshLinkedTables()
Dim tdf As TableDef
For Each tdf In CurrentDb.TableDefs
If Len(tdf.Connect) > 0 Then
tdf.RefreshLink
End If
Next td
End Function

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Import Tables That Have Relationships

Oct 14, 2004

Hello,

I know this has been asked a few times before, and I did search it, but could not find an adequate answer.

I want to use code (VBA) to import tables from a different Access database into the current one, by first deleting the current database tables, and then importing the new tables from the other database. I found code in the following thread that does exactly this:

http://www.access-programmers.co.uk/forums/showthread.php?t=74700&highlight=import+tables

However, the code in this example only appears to delete tables in the current database that have no relationships with each other before importing the outside tables. My tables, however, are rife with relationships and when i run this code, i get the message, "You cannot delete the table "tblWhatever", it is participating in one or more relationships." Can someone give me a pointer or two about how I can solve this problem (if at all) ?

Thanks in advance!

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A Bit Confused With Tables And Relationships

Aug 11, 2006

Hello, ive done a bit of access before but ive got myself a bit confused on my next step.

I have a database of books that i loan out. I have a table containing the books instock. I want to be able to loan out book s and reserve books. The problem is whats the best way to do this? Should i have a form that allows me to click a button that takes the book out of the books instock list and adds it to the reserved list? The problem i see with this is when all the books had either been loaned or reserved then the books instock list would be empty and nobody could reserve anymore books which would be a vital floor. Does anyone have any ideas?

Thanks,
Marley.

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Questions About Tables/relationships

Oct 6, 2006

My boss has assigned me the task of constructing what is basically a time tracking database. Employee info will include Employee ID, Name, Work Area, and Supervisor's name. Each day, employees will record the time they spend working on any of 40 different potential tasks for that day. The forty different tasks are split into five main categories, each with eight tasks. The boss wants each employee to be able to go into a form and/or subforms (haven't gotten that far yet!) and be able to record the amount of time they spent working on any given task for that particular day.

So, the tables would need to contain the Employee info mentioned above, the date, the 40 different potential tasks, and the time spent on each task for each day. I can't quite get my arms around how i should set up the tables, particularly where the date would go. Hope i was clear enough describing what I'm looking for. If not, let me know.

Thanks in advance for any suggestions!

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Building Relationships In Tables

Jun 19, 2007

Hey Guys

Great Forum and another newbie here

I have created an invoicing system for my business, as i was unhappy with MYOB.
Basically i have Product ID and Desciption in 1 table.
In another, called registry, this is where i input the data for the order.

What i basically want to do is?
When i type in the Product ID in the registry table, i want the description field to automatically appear in the cell next to it. As this would save a lot of time

Any help would be much appreciated

Thanks

Tarek

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Nov 13, 2007

Hello,

I'm creating a database for a home builder to track a lot of info, but mainly: house info, prospect info, actual customer info, and contract info.

My main tables are:
tblCustomers
CustID PK
(a bunch of customer fields)

tblHouses
HouseID PK
(a bunch of house fields)

tblContracts
ContractID PK
CustID FK
HouseID FK
(a bunch of contract fields)

The releationships are as follows:
One house can have many contracts
One customer can have many contracts

I thought I could use one table, tblCustomers, to track the prospect info and actual customer info, as so much of it will be identical (technically someone should be entered as a prospect before they can be a customer, and all info will be the same for both except for extra information fields for prospects, but I always want to be able to refer back to those fields) and I would know a prospect became an actual customer because at least one contract in the tblContracts would have their CustID associated with it.

Is it acceptable to have two foreign keys in tblContracts? And am I missing something that should exist between House and Customer? House and Customer are only releated when there is a Contract, so it is implied (I think) that a Customer can be associated with many different houses through many different contracts. Is that the right way to look at it?

I've come up against a wall regarding linking two forms so that the second form displays the data associated with what was showing on the first form. If I'm good here with the tables I suppose I'll post my detailed question in the forms area.

Thank you so much!:o
~Merissa

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