Tables :: Developing Related Multi Level Child Parent Tables?
Jan 14, 2013
I have created a table that acts as a header for my data and a second table that acts as line item data. What I need to do now is add a second child table that uses the line item data as its parent table and stores associated line items for each record. Is this possible?
This is a skeleton view of what I'm going for:
Master Table:
tlbAuditReportHeader
- AuditDate
- AuditArea
- Auditor
Sub Table:
tblDiscrepancy
- Discrepancy
- CorrectiveAction
- ActualCompletionDate
- VerifiedDate
- Notes
Sub table to Sub Table
tblFollowUp
- FollowUpDate
- AssignedTo
- SpokeWith
- EstimatedCompletionDate
- Notes
Sometimes tasks change hands or are pushed back depending on work load. It would be nice to be able to track something like this.
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Jul 27, 2015
I have one parent table with 6 child tables (all child tables are linked to the parent table in the relationship through the BoardID autonumber field, and they are all one-to-one relationships). All of the tables feed into one form. I have added the "add new record" button to the form, but when I click on it, it only adds a record to the parent table. The only way I have found to solve this is to go into each individual table and add a new record. Is it possible to have a new record added to every table when I click the "add new record" button on the form?
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Dec 18, 2006
I am creating a purchase request form for my company. The main form contains the PO Request # (autonumber) and general vendor and shipping information. The subform contains the item numbers on the order, the quantity and costs. What I am trying to do is make it so that users can click a "duplicate" button on the main form of an existing PO Request and have all the data replicated into a new PO Request. A lot of what we order is repetitious and it would time saving if users could just duplicate an order and modify as necessary. Can anyone help me with this one...
Thanks!:confused:
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Jul 6, 2006
Sorry this is so long but I am trying to make it as detailed as possible...
The Setup
My database is similar to the sample "Service Call" db. I have a main table called "tblTT" which has an autonumber primary key. The table also contains several foreign keys such as UserID (not an autonumber) from "tblUser", TechID (also not an autonumber) from "tblTech", etc. I have the relationships setup with "Enforced Referential Integrity" for both updating and deleting records. Each relationship has a RIGHT OUTER JOIN ("Join 3" in access) so that all records from child (tblTT) and only equal from parent (tblUser, tblTech, etc.) will be included. I have a form for nearly every table which serves different purposes but the main function of the DB is to create new Trouble Tickets (TT's), a.k.a. service calls. Therefore the main form used is my "frmTT" form in add mode. The form contains all the fields from my "tblTT" table and contains (directly) no fields from any other table (I guess indirectly it contains fields from all the parent tables...).
The Problem
When I pull up "frmTT" and try to create a new Trouble Ticket for a user that does not yet exist in the table "tblUser" I get the error "You cannot add or change a record bcause a related record is required in table 'tblUser'".
What I want is for my users (the "Techs") to be able to create a new Trouble Ticket without having to worry about populating the "tblUser" table (and other parent tables) first.
My Solution
I was going to (and unless someone can find an answer for me still will) fix this using VB script by setting up a query to check all the parent tables for the values in their corresponding fields in the form. If the query returns no results an "INSERT INTO" statement will run to populate the parents tables so that the form will save itself into the Trouble Ticket table ("tblTT").
I feel that this is a huge work around and not the proper fix. I would prefer to do this the right way both to have a correctly setup DB and for future reference. Can anyone help me with this?
Thanks,
Andy
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Sep 18, 2012
I have two tables, Articles and Versions, related 1 to many. In my Versions table I want to set up a field that will start at 0 for the first version record related to an article record, and as version records are added in relation to that same article record I want it to increment by 1, no gaps. It ideally would be editable. It will not likely count above 5.
The result would be
Code:
article1 version0
article1 version1
article1 version2
article2 version0
article2 version1
article2 version2
article2 version3
What's the best way to accomplish this?
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Oct 26, 2012
I am working on a complex database, as i have to call sub tables in the parent table. but i don't know how i can create it. My database format is as below
Village name, UC Name, District, village basic information, village disasters history, village school safety plan, village DMC members, Hazard Map of the village,
After the field of District i have to call sub tables against each field with its details. How I can create it. in Hazard Map field i have to attach the map img files.
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Oct 12, 2006
Hi all
I seem to be having a problem with acess 2003 in that when ever I set the parent/child relationships and go back to the front end the simple disappear?
any thoughts would be grate
Thanks
James
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Apr 3, 2007
I have a form displaying the 11 fields of the parent/primary table using a selection from a combo box. I am using queries and vba code modules respective to form, combo box and command buttons. I have initial code that uses the two fields from the combo box selection to append same to a new parent/primary archive table. I now want to add to the append SQL the remaining fields to the parent/primary archive table. When I add the second sql string for the remaining fields to the same procedure and execute I keep getting 'null in primary key'. If I copy the primary record and paste same into the archive table it works.
Private Sub Command26_Click()
On Error GoTo Err_Archive_Primary_Click
Dim strSQL As String
Dim strSQL2 As String
strSQL = "INSERT INTO ARC_289325045 ([Survey Point ID], [Survey Area Detail], [Date On Site]) " & _
"VALUES ('" & Me.cboAreaDetailDate.Column(0) & "','" & Me.cboAreaDetailDate.Column(1) & "'," & _
"#" & Me.cboAreaDetailDate.Column(2) & "#)"
CurrentDb.Execute strSQL, dbFailOnError
'strSQL2 = "INSERT INTO ARC_289325045 (RecordID, UnitID, UserName, [TimeStamp], [Survey Point - Area], Measurement, NewArea, [EXIT Form] ) " & _
'"SELECT FORM_ID_289325045.RecordID, FORM_ID_289325045.UnitID, FORM_ID_289325045.UserName, FORM_ID_289325045.TimeStamp, FORM_ID_289325045.[Survey Point - Area], FORM_ID_289325045.Measurement, FORM_ID_289325045.NewArea, FORM_ID_289325045.[EXIT Form] " & _
'"FROM FORM_ID_289325045"
'CurrentDb.Execute strSQL2, dbFailOnError
Exit_Archive_Primary_Click:
Exit Sub
Err_Archive_Primary_Click:
MsgBox Err.Description
Resume Exit_Archive_Primary_Click
End Sub
The next step is to do the same for the child table and append related records to the child archive table.
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Apr 3, 2007
I have a form displaying the 11 fields of the parent/primary table using a selection from a combo box. I am using queries and vba code modules respective to form, combo box and command buttons. I have initial code that uses the two fields from the combo box selection to append same to a new parent/primary archive table. I now want to add to the append SQL the remaining fields to the parent/primary archive table. When I add the second sql string for the remaining fields to the same procedure and execute I keep getting 'null in primary key'. If I copy the primary record and paste same into the archive table it works.
Private Sub Command26_Click()
On Error GoTo Err_Archive_Primary_Click
Dim strSQL As String
Dim strSQL2 As String
strSQL = "INSERT INTO ARC_289325045 ([Survey Point ID], [Survey Area Detail], [Date On Site]) " & _
"VALUES ('" & Me.cboAreaDetailDate.Column(0) & "','" & Me.cboAreaDetailDate.Column(1) & "'," & _
"#" & Me.cboAreaDetailDate.Column(2) & "#)"
CurrentDb.Execute strSQL, dbFailOnError
'strSQL2 = "INSERT INTO ARC_289325045 (RecordID, UnitID, UserName, [TimeStamp], [Survey Point - Area], Measurement, NewArea, [EXIT Form] ) " & _
'"SELECT FORM_ID_289325045.RecordID, FORM_ID_289325045.UnitID, FORM_ID_289325045.UserName, FORM_ID_289325045.TimeStamp, FORM_ID_289325045.[Survey Point - Area], FORM_ID_289325045.Measurement, FORM_ID_289325045.NewArea, FORM_ID_289325045.[EXIT Form] " & _
'"FROM FORM_ID_289325045"
'CurrentDb.Execute strSQL2, dbFailOnError
Exit_Archive_Primary_Click:
Exit Sub
Err_Archive_Primary_Click:
MsgBox Err.Description
Resume Exit_Archive_Primary_Click
End Sub
The next step is to do the same for the child table and append related records to the child archive table.
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Nov 4, 2007
I have a simple Family table:
PersonID
Name
ParentID
where, in the case of a child, its ParentID contains the PersonID of its parent.
In the Relataionships window I put two such tables, Family and Family_1 and I joined Family.ParentID to Family_1.PersonID. I set referential integrity, cascading updates and cascade deletes.
I made a Parents form (by setting the ParentID criteria to Is Null), and added a Children subform (linking the ParentID of the subform to the PersonID of the main form).
The cascading updates works when I add a new child but when I try to delete a parent I get the error: Could not update; currently locked.
Why doesn't the cascade delete work?
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Dec 24, 2005
I have a main form with 2 subforms. Subform 1 shows the results of query 1, subform 2 shows the results of query 2.
Query 2 uses query 1 as a starting point. Query 1 is updated with an option group on the main form. In other words, when I select an option on the main form, qdef for query 1 is updated and query 2 will also be affected.
If I select an option the subforms don’t update. If I close and reopen the main form, the subforms show the correct information so the queries are being updated but the subforms are not showing the updated information.
I’ve been trying to requery the subforms using the following code in the OptionGroup_Click() event:
Forms![MainForm].[Subform1].Requery
Forms![MainForm].[Subform1].Requery
By the way, I don’t have any parent/child relationships.
Am I missing something simple.
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Jan 26, 2006
Hi,
I've got a parent/sub-form set up, both of which derive their data from linked tables connecting to a central database. As a result I've had to add coding to the NewRecord events to fetch the next primary keys from the database.
Unfortunately I'm finding that one loading the new record, the child form seems to be loading before the parent, ie the child form_Current event occurs before the parent form_Current event. Is this how it should be? It seems intuitive that the parent should load first.
I'm sure I can develop some cunning logic to get around this problem but I'm sure there must be a better way. Has anyone any experience of this parent/child set-up with linked, central database tables?
thanks!
Dave
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Sep 23, 2005
I have a field in the parent table which indicates how many child tables there should be at the most. I'm uncertain about how to enforce this. I"m using access as the database to a Vb.net app. Should I do it in access or Vb.net or both.
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Oct 16, 2007
Hi
I have a parent-child base table (accounts) with the following fields:
- id
- parentid
- name
every record's parentid is either 0 ( which means it is in the most upper level) or another record's id (which means it is the other record's child)
different levels of records are being used. I mean some accounts are used in the most 1st level with no childs, some in the second level, ....
I need a query to list the accounts which are not parent to any othe records, regardless of what level they are defined.
Thanks again for the help.
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Nov 13, 2013
I have a variable tempnum on a subform which I want to pass into a textbox on the main parent form. I cant seem to get it right. Here's my code
Me.Parent.Parent![List num].Value = tempnum
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Aug 28, 2013
When trying to link parent to child in master and subform, I am getting a pop-up:
Subform Field Linker
"Object variable or With block variable not set"
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Jul 16, 2014
I'm trying to split a table up because I now realize it won't be able to do what I need in the future. It wasn't designed properly at the outset, and I'm trying to correct it now.
This is a database of pregnancies and deliveries.
The single table does not cater well for multiple pregnancies (twins, triplets, etc), and also I foresee problems when mothers come back in future for another delivery.
Therefore I am trying to separate data into 3 tables: Mother, Delivery and Baby.
This is because each mother can deliver more than once, and each delivery can have more than one baby.
I have set up a trial database, with just a few fields in each table to see if this works. An screenshot of the table relationships is attached.
The primary key of the Mother table is linked to the Delivery table, and ditto the primary key of the Delivery table and the Baby table.
I'm not sure how to migrate the data over, in terms of the primary keys of each table, because in the new tables, these should be an AutoNumber field, so that they are unique numbers.
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Oct 22, 2014
I have to make a Costing System but for that I need to enter our Expense details in database according to Fiscal year and months.
I need a table for Fixed expenses and one for Variable Expenses and then I need one or more Forms to update data in those tables. Now I've created a table with Fixed Expenses. I have to update Year and Amount in that. Now it is only letting me one entry per Expense.
I want multiple entries for one Expense say 'Advertising' for different years. I'm thinking may be I need to make more than one Table, may be one for Expenses with ExpenseID and other for Years with Year and YearID and the third one for Amount with columns Amount, Method of Payment, Date and Notes. I did tried this but I think I'm not creating proper relation may be because its only updating for one year.
I'm using Access 2003.
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Aug 27, 2013
I am having an issue where a small percentage of my records do not follow my related Tables.
ex: 3 tables
tblEmployee
-intEmployeeID
-intWorkCenterID
tblWorkcenter
-intWorkCenterID
tblManager
-intManagerID
-intEmployeeID
-intWorkCenterID
where:
tblemployee.intworkcenterID -- tblworkcenter.intWorkcenterID -- tblManager.intWorkCenterID
Basically I have my general employee information in the tblemployee table, the workcenter information in the tblworkcenter, and the manager of the Workcenter in the tblManager. This is correct for 99% of the employee population. however, there are a few employees whose manager isn't the 'general' manager for the employees assigned workcenter.
How I can adjust an individual employees manager, while maintaining my structure? or would i have to go back and add the managers ID to a field in the tblEmployee Table?
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Sep 27, 2012
I have a built a database to record and collate info about clinical trials that are run within my department. I have one large table [Trial Info] which contains all trial info and have created a second and third table [Milestones] & [Comments] to collect dates of various milestones and a notes that occur throughout the course of a study.
The milestones (dates) are recorded in the 2nd table and the comments are recorded in the 3rd table.
All data is entered by staff on forms. The first form captures basic info about the study, once this has been entered, the idea is to click a button to open the second form to document the trial milestones, this form also contains a subform for listing any free text comments required during the life of the study which are stored in the 3rd table.
I have setup the relationships between tables as best I can.
The main table with basic trial info is the parent table, linking the primary key to the foreign key in the second table, the foreign key of the third table is related to the primary key in the second table so these tables should be looking up the correct clinical trial as far as I can tell.
The form containing data from the main table has a button which I have set to open the Milestones & Comments form, and I have set this to open to the record that relates to the record in view in the primary form. The primary key is related to the foreign look-up key in the milestones table.
This opens the form fine, however this is not updating the foreign look-up key, this remains '0' which I assume is the cause of the following error when I try to save changes to the record
Quote:
You cannot add or change a record because a related record is require in table 'Trial Info'
How do I trigger the foreign key to update to the primary key so that the first time a milestone page is opened for a new study it creates a matching record?
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Apr 3, 2013
I have a relationship between two tables; the parent table is "Client Information" with a primary key of "Client_ID", the child table is "Event Information" and the foreign key is "Client_ID".
I know that within the Event Information table I can select which Client_ID to use as the link. I want to have that done within a form, however. I have a form for Client Information with a subform for Event Information. If I go into the table and manually set the Client_ID then everything displays fine.
How can I set the Client_ID in the subform to automatically match the Client_ID in the main form? I can only assume that these solutions require the parent/child relationship to already have been established.
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Jun 11, 2013
I am updating an existing database and I have a parent/child form and I want to filter the subform for the current parent form record? The two forms are linked together by woWorkOrderID/deWorkOrderID.
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Oct 15, 2014
I'm trying to create a capacity report for my database. Originally, I only had the one table, which summed the number of Packs and number of Images, worked out percentage capacity used and then put it in a report, showing for each week of the year. However since then, I've added a child table to this, allowing me to create subrecords. The reason we did this was so we could easily group together multiple mailings under one single master record, so to speak.
Going back to the capacity, I've managed to work it so the Pack capacity is worked out from the mailing quantity in the subrecord. However, the number of Images is only entered onto the Parent record. Now my capacity query is summing the same number of images as there are subrecords, where in reality I only want it to sum the Images in the main record. I know I could add an Images field to the child table and work it out the same way, but I'd rather not do that (because that's not how our business works).
So essentially the question is, how can I sum the Images from the parent table without repeating the sum and massively overexagerating the sum?
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Sep 21, 2012
I am using collect data via email process to collect data by email, purpose is to update not to add new records but to update. The condition for update is to have data from one table only.
I have 4 tables data from which should be sent by email. These tables are related. I made a query based on tables and query is update-able. When I use this query, wizard does not give option of updating the data but only of adding new records.
I tried to first make a make table from a make table query but that too have the same result.
Any ways to make treat these tables in a single table? Almost all fields except one shall be just to read and one field shall be updated.
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Aug 6, 2013
So I have a form, it has a few fields from a related table in it, related by the name. I click 'new' on the form, but when I click save Access complains about the related table does not have a matching record. How do I have it create a new record?
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Oct 7, 2012
I downloaded a sample treeview application I have modified most of its to suit my need, except one thing. I want link parent/child node the main form to the main form through a subform on the CategoryID.
The following is the original code where when a child not is clicked only pops up a "linked" msgbox. I need to modify the part of the code on the Select Case "C" in red:
Code:
'----------------------------
Sub DisplayForm(i As Integer)
'----------------------------
' for this Treeview I do not want a double-click on a parent node
' to open the applicable Category form, but pressing the shift key
' should open the marriage form applicable to the parent node. Shift
' or double-click on a child node should open the applicable
' offence form.
Dim strKey As String
Dim strTag As String
Dim strFilter As String
[Code] ....
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