I want to create a combo box filter - easy enough usually
However - the field I want to use is a foreign key field which, while it displays a meaninful description - it stores the id rather than the text
I want to create a combobox filter, but when I do all I see is the id's - which are meaningless to the user.
Is there a way to get these foreign key filters to display a meaningful text description??
Hi,
While designing a database, I came up with 3 different foreign keys in one table. I am afraid this is not right!
Is it possible to have this number of FK in one table or does that suggest a design flaw?
Any help will be very much appreciated.
B
I'm not new to access, and I understand normalization at pretty much all its levels, but right now I'm curious about a situation that I have just come across. The first time I've been in something like this, so I thought I would ask.
This is the setup.
I have employees. They are apart of a shift and a budget. Shifts and budgets are completely independent of each other.
The database needs to keep track of shifts and budgets over time. Therefore, 1 to many relationship to shift table and budget table.
But, the database also needs to keep track of attendance. And the user wants attendance tracked by Shift and Budget.
Shift and budget are completely independent of each other.
Currently, I have the relationships set up like this.
Employee (1) ---(Many) Budget (1)------(Many) Attendance
Employee (1) ---(Many) Shift (1)--------(Many) Attendance
When a new attendance record needs to be added, both the key to the budget and shift are added to the attendance table. The key chosen is dependant onthe Employee chosen, and whether the budget and shift are the CURRENT budget and shift that the employee is apart of.
I thought of running a query showing budget and shift by date descending, so that the latest budget / shift would be displayed, and thus the most current (SUPPOSEDLY) But, if a user put in a different date, or screwed up on the date, then the incorrect shift and/or budget would be displayed.
Date stamping an entry was an option, but there needed to also be a user entered date as well, to specify WHEN a user began working in that specific budget / shift. Therefore two date entries would be required. Duplicate entries in most cases.
I therefore decided to go with a true/false yes/no checkbox. Where the current budget or shift would be checked, and all non current ones would be unchecked (false).
Currently, this is how the systems works. And it works well. But it is dependent on some form code I created to set the yes/no checkbox to true/false depending on the situation.
I DON"T like doing this. Am I missing a way to do this "correctly" where by Access would do this "automagically" instead of via my trick.
The ONLY issue really, is that when a new attendance incident occurs, the user needs to put in the incident to the approbriate shift / budget. And if the current shift / budget could automatically be displayed without user intervention (IE user has to pick the shift / budget from drop down box after looking up info etc etc) since the current information SHOULD be known.
I've never done a table setup where two foreign keys are the many side of the relationship in a single table.
It is currently working fine, and seems to do well, but I wanted to make sure with others who might have had this experience. And also, any "advice" / "cautions" for this kind of situation so I don't step into it deep and have to fix it later.
More on the lot materials management program.
I have a series of related table:
Builder
Subdivision
Lot Number
Lot Option
Lot Materials Details
The [Lot Materials Details] table is populated by appending data from the [House Type Details] table tree as follows:
Builder
House Type
Elevation
Options Per Elevation
House Type Materials Details
The filtered Option Table in both branches determine which [House Type Materials Details] records get appended to the [Lot Materials Details] table.
The question is:
Is there any advantage, other than simpler queries later on, to adding the primary key from the [House Type Materials Details] table to the [Lot Materials Details] table.
It’s redundant because the [Lot Options Table] contains the [Options Per Elevation] primary key.
Any thoughts?
hi
i need to create a table, i've figured out to make LastName the primary key. But im not so sure about the foreign key, and whether it is necessary to put it into the table in order for all my tables to relate? Sorry if this doesn't make much sense.
Also, to clarify.. 3NF primary keys in one table cannot be used in another table??
thanks
Wow, I've found some good stuff here already... Thanks.
PROBLEM:
I have a table(we'll call it shipping) that has two columns FK'ed to another table (locations). My problem is I have no idea how to pull the information from the locations table into the shipping table.
DESCRIPTION:
My shipping table has a source and a destination column. Now, I have a fixed location list that applies to both columns and I'd like to avoid having a source tbl and a destination tbl... I'm an Access Neophyte to say the least (for now at least) but I have managed to put together a querie that pulls out most of the information that I need (name, phone number, yadda, yadda, yadda) but I can't seem to correctly link the FK's for the sources to the locations table as well as the FK's for the destinations to the locations table. When I run my querie I get an error or my Source(destination) column will display the correct information but the Destination(source) column will display ALL of the locations in the location table. Here's what I mean:
Source destination
detroit toledo
detroit cleveland
detroit San Diego
detroit London
detroit Paris
detroit detroit
Paris toledo
Paris cleveland
Paris San Diego
Paris London
Paris Paris
Paris detroit
.
.
.
The first and second source was detroit and Paris but the Destinations list all of the locations I have in the table.
How can I link two FK's in one table to another table in a querie?
Thanks.
Can a table have two foreign keys?
View 1 Replies View RelatedHi,
I have to create a database for work and for my sins I have to use Access. We are running 2007 but I'm having some difficulty in creating foreign keys in my linking table.
I've searched their help guide and looked on the net but I can't seem to see how I physically create foreign keys.
My structure looks like this:
Customer
CustID (autonumber)
Cust Name
Cust contact
Cust email
cust version
no of users
other info
Modules
ModID (autonumber)
Module name
licensed module? (tick box)
MiscSoftware
MiscID (autonumber)
Software
Installed on live
CustMod
ID
CustID
ModID
MiscID
Thanks
Hi there,
I am trying to model my database to create relationships between different tables in my database. During the process of doing so I ended up having one primary key in table A linked with to foreign keys in two different tables ( table B & table C) and both of those two table are junction tables to break out many to many between many other tables
Now for some reason!!! I feel that there is something wrong with my logic mapping and modeling of the relationships between tables due the fact of having one primary key linked to two foreign keys in two different tables :(
Is my intuition is right? should such case be considered as indicative of wrong modeling of relationships between tables in a single database
And if so what is the disadvantages of that link (talking down the road) when the database if fully populated? :confused:
By the way I am new member and new to database, so please take it easy on me :o
Many thanks
I've got a table - "Products" - in my database, with a text field - "Info" - which contains info about products.
Within this field I would like to have footnotes. To do this, I think the best way to do it is by putting numbers inside the text at the location of where I want the footnote to refer to. These numbers will actually be foreign keys to a table called 'Footnotes'.
I can then program the forms and reports to show any numbers as superscripts or whatever.
(Of course, if the user will actually want to insert a number into the text field which is NOT a reference to a footnote, I will have to make a workaround e.g. by making access put a symbol in front of the number, so access will know the number is just part of the text (and I will program the form to not show the symbol in front of the number)).
Is it wrong to have foreign keys within a text field? I think if executed correctly, it should work perfectly.
I have what I think is a normalised database that uses foreign keys quite a bit.
For example if I had a 'contracts' table which refers to 'clients', then there would be a tblClients, where each client has a primary key. The tblContracts would then refer to the relevant client via that clients FK only which would be linked to the client's PK in tblClients via a one-to-many relationship.
If I need any user for any purpose to see contract related information that makes sense to a human being, I simply construct a query with the necessary relationships that will show client information alongside contract information by substituting tblContracts' client FK with required information from tblClients via the appropriate relationships.
I think that is reasonably basic stuff (hopefully correct practice!)
But what about when I come to import a block of new data that needs to go into tblContracts? I'm not going to be given a list of client keys (obviously) I'm going to given their real names.
MS Access has (in theory) all the information it needs (via the relationships) to substitute client IDs (keys) for their real names and thus slot these IDs into tblContracts with the new data as appropriate, but how do I make it do this? (I know it could kick out errors if there are any duplicate client names, but let's put that to one side for a moment).
Right now, I have 4 related tables. There's a table with companies, one with people involved with companies, a table linking the two by having foreign keys of the company number and people names, and a table that indicates directors and their alternates.
Since there's a one-to-many relationship for companies/people to company-peopleID (A person can run multiple companies, a company has multiple directors, it's easier this way), a person's name can appear multiple times, as can a company, within that table.
In a company, a director may or may not have 1 and only 1 alternate director to him/herself. So, I thought the easiest way was to put an autonumber in the Company-personID table and have a table (alternates) that had two fields, "alternate" and "director", both using that autonumber to link them. However, it appears as though I can't link the same primary key twice to two foreign keys of the same table.
[URL]
I need some help creating a simple datebase to store my documents and other knowledge objects. There are two types of
knowledge objects I need to store: Documents and Questions/Answers. For this reason I have created three tables: Index,
Question, and Document.
The problems I am encountering is that the ID field in the Index Table is the Primary and relates to the ID field in the
other two tables. So basically when I am entering information it can either be a question or document. I want to create a
for so that when its a question that I am entering it records the information in the question table and when its a document
I am entering it records the information in the document table.
I'm a beginner at using access and don't know VB or SQL. Any help would be appreciated.
Table Structure
Index Table
ID (Primary Key)
Link
Type
Source
Reference
Question Table
ID (Foreign Key)
Question
Answer
Document Table
ID (Foreign Key)
Title
Summary
Notes
I'm developing a simple sporting records db. I have a 'Competitor' table listing competitors as follows: CompetitorPK, Name, Division, Club. I have a 'Contest' table listing contests as follows: ContestPK, Competitor1_FK, Competitor2_FK, Winner_FK, Score etc. My question is have I modelled tables correctly i.e. CompetitorPK will appear in three columns of Contest table. How do I define this relationship? What alternative is there to what I have done.I intend to use forms to populate both tables (independantly obviously).
View 4 Replies View RelatedI'm trying to understand how data is passed using foreign keys.
I'm using Allen Browne's 'Don't use Yes/No fields to store preferences' at: [URL] ....
I've also downloaded his sample DB, RelationBasics, to use as a guide.
Attached is my version of the Student / Sport DB as described on the webpage.
I use 2010 at home (saved as 2003 version) and 2003 at work (JPNSE OS). Both result in the same thing.
The problem I'm having is I cannot get the actual sports to display in the combo-box, only the Sport_ID number.
I've tried building both forms with and without actual data in the TBL_Student & TBL_Sports tables, but no mater what the result is the same.
I am using access 2007
i have a materialsUsed tbl that list all the materials used in a job and the quantity of each.
(ID
Material Code
Quantity
Unit of Measure)
I also have 2 look-up tables - 1 for the material codes and 1 for the units of measure
I have another table, priceperunitofMeasure
id
material Code (FK to material lookup tbl)
Unit of Measure (FK to unit of measure tbl)
Price
In my form Users will select material code from combo box - enter the quantity, and select a unit of measure from a combo box.
For example: they could enter the following :
Paint 2 gallons
Paint 3 tubes
Paint 1 pint
How do I lookup the price per unit of measure for each of these records in the price per unit of meassure table? The price per unit of measure table has 2 foreign keys.
In a nutshell, I have a form where the 'Record Source' is a table titled 't_02_0_Assets'. I have several fields in the table that have foreign key references that utilize the Lookup Combo Box display control to allow users to select from a drop down list in the form.
The issue I am having is that I can't filter the text in the foreign key fields (only the ID's ).
My attempted solution was to create a control on the form (text box) and bind it to each of the foreign key ID's using the DLookUp function and then reference this control in the filter code.
My question is... how do I reference this DLookUp textbox in my filter VbCode?
I have attached a '.jpg' image of various aspects of the form including the filter code on the 'On Change' event.
I am having a problem with a filter that i am trying to apply to a subform.
I have a button on the form that when clicked should filter the subform (which is in datasheet view) to the criteria i set.
This criteria will eventually run from a combo box but I wanted to just get the filter working first.
I put the following code into the onclick event of the button:
Items.Form.Filter = "Items.Form.[Master Category] = 2"
Items.Form.FilterOn = True
I chose the criteria 2 for the filter just as a test as I knew there are some records with that value in the master category field.
The problem is when ever i click the button to apply the filter it clears all the data as if it has not found any records with that value.
Is my syntax and method OK? Why its filtering everything out?
The only other thing to consider is that the field I am filtering on was set up using a lookup wizard linked to a table so the values stored are a foreign key (hence the value being 2 rather than something descriptive).
I have 2 comboboxes, the first one is called "activity", whereby I have 3 options to choose from, and the second is called "level".
When I click an "activity", for example Drawings, I want the "level" combobox to list a unique set of options for that category. and if I click on a different "activity" for example Planning, I want the "level" combobox to show a completely different set of options.
If anyone can give me any help on how to do this then I would be very grateful!!
Thanks
Angela :eek:
I need to be able to use a combo box on a form to filter the records shown. The fields on the table are as follows:
ID No, Ref No, Start Date, Comp date, Price etc.
I have set the form up to run off a query that shows all records with a certain ID No. Each ID No has a number of reference numbers. I would like to use a combo box on the form so the user can select a Ref No and the form would be filtered to show only the details of that specific ref no.
What is the easiest way to do this?
Any help would be greatly appreciated.
I'm building a filter using comboboxes and I'm having trouble with two of them. One is to filter by records that are completed or by records that are not completed. The other combobox is to filter by records that have comments or by records that have no comments.
Filter7
Row Source Type: Value List
Row Source: Completed;[tblMainData.Status]='Complete';Not Completed;[tblMainData.Status]<>'Complete'
Column Count: 2
Bound Column: 1
Filter8
Row Source Type: Value List
Row Source: Comments;[tblMainData.Comments] Is Not Null;No Comments;[tblMainData.Comments] Is Null
Column Count: 2
Bound Column: 1
The VBA Code is:
==================
If Me(Filter7) <> "" Then
strWhere = strWhere & " " & Me.Filter7.Column(1) & " " & " And "
Debug.Print strWhere
End If
If Me(Filter8) <> "" Then
strWhere = strWhere & Me.Filter8.Column(1) & " And "
Debug.Print strWhere
End If
==================
I'm getting an error on building the strWhere variable. Can I use filter criteria statements in a combobox column?
Thanks,
PC
Hi there
This im sure is a easy question but I am just trying to learn access so I am having a few problems.
I have made a form that contains 2 comboboxs and a listbox.
How can I use the 2 combobox to filter a table and to place the information into the listbox.
Is it possible to use either 1 of the combo boxes or both to get the filtered result.
Any suggestions would be great!!
TIA!
Hi everyone
I use Access 2003 and saw Ken Higg's sample database to filter records in a form using a combobox. I managed to replicate his settings and wondered about an extension to the principle, but I don't know if it's possible.
In the sample, a value is selected using a combobox and all matching records are filtered so it's possible to scroll through them. Is it possible to have a second (or more) combobox on the form so it is possible to filter on one or another criterion? This would mean one combobox filling the other one and I realise that the one that Ken provided is unbound.
The reason that I'd like to do this is, for instance, if there are records with Surname, 1st, 2nd and 3rd lines of the Address and Postcode, I may wish to filter records by entering the Surname or Postcode. Each of these fields would have to be displayed in a combobox. As the sample is set up at present, only one of the Surname or Postcode has to be selected via the combobox and the other is a textbox.
It may be that what I'd like to do isn't possible - or someone may have come up with some other idea. I'd prefer to have the search/filtering on the form, rather than using the buttons on the Form View toolbar.
Thanks for your patience.
Juan
I have three comboboxes on a form – Fabric, Degree, Color.
The row source type for each is Table/Query. The row source is a Select Distinct query. I’m using a query so the list will populate itself. The choices the user makes in the comboboxes are used to filter called forms.
Would there be a way to include the word “ALL” in a drop down list in addition to the data generated by my query. If the user chooses “ALL”, the called page will not be filtered on that particular choice. I just created a record with “ALL” in those particular fields. That seems to work, but I think there might be another way.
Thanks
I am running into a problem with just one form in my database. I was getting the error 'Can't build a link between unbound forms'. After searching here and elsewhere the solution is/might be to type the linked fields into the child and master proprty fields. However when I do that I still can't get this form to work. Would anybody please take a look at the file attached - I trimmed it down to two tables with a few records and a form/subform.
I want to make a selection in the combo box and have the filtered results displayed on the form below - simple and I have done the same thing in the database elsewhere but I just can't see why it won't work here.
Thanks
Steve
I am using Access 2010, Windows 7
I have an unbound form with a combo box and a bound subform on it.
I am using the combo box to get a value to filter (and display) records in the subform.
My code is:
Private Sub cboSessions_AfterUpdate()
On Error GoTo cboSessions_AfterUpdate_Err
Me.SSubform.Visible = True 'subform was initially invisible
Me.SSubform.Form.FilterOn = True
Me.SSubform.Form.Filter = "[LinkID]=" & Me.cboSessions
Me.SSubform.Form.Requery
cboSessions_AfterUpdate_Exit:
Exit Sub
cboSessions_AfterUpdate_Err:
MsgBox Err.Description, vbCritical, "PROGRAM ERROR"
Resume cboSessions_AfterUpdate_Exit
End Sub
The subform is initially invisible to stop it showing all records.
This works fine AFTER the first selection(!) - the first Update of the Combo Box just doesn't filter the subform??
I have tried putting code in the main form's On Load Event - allocating a value to the Combo Box and running cboSessions_AfterUpdate but that does not work either.