Tables :: Inserting Foreign Keys Within A Text Field?
Aug 28, 2013
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.
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
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
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.
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.
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.
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.
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?
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
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).
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).
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.
i have made two tables with data from an excel sheet. The excel sheet has many duplicates and im trying to eliminate this. The tables are:
tblTasks and tblTeam. Both have autoincrementing primary keys, and the tblTasks table has the TeamID (primary key from tblTeam) as a foreign key.
My question is, how do i populate the TeamID field via perhaps a query, as it is blank on all records. I have over 5000 tasks so a manual approach is what im trying to avoid. A sample of the fields in the tables is as follows:
tblTasks
TaskID - PK Task Name Team ID - FK
tblTeam TeamID - PK Team Name
there's also a Staff table. tblTeam has a one to many relationship with the Staff table. tblTeam also has a one to many relationship with the tblTasks table.
Hello everyone - what I have is a a set of default text's that I need to be able to insert into a memo field - this is how I've set it up (Access 2000)
A table with the text fields in it called wordings table comprises of Id field wordingnme (txt) wording (Memo) and I have a combo box on a form which looks up the wordingnme and hold this info - I need to have a button that will take this wordingnme and insert the wording that it relates to into the field of my record - Called Endor (memo)- I will have many text s say upto 50-60 but when I insert these into endor field I will probable only use say 5 or 6 at any one time on the record line so an example follows
line 45 in endor I wish to insert wordingnme "A" and then Wordingnme "B" I also will do some free form type within this - any idea's :eek:
Access 2010..One organization that we work with provides us with a block of numbers for each of the two types of contract products we order from them; we do order non-contract stuff from them also.The block of numbers are the same (i.e. 20000 to 30000 this year) for each of the two products. This means that each product can have the number 20000, for example. We call this the Tracking Number. If it is one of these products, we need to select the Contract Number.
For all other one off orders we have with them, we assign our own Tracking Number starting with 00001. This Tracking Number cannot duplicate unless it is one of the aforementioned two products.Both the Tracking Number and Contract Number are in the same table. The user selects the Contract Number from a form (connected to the Contract Number table that has all the details on the contract) and the Contract Number is populated in the same table that has the Tracking Number.Each order must have a Tracking Number (no null)..Not all orders need a Contract Number (null okay).The Tracking Number and Contract Number combination cannot duplicate.I tried setting the primary keys to more than one field in the table, but they cannot have null values.
If not... I have been working on Plan B.... an AfterUpdate on the form (either the form or a field... don't know yet) that looks at a query that only has results if there are duplicate values.
Is there a way to insert a hyperlink in a field title on a table? For example, I have a field that is a check box for whether the person has taken a class. What I would like to do is insert a link in the field title for that class so I can click on it and bring up the supporting documentation in a PDF file for that class.
i have build a small project using access 2003 and vba code one of the forms contains sub form the main form contain the main data about school and in sub form populate different > textboxes for details about classes my problem is how to fill these text boxes in this sub >form for different grades depending on id of main form and how can i change the values and >moveing first or next buttons these are simple picture
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 have two tables in my Db: tblMaster & tblAddresses. They are joined with a one-to-many relationship, with the addresses being the "one" side. Many entries in tblMaster have the same address.
I use a form, based on a query, to add records which creates the new vendor in tblMaster, and (if I have contact details), a record in tblAddresses. The problem is that while the PK is created in tblAddresses once I add the address info, the related FK field in tblMaster is not populated with that #.
I have two tables tblPatients (pkUMRN) and tblAdmissions (pkAdmissionID, fkUMRNAdmission). pkUMRN is not auto-number, but is an 8-digit alphanumeric code unique to each tblPatients record. I have set up a one-to-many relationship between tblPatients_pkUMRN and tblAdmissions_fkUMRNAdmissions (each patient can have multiple admissions).
Is it possible to allow the entry of a new tblAdmissions_fkUMRNAdmissions to create a new tblPatients_pkUMRN? IE can you create a new primary key from a new foreign key?
Along a similar line, if the primary key already exists, how would you autofill a form with data from tblPatients when the tblAdmissions_fkUMRNAdmissions is entered in to the table?
I looked through your forums and didn't see this question answered. Forgive me if it is already there and I couldn't find it.
I have a report that I want to add a new text box to. When I create a form there is no problem choosing the different control sources of data that I want to put into the text boxes on the report. However, once I have created the report I can't seem to go back and make the data come through correctly if I am adding a new text box.
Example: I want to add a text box that is pulling through data from a field named "Duty" in a table named "Container_Vendor_Information". I put the text box into the created form and navigated through the control source choices to get the text box to point to where I want it to. Something goes wrong after that. When I close the form and try to reopen it I get a pop up box that is asking me to enter the parameter values for "Container_Vendor_Information."
I know there has to be an easy way to do this. All I'm doing is looking to add a new text box to an exsisting form. Any thoughts would be most welcome.
I would attach the database but I guess I don't have enough posts yet to have that option.
