Tables :: Build A Table Relationships
Jan 2, 2015
I am attempting to build a table relationship, however when I enforce referential integrity, I keep receiving the message: "No unique index found for the referenced field of the primary table".
I checked and I have no duplicates in the primary table or secondary table.I will set up the two tables as thus: 1. Master table - People Who Eat 2. Secondary table - a table for all people who eat pizza.
I am trying to link my pizza table to the Poeple Who Eat table. I have created my own primary key for each table (an account number). My secondary table is much smaller in population than the People Who Eat table (which would include data from other subgroups). I am trying to get the 'yes'/'no'/'uncertain' from the secondary table into the primary table without manual entry.
I have searched all over the web and have not been able to find why the tables will not link. I am new to Access, so there may be something I am overlooking. Is there a way to get this information from the other table other than building a relationship?
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Aug 30, 2013
I have tbl_orders which records orders. I have a linked table called tbl_order_lines which details the items against each order.
In a nutshell, an item can only appear once in an order. However, I do not know how to create a relationship or code the frm_order in order to reflect this in my DB.
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May 28, 2014
I created a database a few years ago and it has been working well. This database is split.
Recently I started to update the front end based on user feedback and I am adding some queries.
I am noticing that sometimes I try to create a new query and Access tells me that the tables that are involved in the query are not related. Sure enough if I check in the front end, the table relationships are not the same as those in the back end and while the table relationships I need exist in the back end, they do not in the front end.
While the relationships were initially created in the unsplit database, it is possible that I added some of them later during past development/updating processes when the database was already split. This is the only reason I can think of for them to be different.
When I add a relationship in the back end (new table or bug fix) do I also need to add it to the front end if the database is split? if not, why would they be different? What kind of issues can this create?
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Feb 10, 2014
I am using Access 2007, and I mistakenly created a duplicate table in Relationships. And, I have not been able to removed it or delete it.
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Sep 13, 2012
I have 3 tables
tblProductInfo
- ProductID
- ProductItemNumber
- JDEDescription
tblFacility
- FacilityID
- FacilityDescription
tblProductFacilityMM
- ProductToFacilityID
- ProductIDFK (combined with FacilityIDFK to make a PK)
- FacilityIDFK
As I'm writing this out, I am realizing that tlbProductFacilityMM.producttoFacilityID is probably not necessary, but that I don't expect that to have much significance to the issue. So I've setup a query between the two tables:
Code:
SELECT tblProductInfo.ProductID, tblProductInfo.ItemNumber, tblProductInfo.JDEDescription, tblProductFacilityMM.FacilityIDFK, tblFacility.FacilityDescription
FROM tblFacility INNER JOIN (tblProductInfo INNER JOIN tblProductFacilityMM ON tblProductInfo.ProductID = tblProductFacilityMM.ProductIDFK) ON tblFacility.FacilityID = tblProductFacilityMM.FacilityIDFK;
And used it to create my subform which is simply a drop down box for tblProductFacilityMM.FacilityIDFK. My main form is one that has already been in use for 6 months or so, it is based off the tblproductinfo table and needs to have the option to select multiple Facilities for each ProductID. I inserted the subform, but when I try to select a facility I get an error that reads:
Quote: Cannot Join Records; Join key of tblProductFacilityMM not in recordset.
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Sep 14, 2014
I'm trying to create a database at work keep track of projects I'm working on and all the different events that happen during the project.
I want the main table to be customers, which will include the job number (as the primary key) name, address etc. Then I need other tables that have information about the building permit that will include dates city names etc and then another table that would include information on our sales people and so on, there would be maybe 5 tables that all connect back to the customer table.
I have tried this several times and keep running into problems, I'm sure it has something to do with the relationships. I'm missing something. I can create 2 tables and it works fine but once I add a 3rd it wont work.
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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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Dec 4, 2006
Can anybody help me build the last table in my database? I have taught myself Access – and can usually get by with a little help from this forum. I have been trying for days to try and solve this !!!
The database is designed to manage feedback questionnaires from attendees of training courses.
I have attached the relationship diagram.
- A course may run for several days. The details of the course are held in the table ‘Courses’. During a course, attendees may be asked to fill in several Questionnaires
- An Attendee is a Person that attends a Course. Attendees are held in the table ‘Attendees’ and their details are held in the table ‘Person’.
- There is a ‘Library’ of questions that sit in the table ‘Questions’
- The questions can be assembled into “Standard Questionnaires”. These sit in the table called “Questdesign” which is a junction table. Assembling a Standard Questionnaire involves using a form to pick questions and give them an order (Qnumber). I HAVE DONE THIS.
- A specific “Questionnaire” is a “Standard Questionnaire” that is used on a specific course. The list of Questionnaires is held in the table “Questionnaire”
- Scoresheet is the junction table between Attendee and Questionnaire (an Attendee on a course may fill in several Questionnaires and a Questionnaire may be filled in by lots of Attendees.)
I now need a table (Scores) in which to put all the scores to the questions (in other words, the scores of the questions on the Questionnaires that are completed by the Attendees on a Course.)
At the end of the day I am aiming to have a form in which:
The Attendee number is entered and all the person’s details are filled in automatically) – I HAVE DONE THIS
The Questionnaire number is entered and all the course details are filled in automatically – I HAVE DONE THIS
A Scoresheet ID is filled in (Autonumber) - I HAVE DONE THIS
A subform appears which shows the right set of questions and question numbers for the appropriate Questionnaire – with a blank column so that the user can fill in the scores which get stored in the Scores Table. - I CAN'T DO THIS !!!
I cannot work out where to link my Scores table and how to build a query that drives the correct behaviour of the subform
I hope I have explained this clearly. I would be so grateful for any help. This Forum is fabulous.
Many thanks
NoVoiceLeft
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Apr 22, 2006
hi
hi
i have sql query in a string
strQuery="...."
how to create temporary table with the result of this query?
thanks
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Mar 28, 2006
Using Access 2000 is it possible to specify a starting location ie (c:) and using VBA search every sub folder from this point for files ending .mdb or .xls?
I want to be able to build a table with an record showing the file name and directory for each file found.
Any help most appreciated.
Regards,
Dalien51
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Apr 7, 2006
Access 2000: How can I populate a two field table (1. Table Name 2. Field Name) with the name of ever field within every table in my database using VBA code?
Regards,
Dalien51
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Feb 7, 2007
I have been building my DB and learning everything from scratch. If anybody could give me any advice as to where I may be going astray, it would be much appreciated as I feel like I've hit a brick wall. I run a building firm and need a DB to look after customer information, write estimates, invoices and ultimately do the accounts.
I think my DB needs are very basic to start with and I'm guessing the system only needs to be fairly simple and straightforward. So far my DB has:-
•Customer form with an in-built Estimate subform - this form gives me a brief outline of the customer and how many estimates I have for him.
•If you then double click on an estimate number (in the Estimate subform) this takes you to my Items form (when I create an estimate normally in Word, I have to break jobs down into their components and price each item individually, hence I made an Items table). Each item has an Item Cost.
•I then run the report “Estimate” and have set up a total calculation box on the report ready to print it out for the customer.
My problem is that I would like to know how I can get the Estimate Total to appear in my Estimates Table and Estimates Subform. So far I have achieved making a crosstab query to calculate the Estimate Total (Amount) for each specific Estimate ID, but I cannot get the Total from the Crosstab Query into the Estimate Table, from which I would probably be able to get it into the Estimate Subform. I have a suspicion I need to build an expression in the Estimate Subform - but.....
Once I am over this problem I will want to turn Estimates into Invoices and have that data displayed in my Estimate Subform too, although I think I have got a good idea of how to do this, I would again be open to comments/advice if offered.
Thanks Steve
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Sep 7, 2006
Hello!I have a table, with quantities in a field that I need to split in batches of 25, to build a new table. Example:object price qtyblah1 1.00 144blah2 2.00 76My results need to look like this:object price qtyblah1 25.00 25blah1 25.00 25blah1 25.00 25blah1 25.00 25blah1 25.00 25blah1 19.00 19 (5x25+19=144)blah2 50.00 25blah2 50.00 25blah2 50.00 25blah2 2.00 1 (3x25+1=76)I've been able to build a new table based on these values of 25 etc using MOD, but it's making columns. How can I build a new table and make new RECORDS using MODULUS (or another?) technique instead?? I hope this makes sense, and I hope someone can help.Cheers
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Nov 22, 2013
Im trying to sum a value within subform able before I even start I get ####Error as I have put in the control source the rule to create the sum
Code:
=Sum([TempTable].[hours])
I then have a function when another value is added it requires the text box which holds the sum value.
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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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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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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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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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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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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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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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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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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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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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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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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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