Attached is my many to many relationship setup. I would like to prevent the possibility of entering the same person more than once for the same training event. I am assuming that I do this by setting an index setting for a field the junction table?
View RepliesHi, I have the following structure:
Products 1-M ORDER DETAILS M-1 ORDERS M-1 CUSTOMERS
I have ORDER DETAILS set as a junction table so that many products can be recorded within one order. All is good apart from when i go into ORDERS and create a new order. I click the subform which links to the ORDERDETAILS. I then pick a product number(look up from products table). The problem is this: In the ORDER DETAILS I want to display the unit price of this product simply by picking the product id.
Eventually this would form the basis of an order form where I can pick Product Id and have it display unit price.
Any ideas on this one, I'm sure its quite simple!!
Thanks in advance
I explain , I have 5 tables :
Class ( classID , classname,... )
Student (studid , firstname, lastname , classID ,....)
Course( courseid , coursename )
Term ( termid , termname , begindate , enddate )
Score ( scoreid , studid , courseid , termid , score)
Note :
1) A class can contain one or more students (one-to-many between Class and Student tables)
The table "Score" is a junction table between three tables : Student , Course and Term because it contains three foreign keys ( I could use a combination of 3 foreign keys to make a primary key ! ) .
The tables ; "Class", "Student", " Course ", "Term " already contain data for each table I created a data entry form .
My biggest problem is how to create a form to enter students' grades or scores for each student that belong to his class.
I do not know how to do it especially since the idea is that :
On a form I would like to use ComboBox to select a class that displays student's list from class selected and a ComboBox in same form to select course and another ComboBox to select a term and then enter grades or scores for each student
This is my general idea to enter students' grades. The rules are :
A class contains one or more students
Each student takes one or more subjects.
Each student gets scores for each subject and each term(quarter)
So I have a form that has a sub form on it (based off of a junction table), indicating which category a particular project belongs to. It can belong to multiple categories:
ProjectID
100
Category
Admin
Finance
But I want to run a query to find all of the projects that are both admin and finance. When I do that now, it comes up as two separate records in the query, which is fine... but I have to know the projects before hand to find if it's in both, because it returns heaps of records, anything that says admin or finance... and that defeats the whole purpose. I want the query to show me JUST the projects that have both of those in their subform..
Is there an easy way to auto-populate a Junction table [in access 2010] given the following two tables with a many-to-many relationship for Tasks? The two tables are
Table 1) tblTasks (TaskID (PK), Description), and
Table 2) tblMeasures (MeasureID (PK), Description, Tasks)
If JCTN table is JCTN_Tasks_Measures (TaskID, MeasureID), is there a way to populate when tblTasks(TaskID) == tblMeasures (Tasks)?
Hi,
I have created a database that monitors containers that are being hired. When a container is hired some details are entered and remains the same until we receive an invoice to state that the hire has stopped. Subsequently, the database is updated and an invoice sent. The container is then hired out again and some details are entered on the database and so on.
There are two check boxes to state whether the container hire has been completed and whether the client has been invoiced.
I am attempting to stop duplicate entries of container numbers being entered onto the database when the transactions are not complete and the client has not been invoiced.
I cannot use a primary key because the containers are reused and hence the container number will be on the field more than once. I have also tried a find duplicates query, but this found duplicates in the whole table and returned only the duplicates that were in the criteria I had specified.
Basically, I want the validation or whatever to prevent duplicates only when the two check boxes are 0.
Thanks in anticipation for your help.
All the best,
Roly
Help! I'm on of those home grown programmers. I have the report all ready to go. Four columns with data from a table. The 4th column is showing duplicates that I would prefer just show up as blanks. Following the 'help' screen I changed the preferences for that box to HIDE DUPLICATES: YES. The help screen says this should work exactly as I hoped, but when I run the report every field is populated.
Any ideas??? I'm sure there is some small config change but It is beyond me.
Thanks,
t.
I have a form with a text box called txtID. When the user types a value in the text box I want it to check if the value already exists in the field ID in table "Headcount" (a linked table from SharePoint). If it does, then I want a pop up box to display with error. Is this a Dlookup function?
I've tried DCount but can't get that to work.
i have a table called tbl1. in this table i have field month, year, or trainee. is it possible that above mentioned three field found same data table automatically delte those rows. so i found only unique data. or their is another way to make this possible.
View 2 Replies View RelatedI have a Composite Index to prevent duplicates I get the error message. How can I trap this?
I resolved it with this PHP Code:
'Trap Error.
Dim DataErr As Integer
Dim Response As Integer
Dim Message As String
If DataErr = 3022 Then 'Duplicate value entered
Response = acDataErrContinue
End IfÂ
I have a client database that has recently had multiple duplicate entries. I need to reduce or negate this erroneous activity. I have a client table where I record amongst others, the following;
key
[christian_name]
[family_name]
[dob]
......
I believe that to prevent duplicate entrie via form I have created an additional field called "unique" given it as a unique index which I want to have populated with the joined fields first_name & last_name & dob (IE johndoe01/01/90), and then as user enters a new client it wont allow a duplicate.
However I need to fill all the existing customers (3600+) with the relevant joined existing data. If I create an expression I can cajoin the fields in a select query but when I try to make an update query the same syntax comes up with empty fields.
select query sql that worked to show field ...
SELECT divers.christian_name, divers.family_name, divers.dob, [christian_name] & [family_name] & [dob] AS Expr1
FROM divers;
update query that was empty ..
UPDATE divers SET divers.[unique] = [christian_name] & [family_name] & [dob];
I'm in Access 2013 and I built a form with multiple drop downs. Here is what I have in the same order of which the user must choose from......
Document "Field Observation", "Monthly Inspection", "Safety Roster" (The user must first choose the document from this drop down he is recording)
Supervisor "First & Last Name" (The user then chooses the first & last name of the specific Supervisor name he is recording the document for from this drop down)
Manager - This field automatically populates based on Supervisor.
AOR - This field automatically populates based on Supervisor.
Org Unit - This field automatically populates based on Supervisor.
Month "January", "February", etc. (The user then chooses the Month of which the document will need to be applied to)
I would like the form to trigger an error with "This document is already recorded for this month" when the user chooses "Monthly Inspection" OR "Safety Roster" for a specific "Supervisor" for a specific "Month" that is already recorded in "TBL_DataTracker". The TBL_DataTracker is where all of my records are stored.
Table in my access 2010 is configured to have a unique records (no duplicates)which has now records more than 2000 so i copied the table and pasted Structure only. what i would like to have is that new table which presently is empty should not add any record which is already available in old table. While entering data in new table i would like users to see the error if they try to enter the record which was previously entered in old table.
View 8 Replies View Relatedthere are many threads about Table Linking but i coud not find one that answers my specific questions.
1. Can i either prevent database from linking to my tables? (or give permissins )
2. If not, can i make the table read only when linking?
3. Is there a way to confirm what databases are linked to my tables?
Hi, can anyone explain to me in simple terms how junction tables work and how i would go about creating one?
View 1 Replies View RelatedI have created a junction table in my database.the tables being linked are tblplayerInfo to tblGuardianInfo. The junction table containd the PK of both these tables.
A player can have more than one guardian (Mum,Dad, etc) and a Guardian can have more than one player (two sons, etc)
On my form i display both sets of info. The player info in the main form and the guardian info in a subform.
I want to be able to add a new guardian to a player.
How do I update the junction table to reflect the new guardian addition, or does Access automatically create the record in the Junction Table (if so How)
I would like to create a database of organizations in my area that provide particular services. I had initially created an Excel spreadsheet, but decided that I'll probably need an Access database, so I converted the format.
I have one table that has the name of the organization, contact information, hours, and other info. In the original Excel spreadsheet, I used strings in two other columns for "languages" and "areas served". Some organizations offer services in more than one language and some operate in more than one geographical area. I've read posts, some books, and info on other sites and it looks like I'll need to use two many-to-many junction tables (one for each of the two remaining columns described above).
So, what I have done so far, is this:
Table: "Resources"
ResourcesID (AutoNumber)
Organization/Program (Memo)
Address (Memo)
...
Table: "Areas"
AreasID (AutoNumber)
Description (Text)
Table: "Languages"
LanguagesID (AutoNumber)
Description (Text)
JUNCTION Tables:
Table: Resources_Areas
Resources_AreasID (AutoNumber, PK)
ResourcesID (Number)
AreasID (Number)
Table: Resources_Languages
Resources_LanguagesID (AutoNumber, PK)
ResourcesID (Number)
LanguagesID (Number)
I have several questions, and I hope that I'm asking the right ones.
First, my junction tables, when I initially set them up have no information in them when I just open them (when I don't use the Design view) -- they just show the column headings. Is this right?
Also, when setting up the relationships, do I need to check the "Enforce Referential Integrity" box? And if so, it seems like I need to change the "Indexed" property for the PK's of all three of the main tables (not the junction tables) to "Yes (No Duplicates)" -- right?
My main problem is that I don't understand now how to assign multiple languages or multiple areas served to each record in the Resources table. Originally, as I explained above, I had these as strings in a particular cell in Excel (like, "English, Spanish, French"). Will I be deleting those two columns from the Resources table?
I can provide what I've got so far if that would help... and I would greatly appreciate any assistance (explanation, link to good tutorial, example databases, etc.). Thank you so much,
Matt
I'm at a place in my design where I don't want to go further without advice for fear of really making a mess.:o
I have Products, Customers, Customer Locations, and Customer Models that can have any number of combinations. I've joined what I think makes sense at the lowest level, customers with locations, and next model with customers/locations.
I think products is the outer most junction, because many customers can use the same product in any number of models and locations.
The attached diagram shows where I am now--multiple junction tables, and junctions of junction tables. Now each of these tables has other relationships to nomalize things, but those are not shown.
Is one more level, or nest if you will, the right way to do this?
I have a report with 2 access tables (1 Master table and another a daily feed table)
The Master table keeps a log of all incoming records. (once append it to this table, should not show in future reporting)
The Daily feed information within the last 48 hours. (uploaded from an excel report into access temporary table)
When the daily feed table gets completed, I append the records and updated them into the Master to avoid duplication.
When I upload the daily feed table and I match it against the Master table to find duplicates, how can I delete the duplicates from the Daily Feed table?
This is my code to find duplicates:
SELECT CMPreport.ID, CMPreport.MbrName, tblMaster.ID
FROM CMPreport LEFT JOIN tblMaster ON CMPreport.ID = tblMaster.ID
WHERE (((tblMaster.ID) Is Not Null));
I have an events table and a junction table that has a composite key with two fields; those are the only fields on the junction table and are FKs in my events table.
I have a form that fills in events to my events table and also fills in values to my junction table. The control source is a query of the two tables along with a couple of other reference tables for metadata associations. The form works fine... the first time. My problem is that, after I have entered an event that has my unique composite key for the first time (thereby entering a new record to my junction table), once I go to enter a second event that uses the same key, access tries to enter the record again and throwing a "3164: field cannot be updated" error instead of referencing the already created composite key.
I have the form set the composite values to the selected values on form load. Normally, I would just set the primary key to the primary key values and access would follow my logic, but in this case it always tries to make a new record.
Hi this is my first post... so hi all :)
ok what i have is a table with contact details 900k plus
there are about 90k of which are duplicates.
this is the basic feilds that are important in this case.
Id, data_source, data_recived, data_code,
what i want is to have a table with unique records (no dups in data_code)
this table will look like this...
Id, data_code, Num_dups, dup1_source, dup1_date, daysbtw_Dup1_dup2, dup2_source, dup2_date, daysbtw_Dup2_dup3 ,dup3_source, dup3_date, daysbtw_Dup3_dup4 ,dup4_source, dup4_date,
I know there is no more than 4 dups of each record.
what i want from this is a table that will give me a record of how many dups for each record then all the dates that they were added and the date between each record entry.
if anyone can help it would be great .
thanks in advance.
I am trying to set up a Real Estate database, and can't get the Relationships to work. I have three tables:
House Listings
Farm Listings
Clients
Clients can have properties in both House and Farm Listings Tables, so I need a Junction Table (or do I need more than one?)
The Primary Key fields of House Listings Table (HouseID) and Farm Listings Table (FarmID), become a composite Primary key in the Junction table. Is this correct?
Both the House Listings Table and the Farm Listings Tables have a field for Client ID. Is this causing me problems, as I can get the Farm and Clients Queries to work, but not any queries with the House Listings.
As this is my first attempt at creating a database with many-to-many relationships, please explain in simple terms what I am doing wrong.
I would appreciate any help.
Thanks
I'm working in the petro-chem and industrial service industries now, and am finding there are relationships I haven't had much exposure to in the past.
Can someone please help me with constructing the tables and relationships needed here?
This is something I should probably know, yet I've never created junction tables which must take into account nested data. I have created a relationship which works, but I feel it could be done in a simpler fashion.
By the way, I cannot find Pat Hartman's many-to-many sample db. It is either missing, or the restrictions on word length in Search just aren't letting me find it.
Table: WorkOrder is the primary table I'm working with. I need to store 4
pieces of information for every WorkOrderID, two of which have subs.
Here's a picture of the data I need to collect:
I’m having trouble defining Relationships I’m thinking I need a “Junction” Table and I have tried looking at the Orders.mdb but it hasn’t helped (I’m sure I’m just missing something) I just don’t see how it works. If at all possible please don’t just give the info try to help me understand so I can get the answer myself.
Here is what I have:
Far table:
FarNumID (PK) > autonumber
FarNumber > Text “224-10C”
FarTitle> Text
FarParagraph table:
FarParaID (PK) > autonumber
FarNumID > Number
FarParaTitle > Text
FarParaText > Text
AC table:
ACNumID (PK) > autonumber
ACNumber > Text
ACTitle> Text
ACParagraph table:
ACParaID (PK) > autonumber
ACNumID > Number
ACParaTitle > Text
ACParaText > Text
1. Each FarNumber can have only 1 FarTitle 1:1
Each FarNumber can have many FarParaTitles 1:Many
Each FarNumber can have many FarParaText 1:Many
2. Each FarTitle can have many FarParaTitle 1:Many
Each FarTitle can have many FarParaText 1:Many
3. Each FarParaTitle and have only 1 FarparaText 1:1
Thanks so much.
All I ever seem to do is sit about trying to figure this out and then give up and ask for help :(
I have three tables.
One for contacts
One for groups (groups like people attending meeting a, b c)
and a junction table as the top two create a many to many relationship.. one person can be part of multiple groups, and a group can have multiple members.
In the contacts table my primary key is an auto number, and is contactsID
I also have some contact details, and a groupID field
In the group table my primary key is GroupID and is an auto number,
it also have group name, and description
in the junction table I have a primary key, then GroupID, and ContactsID which are also set at primary keys and are set with the same values as the same named primary keys in the relavant tables (I beleive this defines them as foreign keys... i hope so anyway!)
I have the relationships set up as a one to may relationship from contacts to junction and groups to junction, contacts linking from ContactID to ContactID in each table, likewise with the Group table.
However, when I try to put everything into a main form for contacts,with a subform for groups, all I am getting is the autonumber... which isn't much good for my end user..... :( How do I solve this?
Thanks anyone that can help.......
I'm trying to add records to a junction table based on additional record added to one table via form in the many to many relationship.
Junction table = ClientAssociation
Main table = ClientMain (qry_NewClientNullAssociation identifies new record added)
Many to many table = Associations
I'm trying to do this upon clicking a command button that then opens ClientAssociation based on Client_ID. Then allows user to select mutliple associations (Asoc_ID) for Client_ID.
Here's what I have - I'm new at this...
Private Sub ClickAssociations_Click()
On Error GoTo Err_ClickAssociations_Click
'Open recordset with new client records
Dim db As Database
Set db = CurrentDb
Dim recClient As DAO.Recordset
Dim strClientID As String
Set recClient = db.OpenRecordset("qry_NewClientNullAssociation", dbOpenDynaset)
'Loop through new client ids
Do While Not recClient.EOF
strClientID = ClientMain.Client_ID
Dim recAsoc As DAO.Recordset
Dim strAsocID As String
Set recAsoc = db.OpenRecordset("Association", dbOpenDynaset)
'Loop through asoc ids
Do While Not recAsoc.EOF
strAsocID = Asoc_ID
'Open junction table and update records
Dim recClientAsoc As DAO.Recordset
Set recClientAsoc = db.OpenRecordset("ClientAssociation", dbOpenDynaset)
With recClientAsoc
.AddNew
!Client_ID = strClientID
!Asoc_ID = strAsocID
!CheckBox = False
.Update
End With
recAsoc.MoveNext
Loop
recClient.MoveNext
Loop
Dim stDocName As String
Dim stLinkCriteria As String
stDocName = "frm_Associations2"
stLinkCriteria = "[Client_ID]=" & Me![Client_ID]
DoCmd.OpenForm stDocName, , , stLinkCriteria
Exit_ClickAssociations_Click:
Exit Sub
Err_ClickAssociations_Click:
MsgBox Err.Description
Resume Exit_ClickAssociations_Click
End Sub