Composite Primary Key in Ms Access 2010. I shall try and explain my tables in detail. So my first table is "Client Database" where the field "Buyer" is primary key. This is connected to my next table "Project Database" which has fields such as Work Order #, PO #, PO Date , Buyer etc where Work Order # is the primary key. Finally "Projects Database" is connected to Order information. Now the problem is until now, I always had 1 PO # for each Work Order #. However now I am facing a situation where my client has clubbed multiple PO #'s for the same Work Order #. I need to trigger the Primary Key Violation only if both the Work Order # and the PO # are the same.
I am creating a bridge table to get rid of redundant data. I am doing it by making a composite of the primary keys from the two tables I am bridging. The error message when I get to a certain point is "You cannot add or change a record because a related record is required in table tblMachCent." Both the numbers I am using to create this composite key are in the tables necessary, so I am not sure why I am getting this problem. Any suggestions??
I have a rather interesting situation involving creating a primary key. Basically I have two tables.
Table 1
Date, Customer, Part Number, Work Order, Qty tested, qty failed, tech name
Table 2 Defect, reference, quantity(defect), defect cause, part number, work order
The ideal relationship I want to create is that for every Table 1 there are multiple table 2. Regular one to many relationship. The problem is that in the first table it is possible and probable that there will be duplicate records because of the process. The test parts by individual carts, but often they're exactly the same parts with same work orders and same everything else. How should I go about doing this. I don't want to just create an autonumber for each record if possible. Any suggestions?
Is it possible that a composite primary from table A to be a foreign key in table B? I have two tables: A and B. The A has some personal details such as first name, surname, phone number, etc. Since no personal ID is given in my project, I am thinking to use first name + surname as the primary key of table A. But when I wanted to make the relationship between A and B (in B I need to use these 2 name fields as the composite primary keys, too) and ticked the option “enforce referential integrity”, an error message prompted out said it could not find the only primary key in table A.
What should I do with this? Or it is impossible to have a composite primary key to be foreign keys (but also primary) in another table?
It will be great if someone could answer this! Thanks!
I've noticed that the great and the good all seem to recommend not using composite PKs. Does that even go for join tables in the middle of a many-to-many relationship? Not sure I see what's to be gained by adding an ID and making that the PK.
I am trying to set a primary key on two fields. the problem is that the one field is null for some records. They will eventually fill them in. However, because it is null now it will nowt let me set it as a primary key. I tried setting the field, in the properties, with a default value; but it would not take it.
I am trying to run a query that links to tables, orders and invoice together. I am pulling fields from each table, with a relationship between Order# which is found in both tables. The only problem is, order# is a composite key in the order table and strictly a foreign key in the invoice table, referenced through a combo box drop down. When i attempt to create a query, it will not run. (Also will i find a similar problem with my combo box reference?) Any ideas on how to create a query would be appreciated.
I have a question concerning the automatically sequential numbering of a primary key as part of a composite primary key.
Tbl_treatment: ID=numeric field (also in tbl_pt and in tbl_tumor) Tumornr=numeric field (also in tbl_tumor) Treatmentnr=numeric field
[ID] and [tumornr] are fixed and i would like to automatically number [treatmentnr] per [ID] AND [tumornr] in a way that the output will look like this:
However, when i use the SQL-formula below my output looks like this. It seems as if the function is not properly taking the composite primary key of [ID] AND [tumornr] into account or not finding the true max value:
I am trying to join 2 tables with composite keys - each of them have the same 4 columns as part of its key - date/person/problem/date sent.
Table 1 has 5 columns (4 key columns + 1), Table 2 has the same 5 columns plus 1 additional column (Comments).
I am trying to match the Comments column in Table 2 to Table 1 and show the output in another table.
Currently, I've related the 4 columns in each table to each other, each relationship defined as including all records from Table 1 and only the records from Table 2 where the fields are equal.
In the fields, I have 5 Columns from Table 1 and the last column (Comments) from Table 2. When I run the query, I get all the records from Table 1, but not all of the Comments that match from Table 2 are shown.
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.
As you see its a composite key. Now each time a new record is created i want the ConfNo to autoincrement within its ConfYear. I used a byte as its not usually more than 4. Autonumber does not work as part of a composite key i found out.
2014 1 2014 2 2014 3 etc
And revert to 1 when ConfYear input changes to 2015
Is there a simple way to do this with say, a macro, or is the only way with VBA and DAO?
I am creating a database that tracks the selling of products amongst other things.
The user will enter in an order and may delay invoicing until the customer approves the quote - at which time the order is turned into an invoice.
In the transactions table the OrderID, ProductID and CustomerID constitute a composite key.
I want to be able to view the order and change it by either deleting or adding ordered items (obviously prior to invoicing) but because the ProductID is part of the composite key I cannot delete a line item.
Perhaps the solution is to remove ProductID from the index or is there a better way?
i have 4 supplier tables with identical field names but different databases in sql.I want to have them all in one table and only want the information for reference i do not want to edit any of the data.I need to create a new primary key number for the complete table. The data will need to be refreshed as the data comes from MMS Sage looking at company PLsuppliers.
I have tried a linked SQL union view- but this has no primary key.I need to keep the Primary key consistent as the data saved in other tables will use this field.The overall goal is creating a Purchase order system and this list will be my complete supplier list.
I need to create a table with 2 sets of different information both referring to job types. the problem is that i need the autonumber which created the job number to scale together. so both tables have a primary key of "job number" and i want the autonumber to only ever use 1 number in both tables.
e.g.
job type 1 - autonumbers - 1,2,3,4,6,7,9,10 job type 2 - autonumbers - 5,8,11,12
I have mapped everything out and built it in Access (but haven't entered any data yet). My question relates to structure. The data is based on artifacts, each piece is recorded with an automatically generated primary key in the main table. There are a number of features (type, decoration etc.) that are documented in related tables (included in/linked to the main table with foreign keys). Aside from these (the features I will query on), each piece has a number of characteristics to be recorded (size, colour etc.). Because of form/table size, I have broken the information into three tables (a main table with ID details, a second with Sizing and Dimensions, and a third with Materials etc.).
My question is: Can the main ID primary key from the main ID table also be used as the primary key in the 2 other basic information tables, with these 2 linked to the main table in one-to-one relationships (so it's an auto-number in the main table and an integer in the other two). This to me would be much easier to navigate than to have one long giant table with all these basic details.
I have created a main data entry form with a "navigation form". 5 tabs/pages. Tab/Page 1 = main ID. 2 and 3 are the two broken apart tables mentioned above. 4 and 5 are forms based on related tables that have their own subforms included. Both 4 and 5 are based on tables in which the main ID primary key is entered as a foreign key (in one-to-many relationships with the main table). Since this was done with a navigation form (instead of adding each of the 4 as subforms), will it still allow me to enter all relevant details for one piece into each tab/page, and save it all together automatically (whenever I enter a new piece into the main ID form)? Will the primary key be automatically generated throughout, or do I have to enter it manually in each tab/page?
The problem I have is that in the Supervisor field, it identifies the supervisor by his/her EmployeeID. I would like to create a query or merge tables so that the SupervisorID can look for a matching value in the EmployeeID field and return the last name/first name.
I am importing data from excel and I want to put a primary key on a column but it doesnt let me saying "primary key cant contain a Null value", coz I have a "NO" or "O" value. But i dont understand why is it a problem as I have specified the field as text not number.Also is it necessary for the table to have a key ?
I have constructed a DB for work to record accidents, however I am running into problems. On each form I have a button that Saves the data closes the current form and opens the next form, depending on what data was entered. I have this ruuning fine using this code,
Private Sub SaveRecord_Click()
Dim NextForm As String
If Me.Status = "Pupil / Child" Then NextForm = "StudentDetail" Else NextForm = "EmployerDetails" End If
DoCmd.save DoCmd.Close DoCmd.OpenForm NextForm End Sub
Private Sub SaveRecord_DblClick(Cancel As Integer)
Dim NextForm As String
If Me.Status = "Pupil / Child" Then NextForm = "StudentDetail" Else NextForm = "EmployerDetails" End If
DoCmd.save DoCmd.Close DoCmd.OpenForm NextForm
End Sub
The primary key of this form is "PersonKey" and the two forms taht could open, each have"PErsonKey" as a foriegn key. However the key does not get brought across into the next form and the save function does not appear to work on all forms... :confused:
I put another button on this form using the control button wizard, and it gave me this code,
Private Sub Command23_Click() On Error GoTo Err_Command23_Click
I have to tables. One named wire and the other named Input. As my title says there is not unique ID for the tables to relate.. the only thing to relate is one ID where is not unique for all the rows
In the Wire Table I have 3 rows using the same ID, lets say 123. In the Input Table I have 1 row using the same ID as above, i.e. 123
I need to select a couple of fields from Wire Table and 1 field from Input Table The only relationship I have is the ID 123.... since the ID in Wire Table is repeated in 3 rows.... I would like to use the same value from the Input Table to be the same for the 3 rows in the other table.. Below is an example:
Wire Table:
ID Group 123 A 123 B 123 C
Input Table ID Description 123 Analog
My wanted result would be
Group Description A Analog B Analog C Analog
I tried using the Left join or Join function, but somehow the resulting table has many duplicates of the rows...such as:
Group Description A Analog A Analog A Analog A Analog A Analog B Analog B Analog B Analog B Analog ...
Any Idea on whats going on and how can i solve this problem????
In a many-to-many relation, one create joint table and use two columns of both ID's in a Composite way. This what the text books recommend.I had a Form/subform to view the relation between the two table. I tried to add to the subform a new relation Access did not allow me to do it. I can go to the joint table in datasheet view and ADD to my heart content observing the unique condition.
If I change the design of the joint table to auto as PK and the two ID's with no PK in either, I can update from the subform .WHY the Composite Keys do not allow me to update the joint table by adding new records in the subform ???
I have just inherited a database that currently has no primary key set up. I wanted to add a two part primary key, but have run into a couple problems. The purpose of the database is to keep track of parts that have come back for repair. I wanted to set the key up to be a combination of the call number and the part serial number. I should always have a serial number, but the serial number can be in the table more than once, as it could have needed repaired more than once. I will normally have a call number for each record.
However, the call number could be repeated more than once, if more than one part came in on the call. The combination between call number and serial number should always be unique (each time a part comes in, it should be on a different call). My problem is arising, when a part is just pulled off the shelf of the factory and sent in for an upgrade. In a case like that, there is no call number. However, a serial number will never come in more than once without a call number.
So the combination of call number and serial number should still remain unique. When I try to set this up in the database, it tells me that the primary key cannot contain a null value (referring to the times that a serial number comes in without a call number). I want to get this set up so that the people entering data in the database will not be able to enter the call number, serial number combination more than once. How can I do this if one part of the primary key can be null?
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 have three tables: the 1st is for product's identification, the 2nd is for registered products, and the 3rd is for under-registration products
and the primary key for the three tables is the Registration Number and there is a one to one relationship between the product identification and the registered products and a one to one relationship between the product identification and the under registration products
What I want to do is to make an append query to move the under registration product to the registered product when its process is over.
One of my problems is with the primary key for the under registration products table, as they only get their registration number when the process is over. so how can I enter data into this table without the value of the primary key ?
When I first was making my database I used all auto numbers for PK's. But then I read an article or two saying that you really don't need to do that if you don't have to (actually, the article said "don't use autonumber if you want anyone to understand your database). I have a few tables (most employee experience type tables) where I just use the word as the PK and there is no auto number in the table at all.I continue to build my database?
