Hello all,
When I try to create a relationship between 2 fields of 2 different tables and that I choose "enforce referential integrity", the an error message appears, saying that the relationship should include the same number of fields and same type of data.
But I chose on field of each table to create the relationship, and both are of the same type in their respective tables...
Can someone help me?
Thans
I am trying to conduct a query that is based on two separate queries. Is there a way to that the queries can be related based on multiple fields?
View 1 Replies View RelatedWhat am I doing wrong that I cannot get this to work?
I have a table with Patient Details - the Primary key being called PatientID and this is an Autonumber.
I then have a table called Episode Details. I want them to be linked via the PatientID. When I set up the forms however, it won't work.(Relationship PatientID - PatientID one to many)
I think it is something to do with the Autonumber but can't work out what...
ok, let me please ask this question regarding a payment relationship in my database
it will be paid in four ways, cash, creditcard, cheque, paypal
each of these payment types will have their own features..
eg creditcard (name on card, card number)
cheque (cheque date, date cleared)
paypal (username...YOU GET THE PICTURE
so is this below way a good way to store these details, or can i do it with 4 less tables..
http://bb.1asphost.com/antonyx6/untitled2.jpg
if this way is correct, i dont see how each id will be entered..
eg
if i enter some cheque details.. will that lead the chequeid to be linked to the paymentid, and the paymentid to the bookingid, and the bookingid to the booking details etc
For reasons I need not get into as it generally proves to be a distraction, I need to document the relationships in databases.
I've been playing around with .Relations with some success.
I can easily get the relationship's name, Table Name, Table Field, and ForeignTable.
Code:
For i = 0 To objDestDB.Relations.Count - 1
With rsMigrateRels
.AddNew
!RelNumber = i
!RelAttributes = objDestDB.Relations(i).Attributes
!RelFields = objDestDB.Relations(i).Fields.Count
!RelFieldsName = objDestDB.Relations(i).Fields(0).Name
!RelForeignTable = objDestDB.Relations(i).ForeignTable
!RelName = objDestDB.Relations(i).Name
!RelPartialReplica = objDestDB.Relations(i).PartialReplica
!RelProperties = objDestDB.Relations(i).Properties.Count
!RelTable = objDestDB.Relations(i).Table
.Update
End With
Next i
However, despite lots of digging into the other properties and attributes associated here, I cannot yet figure out how or where to get the:
ForeignTable field
The type of relationship (1:1,1:many,many:many)
Why and where do we create a multiple field relationship in Microsoft access.
The relationship between CompanyContacts and CompanyProducts.(Adopted from Microsoft access 2013 inside out by John Viescas).
What was the main purpose of using such a relationship here and where are such relationships frequently created.
I have two tables containing data from two separate sources. The unique "link" between the two is a JobNumber field. I need to set up a relationship between the two tables using the JobNumber field.
Problem:
In one table, the JobNumber has been input in this format: 12-00345-01
In 2nd table, the JobNumber has been input in this format: 12-00345-1
How can I tie these when the 2nd table is missing the "0"?
In table 1 fields Factor, Aggregations, Stat, and Days Back are fields that make up a multi-field primary key [URL].
I want to create a relationship between that multi-field primary key and another table, call it table 2, and make it a one-to-one relationship.
How do I do this in MS Access 2013?
Each each record in table1 has a unique four character (alpha-numeric) code to identify it. The first two numbers of this code represent the group it is in. (Ie. 15AB and 1502 are both grouped together) The second table stores values that apply to the entire group. I need to create a relationship between these two tables based on the first two characters in the ID field.
Things I've tried:
* Making a calculated field with left$() formula - Access doesn't allow relationships on calculated fields
* Create a new field for just the first two characters and create a data macro for after update and after insert to update that field with the expression - cannot edit the field the user is on
I have a "Main" form called frmProjects that sports multiple tabs. One of those tabs is labelled "Milestones", into which I inserted a datasheet subform called frmSubMilestones. The table that feeds the subform is tblMilestones. I established the parent / child relationship between frmProject and frmSubMilestones, and everything is working just fine...
To summarize: frmProject as main form -> Milestones Tab on main form -> frmSubMilestones as datasheet subform on the Milestones Tab (there are other tabs that are not subforms).
I have been asked, for each milestone in the frmSubMilestones subform's datasheet, to capture the number of days spent by employees on a monthly basis. The Milestones table and the PersonDays table have a primary key and a foreign key that are similar.
To summarize: frmSubMilestones as subform -> txtAggregatePersonDays as calculated Textbox fetching data from tblPersonDays -> OnClick event -> FormLoad of frmPersonDays as datasheet PopUp form.
DoCmd.FormLoad is supplied with the usual parameters to make the PopUp form appear, filtered on the currently highlighted milestone. Everything works fine so far... well almost.
Problem 1: When I introduce new rows in the frmPersonsDays datasheet, everything seems fine at the surface, BUT the primary key of the calling form (i.e. frmSubMilestones) does not appear in the tblPersonDays table; this is normal because there is no form-based parent / child relationship between the two forms. As one might expect, I am trying, from frmPersonDays, to get the primary key value from the "parent" frmSubMilestones using the Forms collection. No dice. I surfed and surfed, tried the bang and the dot operators, drank scotch, but nothing worked. I had to add foreing keys manually in tblPersonDays to further my tests. I can't figure out how to reach any control on the calling form, which is a subform.
Problem 2: The calculated txtAggregatePersonDays on the frmSubMilestones works wonders for existing data in tblPersonDays. However, when I introduce new rows in the PopUp form, I also realized that the calculated Textbox in frmSubMilestones is not updated when I close the frmPersonDays PopUp. I have to close the PopUp form and move the cursor in the Main form (frmProjects) to refresh its associated milestones.
Hi All,
I am new to access and this forum, so hello all.
I am trying to build a database to keep records of my bird sightings. As you might have surmised; I am a birder.
I have come to a holt on creating a complex relationship between the Bird Entry From and the table that contains a list of British birds.
In Bird Entry From two of the fields are for entry of the bird name, one field being the Common Name and the other being the Latin Name. They are both drop down lists that contain all the birds from the table, this being done by import data. The table that holds the bird list has two fields One is called Common Name and the other is called Latin Name, this being the same as the filed names in question in the Bird Entry From
This is where I am coming unstuck. What I would like to happen is that when I enter a bird in the Common Name field (either by typing until the bird is auto entered from the drop down or using the drop down to find the bird) it automatically enters the Latin name in the Latin Name field and visa-versa, but I have become very frustrated with trying to do this.
Am I wasting my time? Or is it possible? And if so would anyone be kind enough to tell me how?
Many thanks,
Simon.
Hi i need help with one of my relationships
I need help with linking Member 1: N Reservations
the entites are
Video (Vcode, VTitle, Date Made, Director, Genre)
Copy (CopyNum, Vcode, Due Date)
Loan (LoanMemNum, CopyNum, Ldate, In, Out)
Member (MemNum, MName, MAddress)
Reservation (VCode, resMemNum, Resdate, CollectDate. Collected Not Collected)
The keys are underlined
Cheers
Hi there!
I've three tables in my database, tblInfo, tblSavedInfo & tblCountry.
for tblInfo I have this fields - Ref: Cost: RefCountry:
for tblSavedInfo I have this fields - Ref: Cost: Country:
for tblcountry I have this fields - RefCountry: Country:
My problem is when I save from tblinfo to tblSavedInfo I want it from RefCountry on tblInfo check wich country is on tblCountry and save on tblSavedRef the country instead the refCountry.
As tblInfo has about 200.000 rows I need something to make it quick. Is there anyone that can help me please.
Thanks
Any advice? I've tried some things and no success with linkage
Rooms Table
RoomID
Room No
Type
Desc
Project Table
Project ID
Project
Desc
Faculty Assignment
Project Grant No
Sponsor
Project End Date
Student Table
Student ID
Students
Many rooms with many projects, many of those projects in many of those room, with many students working on those projects. Many rooms, many projects, many students. Argh...
I've already tried two junctions between rooms and projects // and projects and rooms
What is making this so difficult?
As you all know Im not a expert on databases but work in a volunteer basis in a small community area where we have no money for people to do anything for us.
Im proud because I did the other database and its up and working but this one has got me beat.
Im setting up one for the volunteers, which has computer knowledge, any basic training they need, when they are available and what tasks have been set for them.
I need to have a one form which has just their personal details but to be able to put in data on the other forms and it will link back to the volunteers name.
Ive attached what Ive done and Im sure your all going to laugh - but any help would be appreciated
Barnesy
Trying to set up a fairly simple DB. Here is the layout:
tblRoom(roomID, roomNumber, rackOne, rackTwo, rackThree)
tblStudent(studentID, name)
Each student will be assigned to one, and only one, rack. There will be 3 students to one room. One student can only have one room but a room can have many students... I store studentID in the rackOne, Two and Three fields. My problem is when I try and querry for the information so as to display actual names rather than ID's. I'm not sure If my querry is the problem or if I've set the tables up incorrectly. Any insight is much appreciated.
Hello,
I'm having some problems setting this up right.
I have 3 databases.
Volunteers
FIRST
LAST NAME both primary
Movie Data
MOVIE
DATEboth primary
Attendance
MOVIE
DATE
USHER 1 First
Usher 1 LAST
Hello,
I'm having some problems setting this up right.
I have 3 databases.
Volunteers
FIRST
LAST NAME both primary
Movie Data
MOVIE
DATEboth primary
Attendance
MOVIE
DATE
USHER 1 First
Usher 1 LAST
USHER 2 FIRST
USHER 2 LAST
AUTOKEY PRIMARY
I have a one to many relationship between the movie and date between the attendance and movie data table. I have tried linking the name to the usher fields but I"m not getting the result I want. I want to be able to open up the volunteer table and have it show me the movies they have worked on. The movie data table will list who worked it, but the volunteer tables are not.
Any ideas?
Thanks,
Cody
I have to tbls which have indeterminate relationships and I'm told that ther is no unique index found why is this?
i am using emplyID on both tblCommission and tblSales both are number type.
I might not need the commission table as I'm using this is calculate commission as said im my previous post
at one point in my database I have two tables and for everyone record in one table I may have either 1 or 0 records in the other. How do I express this in access design? Since it's an optional 1 to 1 relationship I guess?
View 1 Replies View RelatedI was wondering if anyone could help me with a query. Basically I am doing (or trying to do) a small database to track childrens progress in my mums primary school. I'm doing this for free as the budget is rubbish for this type of thing and i dont have enough knowledge to ask for payment anyway! I want to get it right from the start and I think if I get the relationships right initially then I can complete the rest of it on my own. I did this at university (normalisation etc) but ive not used it since i left in 2002 and so have practically forgotten everything i ever did.
Basically, the child comes into the school and is predicted a level in maths, reading and writing. Then in the october, feb and july of each of the 2 years they are there, they are given actual assessment levels. They are also given a prediction level at the beginning of year 2.
So far I have one table with student no, surname, first name, gender, ethnicity, year group and SEN(special educational needs) - with the primary key being student no.
This is where I get stuck - do I go for a maths, reading and writing tables and split it that way - or on an assessment basis, so prediction yr1, october yr1, feb yr 1 etc etc. Or is this completely wrong? Am sooooo confused, so any help would be greatly appreciated.
The outcome I want is to be able to query a childs progress, so for example: show children who achieved a 1a in yr1 maths, and then out of those children, who achieved a 2a in y2 maths (as this is the required shift in progress set by government). I really hope that makes sense.
Thanks in advance
Nicola
I'm rebuilding my database from scratch now that I've learned a bit from the forums about developing a proper database and I want to investigate whether I have the relationships set up correctly, as I seem to be using lot of one-to-one relationship, which most articles say is very rare, and whether I am formulating many to many relationship correctly. Here is a screenshot of my relationship.
If I've understood this correctly, one-on-one is desired if you have a subset of data that is applicable to the main table only occasionally and is dependent on the main table's data. Have I used that correctly?
As for many to many relationship, articles say this is formed by having two one to many relationship linked together in a table. In my screenshot, you can see that tblAdvocacyVisit is the linking table. However, I've set GuestID as a one-one relationship whereas ClientID is one to many relationship, reasoning that since I do need to relate the Guestl Logbook data to Advocacy table for some queries I will be performing later, this will save me some work. I'm afraid that this may compromise RI or something like that. I can simply add a PK autonumber to tblAdvocacy to revert the GuestID as a one-many relationship, but can't see how that would not create more work in queries or so...
Oh, are the lookup tables supposed to be related at all?
TIA.
Edit- Updated the relationship screenshot.
I’m building a database of protein mutants we use in the lab. A lot of analysis is done on these proteins by various people and it’s becoming a bit of a nightmare keeping track of all the information per protein. What we need is a database. I’m getting a reasonable grip on it all I think with the excellent examples I have found on the forum but there are obviously areas that I have great difficulty with. The main problem for now is that many-to-many relationships are involved and I just cannot get them to work properly.
On each protein up to 8 different types of test are performed. To keep things easy I’ll call them A1 (for Analysis1), A2, A3 etc. These are done by different people from a group of 7. I’ve called them O1 (Operator1), O2, O3 etc. Each of the operators can do multiple analysis and the operators overlap. So e.g. O1 might be particularly good at A1, A4 and A7, O2 might be good at A2, A4 and A5, and O3 predominantly does A1, A4 and A6. What it comes down to is that each operator can in principle do each of the analysis so I have to give that option in the database.
What does work (but is not the solution as it introduces 8x duplication of data) is if I have a separate table with operators for each analysis. The same tblOperators is linked 8 times. There must be a way to link each of the analyis to only 1 tblOperators, probably with the use of a linking but I just cannot work it out from the examples I've found here.
Can someone help me on my way please?
Thanks,
Walter
New guy on the block here.
I am having trouble associating the relationships within a database to accomplish what I need. I don't know if I am over thinking or I just plain old don't get it. So, I ask if someone can draft this database up rather easily and post it for me or send me in the right direction to learn quickly.
This is what I am looking for: A table with people’s first name, last name, title, job position. That is it. I can do that and have done that. No problems.
Another table that has amplifying data on that person such as: date of birth, SSN, date employed, comments, etc.
What I envision is, creating a form to add the names, title, and job position of the people to the table.
Then I want to create another form that puts the other data associated with that person. This other form should have the first and last name from the first record to "view" only so the correct data can be added to the correct person.
That is it; I hope someone can help me out. I have been working on this for sometime and just can't seem to get it.
Thanks, all, E-dub
Please pardon my inexperience.
I have two tables, call the tblSales and tblCustomers.
tblSales looks like this:
CustID FName LName ...
1 John Doe
2 Jane Doe
1 John Doe
1 John Doe
2 Jane Doe
2 Jane Doe
tblCustomers looks like this:
CustID FName LName
1 John Doe
2 Jane Doe
with CustID being the primary field.
Suppose that no data exists in the FName and LName columns of tblSales. How could I automatically populate those fields with data based on the information in tblCustomers? I would like to be able to simply type in the CustID on tblSales and have the other fields populate automatically.
I'm sure Access can do this, but how do I set it up!?
Thanks!
Hi all,
I have following problem so please help if you can.
I have three tables: Order Demands (from production), Order Demand Details and Orders (for placing by different suppliers).
ORDER DEMANDS
Order Demand No.(ID)
Date
ORDER DEMAND DETAILS
ID
Product
Quantity
Order Demand No.
Finished (checkbox)
ORDERS
Order No. (ID)
Date
Product
Quantity
Relationship between Order Demands and Order Demand Details is one-to-many. I have no relationship between Order Demands and Orders but it should be actually many-to-many relationship.
Following must be possible:
Order demands with specific details come from the production. It can be one item or several items (products) that are demanded. I must be able to place an order for one or more items (products) which are unfinished (not ordered till now) by selecting items. I must also be able to place an order independently from Order Demands for example because not all demands come from production department. After I have placed an order and the ordered products were supplied then I must be able to enter received products (maybe I do not get all ordered items) into Orders form for instance and this should check the field "Finished" in Order Demand Details table so that I know that I have received the products that are demanded from production department.
Do you have any suggestion how to organise relationships between tables.
Thanks for your assistance.