Relationships/primary Key
Jan 22, 2007
I hope you guys can help me out, as 'Step by step Access' and the internet didnt help me out...
I'm about to create a database for monitoring assessment. Several patients will be assessed many a time. The main table will be one with a patientnumer and patient characteristics. For each period in time (T) I'd like to create tables which contain the different tests and dates on which they are administered and processed.
The problem I'm having though, is that the tables T don't have unique values and they need to be related to the patientnumbers.
Should I use autonumbering as primary keys in the tables T to relate to the patientnumber? I'd rather have the patientnumbers automatically appear in the tables T, or at least in the forms to be used by the final users of this database.
I hope this description makes some sense (English is not my primary language)
Can anyone help me out?
View Replies
ADVERTISEMENT
Jan 8, 2008
Hi,
I have a table with a primary key (Sales Number) related to lower table with one to many to Transaction Number
The Transaction Number will contain many products so is related to a table fpr products via one to many.
BUT - also transaction number is also related to another table via a one to many relationship for Invoices for which there could be many.
Now I have set up all relationships and the tables look to be correct.
But how do I get the transaction number to flow down the 2 relationships.
I can only at this stage link either Invoices OR products via the transaction number (prim key).
How can I set it up so that when I update / enter data into the transaction table, the foriegn keys in both INVOICES and PRODUCTS Table?
I need to set this up in a form too?
Can anyone help?
View 1 Replies
View Related
Aug 20, 2013
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?
View 7 Replies
View Related
Jun 6, 2007
I'm having lots of erratic problems with our Access database. Back end tables on the server, front ends on workstations. Running Windows 2000 server, Access 2003 SP2 on Windows XP SP2. I'm not the network administrator so don't have much detail on network. For instance, the back end is 'losing' relationships between tables, with the primary key on the 'one' end of a 'many' relationship disappearing - the relationship link between the tables also disappears. Other errors are:- erratic problems with indexes which are sometimes fixed with a compact / repair, sometimes not- data on forms disappearing- data on forms appearing in the wrong field- queries that ask for parameter input twice when only programmed to so once- sorting orders suddenly going wrong way round - inability delete a record via a form, caused Access to completely crash with Microsofts 'sorry unrecoverable error' message. To fix the query problem, I created a blank query and imported the old one into it, problem solved. But what caused the old query to act weird in the first place?To fix the inability to delete a record problem, I created a whole new blank database and imported everything into it. But what caused the database to repeatedly crash? The suddenly missing relationships I have no cure for. I'm at the end of my tether - can't figure out any pattern to this. Any suggestions? Network errors? Read / write on server? Disk space / fragmentation? Fundamental problem with the database?Any help much appreciated.Sorry if this post should have been in the tables forum.
View 6 Replies
View Related
Sep 15, 2006
I have created a very simple Access database with a CompaniesTbl, ContactsTbl and CallsTbl. The database is used to record telesales contact with customers. The tables are set up like this:
The CompaniesTbl has an AutoNumber Primary Key field called CompanyID.
The ContactsTbl has an AutoNumber Primary Key field called ContactID and a foreign key called CompanyID.
The CallsTbl has an AutoNumber Primary Key field called CallID and foreign key called ContactID.
The relationships are set up in the relationships window and referential integrity imposed.
Twice now, while editing a contact record, an error has occured. Task Manager has had to be used to get out of it. The error is either a 'run-time error with a message that does not mean anything' or it says 'unrecognized database format' (!?).
If you open the database again the ContactID field in the Contacts Table is no longer a Primary Key field. If you look in the relationships window - the relationship between the Companies and Contacts tables no longer exists.
Any ideas much appreciated.
View 5 Replies
View Related
Jul 18, 2005
Hi all. I really need help with this. Does anyone see a problem with my relationships , i have attached a copy.
Any help will be greatly appreciated
ClaireB
View 5 Replies
View Related
Aug 2, 2005
I am new to database design and curious about relationships. In a hypothetical situation, if I have four tables: tblProducts, tblOrders, tblEmployees, and tblCustomers, how could the relationship be set up?
The Products are stored to keep track of the quantity on hand and the employees will also need to be tracked as to how many products they sell. Customers are recorded and Orders wrap up all three tables with the fields: OrderID, ProductID, EmployeeID, and CustomerID.
Would it make sense to say that many products can be bought by many customers and/or many employees can place many orders.
View 10 Replies
View Related
Aug 16, 2005
Hi
I've selected a number of tables to the relationship window. When I drag the primary key on one table to the corresponding foreign key on another table, the link created is one-to-one. I want one-to-many. Why did it create one-to-one? How do I change this to one-to-many?
Thanks
View 4 Replies
View Related
Mar 7, 2006
Hi all. I am new to the use of access and have been told that I need to create a one-to-many relationship to be able to have several records from a drop down list saved to one unique number (my primary key).
Is this correct and if so how do I do this? If it is not correct what is the best way to do what I require?
Thanks for helping.
View 6 Replies
View Related
Mar 16, 2006
Hi
I have created two tables which are linked with a one-to-many relationship
Using a form the user enters a date. Then in VB I add a value to the date and store this in the second table.
I have simplified this to try to find out what was going wrong and found that when the database adds a value to the second table which only has two fields it first of all adds it to the begining of the record set and the id field does not update to that of the first table where the relationship is joined.
Do I just captutre the value of the id field and add this to the recordset.
How to I get the database to look foir the end of record set before I appent the new generated record.
View 4 Replies
View Related
Aug 7, 2006
Hi,
I have looked for this on the help section; however, it does not seem to be covered. How would you change a one-to-many relationship to one-to-one? Access seems to automatically guess that the many side is where the foreign key.
Can it be changed from Access or is entirely on how you design your tables?
Thanks,
Bee
View 5 Replies
View Related
Aug 18, 2006
Hi !!
I am doing a school project on a school database. In my DB I have a table with all students records (eg. Student ID, Name, Surname, DOB, class etc) and I have another table where the student fees payment slips will be printed.
The fee table will only have the ID, name, surname and class fields and fee will be input for every student for every term.
I want the fee table to get all the info except the fee from the first table automatically when I give a student ID.
I have created a one to many with only Student ID fields linked, NOTHING.
Then I tried to link many fields on each side (eg Name to Name, Surname to Surname etc) but I got a msg "No unique index found for the referenced field in the primary table"
Plz help me !!
Thanks
View 1 Replies
View Related
Oct 10, 2006
would having a db with several tables and NOT setting any relationships up in the relationships window affect the db in any way?
i have such a db, which originally had all the relationships set etc. however, as i encountered errors and had to replace tables and delete entries, i must have at some point deleted all the relationships.
i just relaised that the db now has no relatioships set up (all the primary keys are still in the tables) so i'm wondering if this matters?
cheers
Jose
View 3 Replies
View Related
Nov 9, 2006
I'm trying to define relationships between a few tables in Access 2003 and It's only doing a one to one. How do I get it to do a one to many?
View 5 Replies
View Related
Nov 23, 2006
Please someone help! This is very urgent!
I am designing a database for a clinic
basically,
One Form is a Demographic Form, which was been designed. Each person was given an identifier code.
However, they all did 3 questionnaires. Each one of them has their ID code on it.
Is it possible for me to make a query so that when I search ID code, it actually brings up all the information on every questionnaire?
View 8 Replies
View Related
Jan 1, 2007
If I have a table "tblContinents" with just two fields ContinentID and Continent and I have another table called "tblCountries" with three fields CountryID, Country and Continent.
After reading several articles, i decided not to make the Continent field in the tblCountries as a lookup field but rather I will do that at form level via a combo box. In such situation, since i am not creating a lookup field at table level, do you think that it is necessary to create the relationship between the two tables in the "relationship window", or shall i just leave it as it is, and if the need arises i will create such "relationships" in queries?
Thanks very much.
View 3 Replies
View Related
Jun 19, 2007
hi, im new here and i dont really know much about databases with access. im currently doing an assignment at school requiring me to do a entity relationship diagram for all my tables, which i do not know how to do. Can anyone please assist me asap? thank you very much in advance
below is the link where i uploaded it because it was too big to be uploaded onto this post. :)
http://www.megaupload.com/?d=E6AU28CL
View 4 Replies
View Related
Jul 4, 2007
In my Db I have TblQuotes & TblQuoteItems
I want the one-to-many relationship to be based on my own generated quote reference rather than the PK/FK.
My quote reference looks something like this IN123/10
Does the character '/' cause a problem with creating the relationship as I get the error message "No unique index found" even though I know that they exist?
Thanks
View 6 Replies
View Related
Aug 10, 2007
When I view the relationships window, not one of the relationship connector lines (whatever the technical term is) do not show up! I click view all relationships, view direct relationships. I restarted my computer, restarted Access. Nothing!
I know I have relationships because when I am table design view I try to change something that I know has a relationship and it doesn't let me because it says I have a relationship.
What is going on!?:mad:
View 4 Replies
View Related
Jan 31, 2008
Hello..
Here is what I have. The database is made up of three tables (see below and see attachment). I have it set as one event to many ethnicity's and many personnel with the event ID as the PK in all three. Did I do this correctly? I thought I did and I had a form with each one of these running correclty but now it is not working.
tblEvent
EventID(PK)
tbleventEthnicity
EventID (FK)
tblPersonnel
EventID(FK)
See attachment for the other fields.
Can someone just check to see if I set this up correctly or what I should do differently?
Thanks
View 14 Replies
View Related
Nov 2, 2004
I have already made a relationship 1 to many, i want to add another relationship. I put the name of the feilds i want to join up in the drop down box. I put "enforce in..." and "Casgade update related fields" on and join type 2. Then when i press ok, it comes up with "file title " to "film title" and comes up with "no unique index found with the referenced field of the primarytable".
Does anyone know what this meens?
View 1 Replies
View Related
Nov 22, 2004
I am writing a access database for work(fire dept). It is a database for the vehicle checks. Most of the fields are Boolean fields we just need to know if the inventory is on the unit. I am kind of new to this. My tables so far are as follows:
TCardiacMonitors
TFirstInBags
TGlucometerKits
TIntubationKits
TUnitNumbers
TCompartmentNumberOne
thru
TCompartmentNumberEight
TSealNumbers
TEngineChecks
all list the inventory that is supposed to be in that table
Everything is dependant on the Vehicle it is on so my question is Do I relate everything to a look up field in TUnitNumbers(intUnitNumberID) or is there a better way to do this? I need to relate everything to the date it was checked
Thank you for your help Bill
View 14 Replies
View Related
Jan 7, 2005
OK. I'm not real sure how close I am on this. I have a feeling I'm not too close so I was hoping I could get some help. I have a database with 11 tables. These can be seen in the screen capture attached. For the 'Action Taken' table there are 10 fields for 'Departments Involved', 15 fields for 'Memo Sent To', and 15 fields for 'Job Title'. The 'Departments' table is linked to 'Departments Involved1', the 'Memo Sent To' table is linked to 'Memo Sent To1', and the 'Job Title' table is linked to 'Job Title1'. All the other tables are showing the fields that are in that table. When I enter a record and try to go to a new record it gives me the following error message.
"You cannot add or change a record because a related record is required
in table "Background Information'."
I'm not sure what to do about this. I'm sure there is a simple solution but I don't know what it is. I am pretty new to Access (this is my third week on the job) and a little confused on some things. I would appreciate any help you could provide.
View 2 Replies
View Related
Feb 21, 2005
Hello. I'm new to databases and anything I know I've read up on. I know that relationships are essential so I'm trying to sort a database in ms access that I have inherited at work. It contains health service staff and their record of training - various training that they do regularly. I've managed to put the data in 1nf but am having difficulty after that.
A couple of questions:
If I give each staff member a unique id do I need to link their job title to it? Job titles chang quite a lot.
Other information about courses, dates of training, trainers etc. - should they be linked to staff name via separate tables?
I'm using a spreadsheet example from microsoft that shows me how to go from raw data to 3nf but I'm not sure how to split the information, so if you have any suggestions or know any good guides I'd be grateful for your help.
Thanks.
View 6 Replies
View Related
Feb 23, 2005
I have 2 tables. tblcontact and tblboat.
tblcontact
CustomerID-PK
Customer
Contact
tblboat
CustomerID-FK
boat
Serial
i have made a form to enter the data, all works ok. I built a form to search by customer and it works fine. I can not find a way to build a form to search by boat name or serial. Can some one please help?
Thanks in advance!
Tim
View 2 Replies
View Related
Mar 1, 2005
Hello. I posted a while ago on a database I'm working on. Still having trouble with relations. These are the fields in 1nf:
FNAME
LNAME
JOB_TITLE
BASE
DEPT_WARD
COURSE
DATE(S)_ATTENDED_COURSE
COURSE_TRAINER(S)
COURSE_VENUE
CERTIFICATE_ISSUED
The database keeps a record of various training courses for health service staff. From answers to previous posts I figure I need:
TBSTAFF
STAFF_ID
FNAME
LNAME
JOB_TITLE
TBCOURSE
COURSE_ID
COURSE
TBTRAINING_DONE
STAFF_ID
COURSE_ID
DATE_TRAINED
TRAINED_BY
CERT_ISSUED
I think that's ok but it's when I try to link them I get into trouble. Assuming the above is correct do I have:
TBSTAFF linked by STAFF_ID to TBCOURSE-COURSE_ID
TBSTAFF linked by STAFF_ID to TBTRAINING_DONE-COURSE_ID
I'm not sure how base and dep/ward work either. I need to know a person's base and dept e.g. hospital x, ward y.
Thanks.
View 3 Replies
View Related
