New Data, But Keep Relationships
Mar 19, 2008
You know the scenario where people keep working in an old version of a database, while you work on an update... leaving you with a new database, but old data?
This concerns a database, containing about 20-25 tables all linked together.
I was asked to make an update. In this update 3 new tables were included and here and there a few of the old tables got news fields, nothing crucial and a lot of forms were changed.
The current situation:
Database 1: contains new data, misses a few tables, is missing some fields, forms and queries
Database 1.1: contains old data, but some new extra tables, added fields, forms and queries
I would like to know if it is possible to import all data from 'database 1' into 'database 1.1', so that all linked information between the data is preserved, all database relations are maintained.
If I import tables from Database 1 into database 1.1, tables just get added, not replaced. If I delete or rename tables, I loose my relationships.
I would like to know what is a common and effective way to get all the new data of an old version of a database (where people keep working in while you work on an update), into the new version of the database, that currently contains old data.
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Jan 31, 2006
Hi everyone,
I have a relationship between Market data table and Trade table which is One to Many. Market on the One and Trade on the Many.
However I just found out that I am unable to enter information into the Trade Form without entering information into the Market Form first.
I would like to enter info. into Trade Form/tables independent of whether I enter info. into the Market Form/table, but I still need to have the relationship of One Market data to Many Trade date.
Thanks
dfuas
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Aug 20, 2007
I have 2 excel sheets that I have imported as external data. I created a relationship between the 2 tables on part# field that is common to both. The relationship is to take all info from A table and only those from B table that match. The part# field is set to text in both tables. When I run a report that merges the 2 together a significant # of parts in my field change to a negative number. For instance the part# in both tables are 12345678 it is changed to a random -3452345 number..
Any ideas?
Please help
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May 31, 2005
Hi, I want to create an access app that will allow a user to see the number of pages printed by various printers.
These are the data that I have:
Model Type (various are available)
Printer's name (unique to one printer)
IP addr (unique to printer)
Quantity printed (such as Single Legal, Double Legal, Single Letter,etc)
This is what I have (2 tabels with 1-many relationship):
Printers
PrinterID
Model
Name
IP
ModelTypes
ModelID
Model
Now, where do I place the quanties of paper printed? Do I just leave it in Printers?
Thanks.
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Nov 22, 2006
Hi All
I've worked with Access in the past but haven't touched it for 6 years now so I've forgot a lot of the things i've learnt. Bare with me while I try and explain it as clearly as possible
I'm creating a Database for work which will register all our Commerical Clients, which projects the clients are related to and which students worked on them projects. So I have 3 main Tables:
1.Commercial Clients
Client ID
Company Name
Contact
Title
2. Commercial Projects
Project ID
Nature of Project (Graphic Design, Multimedia, Media)
Project Name
Project Information
Staff Member Responsible
Start Date
End Date
3. Students/Graduates
Student ID
Student Name
Area of Expertise
Contact Details
Last Project worked on
Right here we go.....
Each commercial Client can have more then one project to their name. Each Project can have more than one student working on it and each student can be working on more then one project.
My relationships are set up like this:
Commercial Clients <One to Many> Projects
Projects <Many to Many>Students
What I have done is create forms with sub forms in to enter to extra data. I dont know if this is the right way to do it but it seems to easiest way. Please show me a way that will work better if you know it.
Anyway... the way the tables are now I can on cascade the information down through the tables.... it will not cascade upwards. I have ticked everything you can possibly tick for all relationships. So when I can enter projects in the Subform on the Commerical Clients Form and I can enter students on the subform in the Projects form. But on the Student form the projects the students at on does not show up in that subform and entering the day only tries duplicating it (which i dont want to do). If I had a form that showed the projects and the related commercial clients in the subform it wont find the commerical clients. So i.e.
It shows fields when the cascaded down like:
Commercial Clients
V
V
Projects
V
V
Students/Graduates
But it wont show if its:
Commercial Clients
^
^
Projects
^
^
Students/Graduates
Anyone have any ideas how I get get them to cascade upwards?
Thanks
Pete
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Aug 15, 2006
K,
Maybe a noob question, but I'm still learning access (I know a little late at the age of 37, but better late then never).
I have a form with several tabs, linked to a table with employee information, works like a charm.
Now, my last tab is called settings, maybe no need to say that the information from this tab needs to be called from a different table called settings.
Certain information, like version number, department, etc I want to display all the time in the header and I want to be able to manipulate that information through the settings tab.
I definately don't want any relationships with the employee table.
Is there a simple way to achieve this, I tried drag and drop but this leads to errors, so definately I do something wrong here.
Much appreciated,
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Aug 26, 2014
My problem is displaying data in many-to-many relationships.
There are three main tables: tblShops, tblOwners and tblMarketingEvents.
These are linked through two junction tables creating two many-to-many relationships:
1) Each Shop may have more than one Owner and each Owner may have more than one Shop.
2) Each Marketing Event may reach more than one Owner and each Owner may be reached by more than one Event.
Now I want to display for each Marketing Event:
1) the data of that event, (tblMarketingEvents)
2) plus the owners reached in that event, (tblOwners)
3) plus all the shops owned by the owners reached in that event. (tblShops)
Preferably, I want to display more than one record at a time without repeating any information.
Is there a way to display the data like this?
I tried a query: it gives the right data but does not display it as I need. It repeats the data from tblMarketingEvents and tblOwners for each shop.
I tried a form with subform: it can only display one record at a time and is hard to work with (printing etc)
I tried a report with grouping levels based on the query: Again, right information, wrong display. I need to group according to the records of the MarketingEvents table and not just according to a single field.
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Jun 4, 2013
I have created a form with two subforms. The context of this is a litigation database. The main form is for testimony. Among other things, it includes a field for a question and an answer. Any given piece of testimony may relate to one or more documents, and any document may be referenced in one or more pieces of testimony. So have two subforms, one for documents produced by the Plaintiff, and one for documents produced by the Defendant. It worked out easier that way because I originally created indices of those documents in separate Excel tables which I then imported to Access.
So the relationship for both document tables relative to the testimony table is many to many, which is established using two junction tables.
I also have a combo box in each subform where I can autofill fields based on selection of the document number.
My problem is that while the combo-box works great, once I select a document in the subform, that selection is carried over into the next entry of the master form, but also the selection is not retained in any of the master forms. So I can browse the document listing from any entry in the master form, but I can't get the document selection in the subform to stick and create a lasting relationship to a given record in the master form.
Is my problem that it is just impossible to have a subform based on a many to many relationship, or is it in the parent child relationship of the form and subform, or is it in the properties of the subform?
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Aug 5, 2013
I'm building a database about languages and the segments (sounds) they contain. So far it's a many-to-many relationship between languages and segments, and I've set it up as follows.
tblLangInfo: LangID (PK), language name, language family, etc.
tblSegments: SegmentID (PK), Segment -- this table has only one field, with 24 records, each one a type of sound I'm interested in
tblSegmentLangJoin: LangID (PK), SegmentID(PK)
I have another table, tblProcesses, with an (exhaustive for my purposes) list of the "processes" (a linguistic term) a language might have, which also has a many-to-many relationship with tblLangInfo. Thus two more tables:
tblProcesses: ProcessID (PK), Process name
tblProcessLangJoin: LangID (PK), ProcessID (PK)
Here's the fun part...
I'm interested in documenting which segments can participate in which processes, as either a trigger or target. I think this necessitates yet another table, tblProcessParts, with an exhaustive list of the decomposed processes, by which I mean:
Process1_triggers
Process1_targets
Process2_triggers
...
This table is thus also two fields, ProcessPartID (PK) and ProcessName_trigger/target.
The relationship I need to capture is: *given* a language, relate each segment to 0 or more ProcessParts. This relationship is many-to-many, and this on top of the other many-to-many relationships described above.
E.g., "t" in Lang1 might be a trigger and a target for Process1, but "t" in Lang2 might be just a trigger for Process1, while "t" in Lang3 might be neither a trigger nor a target for Process1 (though Lang3 does have Process1), and finally "t" might be neither a trigger nor a target for Process 1 in Lang4 because Lang4 doesn't have Process1, etc.
I've attached a picture to illustrate the relationship I need, since that's likely clearer.
One possibility I thought of was to change tblLangSegmentJoin to have a third field that is the primary key (LangSegID), and relate that to the ProcessPartID table. How to appropriately define my data tables and relationships.
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Feb 19, 2014
I have a DB setup with users and their information. How can I remove a user from the DB without losing their data?
Basically I just don't want the users seeing this (deleted) user in the list on a form. So maybe "hide" is a better term than delete.
Details:
Access 2010
Table "Employees" - holds username and some other user specific info.
Table "Hours" - holds username related data(how many hours they worked on specific dates).
Form "WorkHourEntry" - The form I use to allow the users to login and enter their data(hours).
Then have a combo box that displays all the users in a list. This list/combo box is where I want to hide users from when the employee leaves the company or dept. and is no longer needed. But, we need to keep their history/data.
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Jul 21, 2007
I'm attempting to normalize an enormous table with order data, but I'm running into some problems. The table currently contains many duplicates, of which also included the actual order information (yikes!), but I managed to normalize it almost all the way down. It appears that different accounts can be used on orders, and these order numbers are being recycled for some reason months down the line (don't ask my why they're reusing them for future orders because I have no idea either, they should be creating new order numbers). Of course, the Order number is the primary key in my table as it should be. I guess the same thing can occur with the sales rep. Anyway, I'm struggling to find the "best practice way" to deal with this situation. I'm almost tempted to create an intermediary "transaction table" or something like that between the main general order information (which at this point will basically be the Order Number and Customer ID only), then include a table with the account information and sales rep info, then have that link to the Order Detail with the products, quantity, order number and various dates for those order numbers. Order maybe it should be a separate, related table, but not between the general order information and the order details? Can anyone tell me if I'm on the right track for this situation? It was a total curveball that the rep and account information could be different on these orders.
Option 1:
Order (Order #, Customer) -> Transaction Information (Order #, Account Type, Sales Person) -> Order Details (dates, products, quantities, etc)
Option 2:
Order (Order #, Customer)---> Transaction Information (Order #, Account
| Type, Sales Person)
|
|-> Order Details (dates, products, quantities, etc)
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May 3, 2013
I am a novice to access. I am building a database in an effort to learn in the process. I wished to enquire about the possible issues that could be with defining the relationships that i have created in the project. (attached img).
I cannot seem to define a form based on these relationships to input the data.
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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
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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.
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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
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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.
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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.
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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
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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
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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
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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?
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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?
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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.
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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
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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
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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:
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