I am quite new to creating dbs in Access but I am not a fan of subforms, I can already tell that much, they are nice for one to many relationships (one customer, many orders) but when I just want to reduce redundancy and create a one to one relationship between tables and I only at all times would need one record from another table, subforms no longer feel so nice.
My example:
I have 2 tables, 1 for companies (ID, company name, country ID) and one for countries (country ID, name of the country). To eliminate repetition of country names I use country ID to link the 2 tables, and only add the ID of the country, not its name.
When I create a form for the "companies" table I want one field that says where that company is located instead of a subform (because I still havent figured out how to hide the box around it), so practically having one field that's connected to a different table.
And then through the one to one connection, when a record is selected the form would show in one field where the company is located. Is this possible?
Extra: I have 2 countries in my "country" table, the UK and Germany, but a new company I am adding a record from this form, is located in France, is it possible that I just enter France into the field and it automatically creates a new record in the "country" table for France, and also adds the new record's ID to the "company" table, to the company that's located in France
It seems your form and subform are based directly on tables. Try basing your main form on a query:
SELECT
company.ID,
company.CompanyName,
company.CountryID,
country.CountryName
FROM
company
INNER JOIN country ON
company.CountryID = country.CountryID
This will eliminate the need for a subform.
Extra: You may actually want to have the 'country creation' function on a separate form, or invoked from a button push on this main form.
Having Country IDs to force users to pick a standard country from a list is a very good idea. However if you also let them arbitrarily enter new ones in the same box you're trying to prevent them from mistyping in, that good work can come undone.
Yes this is absolutely possible. The way I do this is with unbound forms, so I control all of the SQL statements to tell the data what to do and where to go.
Since you have 3 fields being sent into a row in the "companies" table and 2 fields being sent into a row in the countries table with 1 of the fields being in a relationship (I'm assuming 1 to many), create 4 textboxes (or whatever other control) on your form. The controls will be for: ID (assuming this is inputted by the user and not an autonumber. If it is, please comment below), company name, country ID, name of country. When you fill all of them out, have a button with a Click event. In here you will have 2 SQL statements to insert records, 1 for each table.
The code will look like this:
Private Sub button_Click()
DoCmd.RunSQL "INSERT INTO companies VALUES ([ID].Value, [company name].Value, [country ID].Value)"
' The words in the [] are the names of your controls on the form
DoCmd.RunSQL "INSERT INTO country VALUES ([country ID].value, [country name].value)"
End Sub
Related
I have two tables. The first one is the list of my customers with their auto-generated ID, their name and their status in my DB. The second table is the list of my customers' phone numbers and whether it is a mobile or landline. One customer can have many phone numbers, that is why I keep in every record in table2 the CustomerID.
I want to create a form that allows me to add a new customer to my list, and in a separate form, add one or more phone numbers ACCORDING to the CustomerID I've just add. In the future I will have many more tables like Customer_Phones_List also linked to Customers_List so I'm not sure if a subform is the best option.
How do I do that in MS Access ?
Build form/subform(s) arrangement. Can use a tab control for multiple subforms to conserve screen space. Each page of tab control can have a subform that is linked to data on main form.
I'm struggling with a problem which I can't work out is due to a logical error, a design error or both. Or maybe it's something else entirely.
I have created a simple customer services database and form based user-interface for my company. When a user answers the phone they are supposed to log the call in the system if it is an issue relating to a product.
Sometimes a chain of stores which we have a special relationship with calls up on behalf of customers and we take their reference number and give them ours. This system actually works pretty well if I may say so myself (!), but I noticed after a while that when this store calls up and gives us their number, when they are logged into the system their branch number/name is not updated in the table record.
Here is a summarised outline of the relevant database tables. I renamed the store to SpecialStore:
Issues
IssueReference
ProductID
CustomerID
SpecialStoreBranch
Customers
...
Products
...
SpecialStore
SS_ID
City
Address
The idea is that even if it is either a customer or the store with their own IDs, the products are still stored in the same Products table, just with either the CustomerID or SS_ID filled in. Then when issues are logged, the store or customer is set and logged against a product.
In my main form I have a variety of boxes for a new issue to be filled in. There are combo boxes to select the CustomerID, ProductID etc, and of course the SpecialStoreBranch. These are all bound to the table, and the combo boxes all have row sources relating to their particular table. E.g. CustomerID combo box is a list of the IDs in the Customers table. (This is filtered to the required one elsewhere in the form.)
The Issues table SpecialStoreBranch field has the following query as its Row Source:
SELECT SpecialStore.[SS_ID], [SpecialStore].[City] FROM SpecialStore;
This is the same row source for the combo box on my main form.
The Column Count is 2, with the Bound Column as 0 and the column widths, if necessary, are 1cm;2.544cm.
My main form combo box SpecialStoreBranch has the other attributes:
Limit to List = yes
Allow Value List Edits = no
Inherit Value List = yes
Show Only Row Source Values = no
On the form the CustomerID and ProductID store correctly when the record is saved, and they are also from combo boxes. The form refreshes to update those fields when another part of the form (adding new customers and products) is changed. Could this be why the SpecialStoreBranch does not update? What am I missing? Is there a way to test this? I have been trying to run user tests to see if it ever works, but all I know is that it doesn't always set. If I have forgotten a piece of information let me know.
Edit:
Looking here: BoundColumn-Propery, I'm not sure if setting the bound column to 0 is doing what I think it's doing. But even then it should still use that id number to input into the table I would have thought and if they are all the same, what does it matter. When I tried setting it to 1, it took the text value in the table. Confusing!
I have the following 3 tables:
Retailers - ID, Name
Registration - ID, Status (YES/NO)
Refund - ID (populated into a dropdown list from Retailers table), Name (Empty), Status (Empty)
Retailers is a table full of data, while Refund starts off as an empty table that gets filled in as a Refund Form is filled up. After creating a form based on the Refund table, how do I allow a user to select an ID from the dropdown list and populate the corresponding Name into the Name field and Status into the Status field?
What are the queries needed and how do I integrate this into the form?
I have tried the method found here - https://www.linkedin.com/pulse/autofill-form-microsoft-access-tim-miles
However, I have run into 2 problems:
1) The form does not appear in "Form View"; it is only viewable in layout view. I have read many links saying that the queries are read-only or that there are no records in the first place etc. The answers don't make sense.
2) If I bind the form (instead of a table) to a query this way, how do I save this new data into another table? My intention was to have the record saved in Refund table.
Sounds like Refund is your base table here. So, the query you want is:
SELECT a.[ID], b.[Name], c.[Status]
FROM Refund as a
Left Join Retailers as b
ON a.[ID] = b.[ID}
Left Join Registration as c
ON a.[ID] = c.[ID]
You'll need to make all 3 ID fields the Primary Keys in their respective tables. This should make the query updateable, and then you can use this query as the DatSource for your form.
You also have to make sure you set up the Relationships for all the tables. If you've never done it, it's easy to do and Microsoft gives you instructions here:
https://support.office.com/en-us/article/Create-a-relationship-40c998dd-4875-4da4-98c8-8ac8f109b85b
By setting up referential integrity in the relationships, you can save the data.
I am using Oracle with Oracle Forms builder (Middleware) both 11gR2. I am creating a system for purchasing records. I have the following 2 tables.
(a) product (master) : prodid(PK), prodname ...... etc.
(b) purchase (detail) : prodid(FK), quantity, ...... etc.
My plan: All the product details will be in the product table. purchase table will be used only to input purchase information. This table can't input any new product. If any new name, that info will have to be input into product table first. This way I can reduce duplicate names.
Now I am having difficulties relating to prodname (name of the product) column in the form.
I created forms using the purchase table only. This table does not have the prodname (because I put this field in product table) column. But during data entry, they need to see the product name !
So I created text item (tabular, database - no). Then I created LOV, attached to text item, input the prodid in prodid field in the form. LOV part is fine.
I run the form. click the text item, LOV appears, select a name, click OK. product name, product id, etc. appears in their fields as it should be. LOV is working fine. Now I can only input data but having difficulties updating. I mean if I input a name (LOV) in the text item, press execute query, shows records from the database but names in the text item disappear. Since the name is not here, it's not comfortable to update.
I think LOV is not the good idea here. May be I need to use PL/SQL in a trigger somewhere.
But I could not figure it out. I searched google but no luck. Is there anyone who can give me any idea or some example code/trigger please.
Since the product name is an non-database item, when execute query runs, the field is cleared and since no column is assigned to that field, it doesn't repopulate.
The usual way to populate this field is to have a function which returns the product name based on the id that is pressed and call the funtion in POST-QUERY trigger.
Basically it's a pretty simple task but I was having difficulties due to the lack of my experience. However, what I have done is -
create the text item (name : product_name) in the canvas
set properties for the product_name (database : No, .... etc as needed).
Create a block level POST-QUERY trigger and write the PL/SQL block to populate the field. For example, I wrote the following.
BEGIN
SELECT prodname INTO :purchase.product_name
FROM product WHERE product.prodid = :purchase.prodid ;
END ;
That's it and when perform execute_query in the form, it will bring the product name from another table. - Query problem is solved.
Now create an LOV using product table to bring the product name and product id.
Associate this LOV to the product_name text item. So whenever you need to input information about a purchase, just use the LOV to populate the product name field. And then input the subsequent fields as well.
This way both of my issues (query and data entry) are resolved.
I did this according to the suggestions given by Sathya and a video (6 minutes) from the youtube at https://www.youtube.com/watch?v=0nqldnGt8KA.
Thanks to Sathya and youtube.
i have two tables
student(studentid, name, class)
Course (courseID, CourseName, CreditHours)
these tables have many to many relation ship so i created a third table
student_course(studentID,CourseID)
Now i have designed the forms in ms access through which user enters data in student and course tables
But i want to design a from through which user can assign courses to students which means user
have to enter data in student_course table.
but i want to design a form though which users can see and enter the student name and course name insted of ID's at backend ID should store in student_course table,
Can anyone help me in this matter.
You can use a combo box .. try to insert a combo box on the form using the wizard and it should walk you through the steps in showing the course name in the front end and saving the course id in the back end database ...