After designing the database that mean after creating all the tables and when pressed on relations buttuon it shows a diagram with relations established. Is this a kind of ERD. in this it shows relations between entities so can we call that an ERD?
View RepliesHi,
Im very new to sql so please excuse my ignorance, I ve been trying to do this for a while and not getting anywhere:
I have a table that has customer and product data in it. Its super market data.
I have a field that has customer education level (education), this holds text, (bachelors degree, graduate degree, high school degree, partial college, partial high school)
and a field low_fat which is boolean (0 or -1), wether the product purchased was low fat or not.
Im interested in the realtionship between education level and number of low_fat products purchased.
I'd like a resultset that counts the number of low_fat products purchased for each category of degree level. Something that looks like this
EDUCATION Low_fat_Count
bachelors degree 500
graduate degree 234
high school degree 124
partial college 333
partial high school 124
Is this possible?
So far I've come up with this:
SELECT education, COUNT(*)
FROM AllTablesMerged
WHERE low_fat=-1
GROUP BY education;
but access asks me for specify parameters for education and low_fat.
Thanks in advance for any help on this!
Can anyone give me a direction for the following problem please :
I would like to create a yearcalendar that might do the following job for me:
I have 12 firms with different amounts of people working for them. We need to see those people once a year and give every firm an amount of days that they can come see us. Every firm may send 5 people each day but we can see up to two firms per day. So we receive 10 people on a daily base but only a max of 5 belonging to one firm.
I would like to have a means of automaticaly according dates to those firms over a period of one year but I must be able to exclude or instance, week-ends, holidays and so on...
I hope you can give me a start because I realy don't know where to begin
Hello all,
I need help with making a query this will check the OrdQty for all items in a specific order against the Sup1inv field, then if supplier 1 can not fill the order have it check against Sup2inv field.
Here is an example of the data im working with
Order# Item# OrdQty Sup1Inv Sup2inv
555 widget1 2 1 3
555 widget2 1 1 4
556 widget3 1 3 0
557 widget1 7 1 3
The part i am having trouble with is making sure the query "understands" that both items on order 555 are the same order so the end result would tell me that order 555 needs to be placed at supplier 2, not 1.
Thanks in advance for the help,
Eddie
There are total three tables tblInternal, tblExternal, tblCourses. Table
tblInternal and tblCourses is one to many relationship by reference foreign
key InternalID from tblCourses to tblInternal. If I just use these two table
to set up Master form and subform in ACCESS, you can in subform Field Linker
window of subform property Data tab select primary and foreign key to
generate link between Master and subform. So if you select user name from
tblInternal in Master form ComboBox, you can see the detailed information the
user relates to.
Same relation between tblExternal and tblCourses.
Now I want to merger tblInternal, tblExternal to list user name in ComboBox
by Union statement. But in SubForm Field Linked window I just see one primary
key from one of these two tables instead of two primary keys from each table.
How to solve this issue?
Hi there,
I have built a Access solution for a music school, It was installed on 3 machines.
I'd like to protect my database from installing onto another machine without my permission.
I did install database as a mde file so they cannot see my codes. However, if they copy the database to another machine (esp. another machine in different school) they can use my software without my permission. How can I prevent this? If they copy the mde file into unauthorized machine, database should work as a demo version (such as limiting the number of records in tables to 10). How can I do this? What should I check, hd id, mainboard serial or what? Is there any ready solution (at least modifiable) for that kind of problem?
regards
(see sig for details on what I'm capable of before you toss code at me ;P )
Here's my current setup:
Table1(Assignments)
Instructor <related to Instructor table, pulls data from there)
Academic Year
Fallcourse# (where # = 1, 2, 3, 4), (course pulled from Courses table)
Fallcourse#comp
Fallcourse#notes
Wintercourse#
Wintercourse#comp
Wintercourse#notes
Springcourse#
Springcourse#comp
Springcourse#notes
Table2(Courses)
Coursename (unique)
Coursetype (required, elective)
Courselevel (ugrad, grad, MAS)
Table3(Instructors)
lastname
firstname
empID
rank
The purpose of the database is to assign courses to various professors and append supplementary compensation and, if necessary, notes to each course assignment. Each professor can be assigned up to 4 courses (or something to take the place of a course) per quarter.
My problem. I have created a quite a few reports with this setup including an academic year schedule, compensation reports for the year, sabatical / course release listings, etc. I am having trouble with what I am hoping to be my final report.
Requirements for the final report:
List of all courses for an academic year (filter by year)
group by level (easy)
group by type (easy)
append instructor's name to the end
Report/Relationship Problem:
I can't seem to set the relationship to allow more than one field's data into the report. I can only show courses from the [Fallcourse1] because I can't relate multiple fields from the "Assisgnments" table to one field in the "Courses" table. Effectively, that's what I want to do, but my mind's burnt and can't seem to figure it out.
Maybe you guys could help me out? Suggestions, questions - all welcomed.
hey,
Sorry to open with a question but its usually the way, i'm quite an experienced computer user but never used any office products before and just thought i should learn as i'm losing money every week by not keep track of things properly.
So then to my question..
I've made a table to cover all the orders i have had placed, this includes a date column for when that order was placed. I just wondered if it would be possible to have some kind of system where after 7 days without any acknowledgement from me it either pops up or turns red or something similiar. I'm thinking the acknowledgement could be the yes/no box and i tick that when i recieve the item back, if i dont it either pops up or turns red or something :confused:
any help much appreciated
Hi,
I've split a database and the backend relationships are still intact but the front end they are not and it looks like this is causing a problem. Is this usual?
How do I make the reports show in relations?
I'm (as said before) totally new to everything that has to do with programming, and therefore I work in the visual way, and thus I need to have the reports shown in relations in order to work with it...
Any ideas?
Hi there,
I'm a bit stuck on this but it should be pretty easy.
Say I have a table secondHandCar - this contains infromation on the makeID (eg 123), price, number of doors. Now each car can have a number of images, this number isn't set so I have an images table...
tbl_secondHandCar
makeID - key
price
number of doors
tbl_images
makeID - key
Image (ole, binary whatever)
Now clearly I have a problem: the images table is going to have many makeIDs with different images. I've just got stuck here - do I need an image id or something? But then my make ID will still repeat in tbl_images.
Thanks for the help :rolleyes:
Hi,
I'm trying to build a mdb which holds customer details, which insurance they have, who sold them this and which Insurance company provided this.
The relations I have to make are driving me nuts !
When I try to enter a new customer in a Form, there is a advisor added, the package the customer wants is added. But this shouldn't happen for the advisor and the package allready exists !
Who can help me with the proper relations ?
Attached is screendump of the current relations.
Thanks a lot !
I have a DB and for some reason queries aren't working properly. My guess is the table relationships I made. If anyone else has an idea on changing my relationships so that all forms and queries will work to thier full potential please give my DB a look.
Any Help will be greatly Appreciated
18338
Hi,
I am creating some table for a database I want to use.
I had the following tables:
[Organisation]
orgOrganisationID (primary key)
orgName
orgPostalcode
orgStreet
orgCity
orgCountry
[Contacts]
coContactID (primary key)
coSurename
coFirstname
coFysicPostalcode
coFysicStreet
coFysicAdditions
coPostPostalcode
coPostStreet
coPostAdditions
coTel
coFax
coEmail
[Postalcodes]
poPostalcode (primary key)
poPostalCity
poPostalCountry
I have two postalcodes in the Contacts table. I can't create two one-on-many relations from the Postalcodecodes table to the Contacts table.
So I thougt I split up the contacts table and create a one-on-one relationship between the two new tables.
So it would look like this:
ContactsGeneral
cgGeneralContactID (primary key, autonumbering)
cgSurename
cgFirstname
cgFysicPostalcode
cgFysicStreet
cgFysicAdditions
cgTel
cgFax
cgEmail
ContactsPost
cpPostContactsID (primary key, numeric)
cpPostPostalcode
cpPostStreet
cpPostAdditions
I would create a one-on-one relationship between coGeneralContactID and coPostContactsID. And now I can create my one-on-many relationships between from the Postalcodes table.
1) Is this clever?
2) Should both these fields have a key?
3) I set coGeneralContactID to autonumbering and coPostContactsID to numeric. is this also correct.
4) I also use prefixes before the fieldnames 'cp-' for 'ContactsPost' is this naming convention ok? I think it makes programming easier. But are there condingstandards for that in Access/VBA?
Thanks,
Jayke
Access user,
:confused:
I am looking how to generate a relation in one database between records of the same field type.
f.i. you have a database where you try to keep track of your parts.
You order a part1 but they deliver an identical part but from another brand so it has another part number.
You will store it under his correct partnumber being part2.
Due to the fact you still have stock of part1 and just recieved part2, now you will run out of stock when part1 + part2 reach zero stock.
In order to be able to monitor this you must be able to generate a relation between part1 and part2 showing that that parts are fully interchangeble.
How can you realise this in access?? Or is this impossible?
Also would it be possible to have for a certain part number multiple relations?
f.i. parts are fully interchangeble
restricted interchangeable
one way interchangeable
Thanks in advance
Hi all,
I built a database and I was wondering if anyone has any suggestions on how to normalize my DB. I think my table relations are wrong.
I'll post my DB for you people to view.
18354
Any Help will be appreciated
Can anyone shed light on why my Database seems to have stopped working so far as I've a combo box on a main form, which provides one half of a PK/FK relationship. The subform displays one or more records for this value. However, I've just entered the same 'value' (string) for an entry in the combo box as another, which shouldn't display any records in the subform yet - but it displays the records of the first combo 'entry'. This important thing is that the key's are all unique (I've doubled checked this), so why does it seem to not work?
Please.
I have 3 tables Metrics, FixedExpenses, Variable Expenses, I want them all to have a date in a form, and a subform for all the records to be added. I want to be able to do this without having 3 seperate date tables linked to the other three tables. I am not sure how to do this correctly. (I want to be able to see all the records for a certain day in these forms.)
View 1 Replies View RelatedI have a table named [Brand] and several tables named [Brand@@@Models], one for each field in the Brand table.I want each field from the [Brand] table to be related to it's specific Model table. I thought like that so I don't have a Brand#1 related to Brand#2 models, etc.. I didn't want to have all the models for all the brands in a single table, was I right to think like this?
View 6 Replies View RelatedI have a Customer table in an Accounts Receivable late-payments database that has very basic fields:
CustomerNumber, Name, BillToAddress1, BillToAddress2, City, State, Zip, Phone
As we get changes from new invoicing activity, I need the table to update the contact info. So, we get a spreadsheet each day with new invoicing activity, some of which will already have customers in our database. I need to capture any new addresses or other contact information to update my current records. We append the new info to the Invoices table, then need to grab the new addresses and update the Customer table.
I don't know why I don't know how to do this, as it seems so simple. Any help is greatly appreciated.