More Than 4 Tables? Gd Thing Or Bad Thing?
Mar 9, 2008
Hi, im currently under going a Driving school project database. I have the following tables, Client, Instructor, Lesson and Lesson Type. However i feel like i want to go into more depth, e.g. make tables like recording sections of theory and practical tests, etc.
Currently my database with 4 tables is in 3rd normal form.. but say if i had 10 tables linking via relationship in query, what normal form is this? Is this gd practice or bad practice? :confused::confused:
This has been going through my head lately and im wanting to get take alot into consideration for my project. This might be absurd question to say in the forum but hope anyone can help me and explanation for me.:o
Thanks and much appreciated! :)
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Nov 13, 2007
I make that ERD :-
http://www.imagehosting.com/out.php/i1365582_erd.PNG
is there any suggest to add or remove fields or tables ?
I attached the file.
and thanks.
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Aug 30, 2005
I've been ask to think of some solution to this problem but i'm no way near of it. I have a txt file (ascii) with aprox. 1845000 lines.
The code is something like this:
"++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++
Date:02-12-2004Time: 11:06:24
Job Number:2542
Job Name:al
Priority:Normal
User Name:msescudeiro
Customer:
Account:1341000
Distribution:
Notes:
--------------------------------------------------------------------------------
Original Filename:C-0884_Vers_E.TIF
recycled paper
Used Area:0
Plotted Area:0
Media:paper
Used Area:4977
Plotted Area:4977
Media:film
Used Area:0
Plotted Area:0
Media:vellum
Used Area:0
Plotted Area:0
Operation Count
Mirror:0
Rotate:0
Zoom:0
Stamp:0
Fold:38
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++
I need to have a table like this:
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Mar 25, 2005
I have a very simple (it has to be) database which holds names, address’s and telephone numbers (I told you). What I want to do is this when I come to the Town field, a drop down list is displayed with a few local town names (Peterborough, Huntingdon etc) and the respective STC code (01733, 01480 etc). When I select Peterborough in the town box the STC code 01733 is placed in the STD field automatically. I have two tables, one with the address’s (including Town and STC) field and the second one with two fields Town and STC. How do I get the two tables or forms to work together. Any help would be appreciated, many thanks.
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Feb 7, 2006
have a table call 'ClinicTimeTable' there is a column call 'ClinicDate', another column called 'DrID', different row could have same 'ClinicDate' and 'DrID', so I wanna to count how many Drs in a particular day, I have following code, but it acts so werid, it onlys work for some dates! say if I put 02/02/2006 then I can get the number of DrID by observing 'count', however, if I put 01/02/2006 like below, count is 0! but there is some records with 02/02/2006 (I open the table directly in Access), how can this happening? how can it only partly works? it will make more sense if it don't work at all.
Dataset ds = new Dataset();
query = "SELECT DISTINCT DrID FROM ClinicTimeTable WHERE ClinicDate = #01/02/2006#" ;
OleDbDataAdapter myAdapter = new OleDbDataAdapter( query, oleDbConnection1 );
myAdapter.Fill ( ds );
int count = dds.Tables[0].Rows.Count;
any helps will be so appreciated! I am going mad at this problem!
by the way, i just tested that if any day in Jan 2006 is fine, say if i search 23/02/2006 or 22/02/2006 is fine... can't imagine why...
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Jul 1, 2006
Moderators - please help. Apparently there's a 70 message limit on saved Private Messages (PM's). I've long since exceeded the limit, but can't find a mechanism in this forum to delete unwanted PM's Where am I going wrong here?
Best wishes - Bob
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Jan 3, 2007
I have many queries that all do the same thing. The problem is that they're connected to specific controls on a form, so I have to make a new query everytime I make a new form to perform the same task as the others. This would be eliminated if there was a way to use the criteria the same way you would in code, like Me!controlname. Is there anyway possible to make these queries more universal so that they can be used by many forms?
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May 6, 2005
I have a form, with some controls, a subform and some command buttons. In the OnKeyDown Event of the subform, i put the following:
If Me.NewRecord And Keycode = 9 Then
Me.Parent.cmdAddSong.SetFocus
End If
However, as soon as i hit the tab key when i am in the new record of the continuous sub form, rather than it moves to cmdAddSong, the focus is set to the control after it (cmdDeleteSong). Similarly, if i try to set the focus, to the cmdDeleteSong, after i hit the tab key, the focus will move to a next control (cmdAddAlbums).
Any ideas why does the focus does not go to the control i specified in the Me.Parent.Control, but it goes to Me.Parent.Control + 1 ?
Thank You
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Aug 11, 2005
gosh, I can't believe I forgot simple thing. when I'm opening a form in Access it automatically goes to new/blank form, I'm try to make it go to first record instead and can't remember how I didin't before.
Thx for help
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Feb 11, 2005
This is a lot like my last post, but not exactly...
I have a table with some really strange fields. They all have 4-8 digits, and those digits stand for the date--but not for simple mmddyy. This is much more complicated than that. Each 4 or 2-digit number set stands for something different.
|___START____|_____END____|
|___196303___|___199912___|
|___192603___|___199910___|
|___193101___|___199812___|
|___195606___|___200112___|
|___192801___|___1999_____|
is a sample of the numbers in the fields. Here is the way the website says to define them:
NOTE: The seventh and eighth columns of each document describe the initial and most recent coverage dates using the SICI standard, which defines standard month codes for seasonal and quarterly issues. (A full list of the month codes used for seasonal and quarterly issues appears below.) Dates may appear as a year (1989), a year and month (197601), or a year, month, and day (19331229). Sometimes the format for initial and most recent coverage dates may differ due to changes in publication frequency over the history of the journal. For example, coverage may start with an annual issue (1898) but finish with a monthly issue (199912) or coverage may start with a monthly issue (193002) but finish with a supplemental issue containing no corresponding month (1972).
Month Codes Used in JSTOR Delimited Lists
01=January02=February03=March04=April05=May06=June07=July08=August09=September10=October11=November12=December20=Winter (when it appears at the beginning of a year)21=Spring22=Summer23=Fall24=Winter (when it appears at the end of a year)25=Early Spring26=Late Spring27=Early Fall28=Late Fall29=Early Summer30=Late Summer31=1st quarter32=2nd quarter33=3rd quarter34=4th quarterSo, if it's a 6 digit number, that's going to be 4 for the year, and 2 for one of the codes above.
If it's an 8 digit number, it's going to be 4 for the year, 2 for the month, and 2 for the day.
If it's a 4 digit number, it's just 4 for the year.
There are 665 of these, and I'll need to update them each time I download a new version of the file. So.... can anyone help me? If I could get the numbers into separate cells (at least temporarily), I could do a find and replace and add my final results back together in one cell when it's finished. I would want something that would put the first 4 digits into a cell, then the first 2 digits of what's left into a cell, and then the last two digits of what's left into another cell. I don't mind running 3 different queries.
Thanks,
Siena
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Apr 14, 2008
I've been using Access 2002 since approx 2003 now. I won't upgrade as I've used 2007 and don't like the new interface.
I'm competent with it and regularly build locally used databases or databases for websites.
About 2 months ago my copy starting pissing me off. Everytime I click on any of the "create" links, it plays an alert sound. Anytime I click on an already created query/table/report etc it plays an alert sound. The only other time it happens is if I click on the button in the toolbar in windows to open a previously minimised window.
There seems to be no option to turn this off or on anywhere, so I'm completely stumped. It's not critical but it's bloody annoying. Anyone else had this and figure it out or anyone simply know how to stop it doing it?
I could obviously turn the speakers off but I like to listen to music whilst I work, and shouldn't have to either!
Thanks in advance
PS - My "Provide feedback with sounds" option is set to OFF
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Aug 24, 2006
Hey all, I've been banging my head all day trying to find a method and have nothing. Perhaps someone could guide me towards the right path... Here's a generic simplification of what I have:
ID# - Friend
1 - Fred
1 - George
2 - Fred
3 - Bill
3 - Ray
3 - Scott
Here's what I'm hoping to end up with:
ID# - Friends
1 - Fred, George
2 - Fred
3 - Bill, Ray, Scott
or even this would get me there:
ID# - Friend1 - Friend2 - Friend3
1 - Fred - George
2 - Fred
3 - Bill - Ray - Scott
I'm dealing with thousands of id#'s and thousands of possible friend's names.
Any help out there? If I need to explain myself better, just ask and i'll write some more...
thanx for any help you can offer...
Jim
P.S. I'm only a lite-weight in programming. I've been trying with a thousand different query methods so far using temporary tables and anything else I could possibly imagine...
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Mar 23, 2005
i wanted to be able to send an email with attachement for this i created an outlook object and i filled in all the parameters and it creates the message successfully with the attachement and everything, but when i press send instead of sending the email to the recpient it puts it in the sent items without sending it, unless i opened my outlook and looked into the sent emails box then it sends it, i dont know if i can do something in order for the email to be sent automatically because i dont know if the problem is the code or it s a sort of security thing for outlook
if anyone has an idea.......................
thanks
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Sep 26, 2012
Currently trying to build a database for customer management and order placement/tracking. Want to set a couple of rules so that if I for instance click yes of billing and shipping address the same that the database will automatically fill the shipping address with the data I inputted for the billing address in the same table.
The other issue I can see I'll run into is, I want to be able to select one of the company ID's (made up of a three letter abbreviation of the full company name) in the product ordering table and it will automatically fill in the rest of the customer data (phone, email, address etc) data into that form.
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May 30, 2014
What I have is a database setup with multiple tables in which different areas of my DC can input information simultaneously into their respective tables. I then have another database linked to it for myself to have a live view of each updated record. I would like to see all the records of each table in 1 single table (possibly just sorted ascending by time). Each table has the same Field headings but may have different qtys of records. As I will then have it linked to an Excel table to VLOOKUP from it.
I have tried Union coding but always get Syntax Error etc.
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Dec 3, 2012
I have 2 identical database in terms of structure but it differs in data.
Basically I would like to import data from subDatabase to mainDatabase and ensuring that there are no duplicate records.
I have used the "link to datasource method" through importing the tables to have the "updating" function.
However, this method also means that the records in mainDatabase are also imported over to subDatabase which I do not want.
Is there a method to ensure that the records are shared/update one way only? (i.e. import from subDatabase to mainDatabase and not main to sub?)
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Feb 10, 2015
I'm using the MS Access 2010 ExportwithFormating action to export three tables to a single MS Excel 2010 workbook. The action overwrites the first excel worksheet each time instead of saving all three worksheets in a single excel workbook.
How can I export three tables into a single excel workbook.
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Jan 14, 2013
I have created a table that acts as a header for my data and a second table that acts as line item data. What I need to do now is add a second child table that uses the line item data as its parent table and stores associated line items for each record. Is this possible?
This is a skeleton view of what I'm going for:
Master Table:
tlbAuditReportHeader
- AuditDate
- AuditArea
- Auditor
Sub Table:
tblDiscrepancy
- Discrepancy
- CorrectiveAction
- ActualCompletionDate
- VerifiedDate
- Notes
Sub table to Sub Table
tblFollowUp
- FollowUpDate
- AssignedTo
- SpokeWith
- EstimatedCompletionDate
- Notes
Sometimes tasks change hands or are pushed back depending on work load. It would be nice to be able to track something like this.
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Apr 23, 2013
I am using calculated field as a data type in access 2010.
They are working fine.
However, I added a new field and now the final calc won't work.
I have Subtotal adding loads of fields together. Works fine.
Then I have a VATunit field which is a double integer, so enter 20 and my next field is VATTotal calculates the SubTotal + the VATunit by doing (Subtotal/100)*VATunit. This calculation is fine and gives me the correct amount.
The next field is a Total field. Which adds Subtotal and the VATTotal together. Howver, the Total is the same as Subtotal. It is not adding the VATTotal to it?
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Apr 19, 2007
I have some experience doing 'Update Query' using two different tables but I'm having a hard time doing an 'Update Query' using 3 tables.
I have my source table TP05XY with the fields 'Mark' 'Date' 'UTM_Edig' and 'UTM_Ndig'. Mark and Date are my primary keys (they together uniquely ID each record). I have my Observations table with the fields 'Mark' 'Date' and 'Obs_ID'. The last table is Locations with 'Obs_ID' 'UTM_E' and 'UTM_N'.
I want to update my fields UTM_E and UTM_N from UTM_Edig and UTM_Ndig. However, to do so, I have to go from my TP05XY table, through Observations table to update Locations table. Table TP05XY is joined to Observations through 'Mark' and 'Date' and Observations table is linked to Locations through 'Obs_ID' field.
I have tried a few options without success ... anyone knows how to do it?
Thanks,
Josée
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Jul 19, 2014
I have being playing with ms access but I really don't know much about it or databases in general.I have created a very simple database to gather twitter following/followers data for research purposes.One table (table01) has a field for the "boss" user (=the user who I gather data for), another field for "client" (=bosses followers or friends).Both fields are numeric and contain the users id's.In order to distinguish if the link is follower or friend there is a third field, called type which can be either 1 (=follower) or 2 (=friend).So the data would look like this:
boss - client - type
12345, 67890, 1
12345, 54321, 2
If user with user id 12345 had a follower (type 1) with user id 67890 and a friend with user id 54321...In order to avoid getting duplicate rows I also added a unique identifier which is of the form boss_id-user_id-type.So the above row looks like this:
12345-67890-1, 12345, 67890, 1
12345-54321-2, 12345, 54321, 2
That works just fine.For several reasons I also needed data of the form source - target.So I also made another table (table02) of this form.
67890, 12345
12345, 54321
...
In table 2 you don't need the "type" field since the position of the user id shows the type of relationship.Still, you need a unique identifier in order to avoid duplicates, so I added on with the form: source_id-client_id..So table02 lookes like this
67890-12345, 67890, 12345
12345-54321, 12345, 54321
...
Both tables also have a date/time stamp for each line.As you can see, table01, having also a type field is bigger than table02.The problem is when I try to append data, exactly the same data in both tables.Appending data to table01 is ok, while appending data to table02 (which is smaller, having one less field) takes a really long time, maybe 10 times as long as appending data to table01.To make sure that no query's are causing the problem I have tried first creating temporary tables with the data to be appended, no duplicates, nothing that would cause the database to make extra calculations and used a simple update query with no filters to append data.Still I get the same result, table02 takes a very long time to finish while table01 finishes in no time.
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May 13, 2015
I am currently using Microsoft Access 2010 32bit, and have one database acting as parent, with a second linked database as a client for people to work with, and the parent database has tables imported from Sage V21 via ODBC. I have used the following code as specified in other examples as follows:
Code:
DoCmd.TransferDatabase acImport, "ODBC Database", "ODBC;DSN=MyDNSMachineName;UID=MyUID;PWD=MyPassword;LANGUAGE=us_english;" & "DATABASE=pubs", acTable, "INVOICE", "INVOICE"
one of the tables has 10k records in it, it only transfers 77 records. After manually attempting an import via the ODBC wizard it finally lets me access all 10k records.I wish to have a single button click delete and import fresh tables without worrying if all the data is coming across.Also, when manually adding a table, I am usually asked by the wizard to specify an index, but with the code above, I am not offered that option and the tables come across with no index. I am led to believe that having tables that link to each other without an index is bad, so how do I ensure an index is created?
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May 29, 2014
I have two tables of data, each relating to three business branches (branches A, B and C).
Table 1 shows the expenditure of each branch (by fuel, premises and wages).
Table 2 shows a number of units for each branch (mileage, floorspace and sales).
What I would like to do is calculate unit costs, based on the expenditure in Table 1, divided by a relevant unit in Table 2. The catch is that I want to have a third table which allows the user to specify which expenditure (from Table 1) is combined with which unit (from Table 2) to generate the calculated unit costs. I've been able to do this in Excel, and have attached an example. I've also attached an incomplete Access version with the first two tables. Given the complexity of my actual data, I feel this could be better handled in Access than Excel.
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Feb 18, 2013
I have an Access Table with about 28,000 Automobile dealerships across the country shown. I've joined a new/small phone contact table to this to keep up with our phone contacts with the dealership and followup efforts. When I search/filter on the dealership table all is fine. However when I search/filter on the phone contact table with a few test entries, I get nothing at all. I supposed that after joining the tables, I'd be able to do a search on the field named follow up date and find/filter today's date or other dates and locate which dealerships to contact when the correct date arrives. But nothing.
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Jul 24, 2014
I have developed a Microsoft Access 2010 database for my client and the database is split with Front-end/Back-end, the Back-end and the database is shared on Network, The client operating system and applications for all users are hosted and consistent and the service is delivered over Citrix.
The database some times corrupt the tables record and give a permanent #Delete Error, I have attached one of the database table and the screenshot of the error,
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Sep 26, 2012
I want to fill local tables in some application with disconnected recordset. The tables in the front end application having the same table structure as in the back end database. The front end application was linked with the back end password protected database tables. I want no connected linked tables in the front end application. How can I fill the local tables in the front end application with the back-end password protected tables?
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