Whats Better For Database Design?
Aug 17, 2007
I need to store a question like...
I felt scared...
[]Before I was on the roller coaster
[]When I was on the roller coaster
[]After I was on the roller coaster
I need to be able to query/search the database for people that were scared "before", "during", "after", "before and during", "before and after", "during and after". Then I can categorize these people. What would be the best way to do it? Should I have 3 "yes/no" fields in my table, or one text field with those 3 as the lookup field? What one would make organizing the people easier?
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Aug 17, 2007
I need to store a question like...
I felt scared...
[]Before I was on the roller coaster
[]When I was on the roller coaster
[]After I was on the roller coaster
I need to be able to query/search the database for people that were scared "before", "during", "after", "before and during", "before and after", "during and after". Then I can categorize these people. What would be the best way to do it? Should I have 3 "yes/no" fields in my table, or one text field with those 3 as the lookup field? What one would make organizing the people easier? :D Thanks!
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Jun 22, 2006
Hi people,
Does anyone knows the difference between frontend and backend database? I look 4ward to hearing from any database expert.
black85
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Jun 13, 2007
Hello,
I have a database which every week I have to import an excel spreadsheet. Now this spread sheet will always have rows that repeat and will have somewhere between 700-1500 rows.
What is my best option to delete the rows that repeat? Meaning if a rows 1-10 have the same data then delete 9 of them. It will vary but I only need the unique record and the others can be deleted.
Would this be best way using a query? VB or something else?
There are 6 columns that will always be in the spreadsheet with the same column names:
ACCT_NUMBER
SHORT_ACCOUNT_TITLE
CONTACT_COMMENTS
CONTACT_TYPE_TEXT
ENTERED_BY
INITIAL_CONTACT_DATE
DATE_ENTERED
There will be rows that will repeat on every spreadsheet everytime. The only column that will not repeat will be CONTACT_COMMENTS. This column is needs to be deleted everytime.
I guess I didnt know if when I import the spreadsheet if something was possible that would:
Delete the CONTACT_COMMENTS then delete the duplicate rows upon importing or even after since this will have to be done everytime.
Thanks.
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Nov 8, 2005
Hello everyone. Im relatively new to access, i've only been using it for a few weeks. There are certain aspects that I cannot get my head around.
Is anyone willing to let me email them what I have done so far and the criteria for the database I am making and advise me where I am going wrong and where I need to be heading to get it right?
Thanks very much. Any help will be very much appreciated.
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Apr 15, 2007
When creating a database is it true that ideally i should avoid using the lookup wizard at table level and instead do that with combo boxes at form level ?
Thanks
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Feb 13, 2008
Hi
I have three tables
1 tblAssistFMWork in which is stored the fields JobNumber, SiteRefNumber, SurveyorNo
2 tbltable1 which has the field SiteRefNumber, Address1, Address2 etc
3 tblAssistFMSubJobNumbers which has the fields JobNumber, SubJobNumber.
JobNumber is the relationship between tables 2 and 3 and SiteRefNumber is the relationship between tables 1 and 2. There are other fields in each table but these are the relevant ones for this question.
Each JobNumber will have a minimum of one SubJobNumber but may have many. Each SubjobNumber starts at 1 for each new job so this may look like this in the table
JobNumber SubjobNumber
0001 1
0002 1
0002 2
etc
Each SiteRefNumber may have one or many JobNumbers
I wish to enter the date a SubJobNumber is completed and have been struggling with pulling the record into a form using a combo box because of the need to enter the JobNumber and also the SubJobNumber. So I decided to create a new table tblAssistFMJobDateCompleted which has the fields
JobNumber, SubJobNumber, DateJobCompleted
I need to report on a jobs status ie done or not done, but when I created the query for this it would only pull the records which have a completed date on them.
Could someone please give me some advice as to a way forward.
Thanks
Richard
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Feb 20, 2005
I have been reading other posts, and this where i should have started from the beginning,I am not very experienced with access (or forums as yous propably know) but can learn anything in no time (hopefully).
I would like to design a database to store all the info about a drag racing event including;
• event info (Event name, track name, event date)
• car info (Car name, gearbox type, diff ratio, engine name,)
• driver info (driver firstname, driver lastname)
• Engine info (make, model, engine compression, carburetor, front carburetor jets, rear carburetor jets, fuel pressure, engine timing at idle, total engine timing)
• Race info (track temperature, relative altitude, milibars, humidity, air temperature, tyre type, tyre size, tyre pressure hot, tyre pressure cold, stage RPM, shift RPM, reaction, 60foot time, 330foot time, 660foot time, 660foot MPH, 1000foot time, elapsed time, elapsed MPH, comments.)
My issue is design of tables and relationships. as you can probably see, obviously cars will do many runs at each event, and there engine setups and car setups(diff ratio) can differ each run. there might also be different drivers for the same car. weather info like track temp etc also change from race to race so I think it is possible I might need some sort of race time as-well. My main reason for the database, apart from organizing all my results would be so that I could do a run at an event and search previous races by the current runs weather info (relative altitude, milibars, humidity, etc) as to set the car up similar to keep it’s elapsed times consistent. Please, please, please help as I am at a total loss.
Thanks in advance!!
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Aug 5, 2006
Hi all
I've created a database from scratch. No data attached anywhere yet - I'm planning to input the data manually through my Form.
Well I have about 15 tables - CustomerInfo_tbl is the main table with the field RefNumber my primary key (it's an Autonumber which is sequentual). The rest of the tables are normal tables which I plan to link.(these tables also have RefNumber fields which are LongInteger) All the tables have about 10 fields in them.
So then I have 2 choices - I can make one big table (about 150 fields) or 15 tables with 10 fields each and the join them. I heard somewhere that it's better to have small tables and then link them up. So I'm going the smaller tables route.
I'll tell you what I did. I joined all the tables to my CustomerInfo_tbl with a one-to-one join. Then I made a Query, and then I set the RefNumber of the other tables equal to the RefNumber of my CustomerInfo_tbl.
I have 1 problem. When I enter some data into the form (I do not enter all the fields I leave some blank) it isn't displayed in the query, but it is displayed in the appropriate table. Only when I enter all the fields it is displayed in the query correctly and also in the tables.
Any help? I hope I made my question clear enough.
Thank you in advance.
Cheers
kruger101
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Nov 7, 2007
Hi, i got back to working on databases again for the first time in years and ive got confused on the offset.I went to set about desigining my tables and cant figure out how to do it.most of its simple stuff however this one bit stumps me.
Im designing a database to hold stock information in work we manufacture parts for rally cars and when a customer rings up i need to have the price at hand.I can store the prices etc of individual parts,however some people request kits which would have there own stock number and all the same relevant data i.e. Item Name,Type,Cost,Number in stock,Selling Price.......
These kits would consist of several items from the stock table.and when a kit is sold it will be inserted into the Sold Items Table together with the other individual parts a Customer may order.
Any help would be gratefully recieved.
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Oct 22, 2004
Hi all
I have a new project but before I get started, I need some advice on design.
I'm designing a student report card which I'll implement for 1300 students next year. The concept is an ongoing electronic markbook where teachers update the progress of each student and then at the end of the year print a report based on the captured data. The data is then passed on to the next teacher the following year.
My problem is data storage. During the course of a year a teacher may mark off up to 550 things a student can do. After 7 years of schooling (7 x 550) this amounts to a large amount of data. The thing is, I could reduce the number of fields if the multiselect list box stored multiple pieces of data. Option groups are no good because only one piece of data is stored and I certainly don't want thousands of check boxes.
Basically, I'm looking for a way to store multiple pieces of data in the one field. I'm also looking for a way in reducing the amount of clicks (i.e. one click instead of 2 to enter data)
I can't delete data because it's an audit requirement to keep it.
Any ideas??
I appreciate any help
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Mar 4, 2005
Can someone help me out with the design of my database? I currently have it set up one way and I am running into problems when I need to update information?
here are the attributes I have to put in the database for Printer cartridges:
ProductName
Manufacturer
Category
ProductCode
Price
Weight
Description
--------------
There can be numerous products with the same name
(for example: C120 is a product name but can be made by HP and by Canon)
There can be numerous products with the same ProductCode
(for example: F416301700 is a product code but can have multiple products with that code)
Currently I have it set up like this:
3 Tables
--------
PRODUCTS
ID
PRODUCTNAME
MANUFACTURER
CATEGORY
DETAILS
ID
PRODUCTCODE
PRICE
WEIGHT
DESCRIPTION
COMBINE
ID
DETAILS$ID
PRODUCTS$ID
-----------------
I have created that combine table to link the two other tables together.
I am running into problems now when i want to update a product and I don't know where to take this from here. I think if I have a better design from the get go it will prevent problems in the long run.
Can anyone help me with this?
Thanks
dp3133
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Mar 17, 2005
Hi, I’m fairly new to access and I’m creating (well, want to create) an employee database. I was wondering if anybody has created an employee database that keeps track of employees information like; personal information, salary, training the employees have taken, performance reviews and much more and if so do you have any suggestions on the design. Pretty much this database will be an electronic version of the employees personnel file.
Or does anybody know of any sample databases, not necessary an employee database that have been shared here in the past that I could look at and get ideas (formulas, qrys, tbls. etc.) from there.
Thank you.
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Jan 11, 2006
Hi,
I am designing a db for my car event that happens once a year.
It needs to hold car info like engine specs, car specs. Entrant details and event details, merchandise info.
I started out designing on paper (Can’t stress how much this helped a definite must for all noobs and experienced I would imagine) and went from there.
Ended up using northwind and modified it to suit my situation.definately recommend this to beginners as it gives you a good look at databases and great starting point. anyway this db has everything I need I think, the db is for holding info about participants in a car event. There is a form that the entrant would fill out asking there details and the car details. There is also a section on the form to buy merchandise as the car event has its own T-Shirt and DVD.I have added this into the database but I am having trouble finding where to put the T-Shirt Sizes.
E.g. there has been 3 events so far (1 per year), car event 1, car event 2, car event 3.each event has had a T-shirt. this t-shirt comes in sizes, xxs,xs,s,m,l,xl,xxl,xxxl,xxxxl,xxxxxl.my problem is do you add the same t-shirt in the products table 10 times just with different sizes.
also the Entrants form has subform event, where you select the event each year as to not have to enter entrants twice.i can not seem to figure this out either.
Once you look at the db you will have a better idea.
The database only has a very standard form for getting around while I complete the design, all the beautification will come after this stage.
Any other ideas would be greatly appreciated.
Thanks
(PLEASE COPY AND PASTE THE LINK INTO YOUR BROWSER OR IT WILL NOT WORK DUE TO REMOTE LOADING)
Access 2000
Access 2002-2003
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Jan 2, 2006
After being a member on this site for a while now I would like to get some opinions on "cost of application development" I know the forum covers a wide geographic area and the members cover a wide spectrum of degrees of expertise on Access and application development. So the question is this..What would your rates be and how would you determine your charges for developing Access applications for a business?PS... Please include your location if not in your profile.
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Jul 3, 2007
I am trying to do a partial duplication query. this is the code from the SQL view in accessSELECT filtered1.Company_NameFROM filtered1WHERE (((filtered1.Company_Name) In (SELECT [Company_Name] FROM [filtered1] As Tmp GROUP BY [Company_Name], Left([Company_Name],7) HAVING Count(*)>1 And Left([Company_Name],7) = Left([filtered1].[Company_Name],7))))ORDER BY filtered1.Company_Name;the table filtered1 has 1300 records, under the field Company_Name.the 7's apparently should get it to compare the first 7 letters, and if the same show me them. A whats going wrong, its not showing me any, asthough there are none, (which i know there are) and B. How would i get it to compare the first 7 letters across tables, with fields of the same name?thanksalex
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Aug 30, 2004
If I am going to get a Invoice/Statement programme made for me should it be in MS Access or Visual Basic, Thanks for your thoughts, Bob Vance
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Jan 19, 2005
Private Sub Save_Click()
Dim sSemester As String
sSemester = Semester1.value
DoCmd.RunSQL "INSERT INTO Hours (Semester) " & _
" VALUES('" + [sSemester] + "'); "
End Sub
keep getting syntax error
basically Semester1 is a text box with an input mask : LLL???" '"00;0;
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Feb 25, 2005
"Microsoft JScript runtime error 'null' is null or not an object line = 126, col = 7 (line is offset from the start of the script block). Error returned from property or method call." what does that mean?
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Sep 11, 2005
I am combining 12 Databases. I have split all 12 between the server and the desktop. My question is “Should I combing all of the data table on the server into one database or should I leave all of the individual application data tables in separate Databases on the server”. Additionally, is there a limit to the number of tables an Access DB can handle? My inclination is to keep the functionality separated but the problem I have is that some of the functionality within the applications overlap. Recommendations!
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Sep 23, 2005
Hi Guys,
I have sort of problem - I'm trying to desing the database for one of the organisations.
The entities are: Family, Child, Referral, Voucher, Receipt, Provider, Activity.
That's ok so far. I've been asked to do the option for the new address of the Child - in case if they move to the new place and keep the old one as well.
Family table is the 'child table type' for the Child table - family can have more than one child, but one child can be part of only one family (one to many relationship).
I thought to make a seperate table 'tblAddress' and store all addresses in this table - then link them to the family - this however requires from me to have additional field for - for instance - second address, third address, which in case there was no change in address would remain empty value.
The other option - which obviously is absolutely waste of space is to add straight away additional address fields in the 'Family' table itself.
Don't you know of any other, more appropriate solution?
If you need more detail - I can send the copy of the database which I have created so far.
I would appreciate any help.
Thanks,
Scabro
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Oct 6, 2006
To all you access Gurus
I have been asked to look at setting up and access database to do the following
To keep a record of pupils and 9 tasks the pupils have to do and also the total amount of time it took a pupil to do this task
They have a total of 25 Hours to do all tasks but this is spread out over the year.
What I need is someone to tell me the best table layout to do this
The pupil record has to have the following
First Name
Surname
Form
Total Hours taken for all 9 Objectives
A description of what the pupil did to achive each Objectives
record if that task is complete
Also Date Task was Complete
I have done a test database with just one table in it and inside that table
had all of the above but apart from name, form and total hours I repeated the rest nine times.
This just does not seem right
What I want is to pull up the pupil name and then select Task say from a Drop down box this would then insert a new field if it did not allready exist in pupil recored and then you can fill in the task details of course if the field/s all ready existed then to open that up to allow you to update this
It would then need to update the total Hours field in the pupil record with the hours it took to do that task/objective.
I have basic Access knowledge but i cannot think of best way to achive this can anyone help please
Stuart Purvis
ICT TECHNICIAN
HILBRE HIGH SCHOOL
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Jul 30, 2007
Hi,
New to forum. Beginner/Intermediate Access Experience.
Here is what I am trying to accomplish:
The database i am creating will basically need to have a user check-off a list of Fire Extinguishers that he has checked, on a monthly basis. For example, the user will enter a date, and then a form with a list of all the extinguishers will pop up, and he will place a check mark by each one. When he enters the check mark, that date will be stored so that we have a history of when each extinguisher was checked and by whom (using initials or something)
Currently, my design is simple, something like this:
tblUser
pkUserTableID
fldUserName
fldUserInitial
fldINSPECTIONDATE
tblExtinguisher
pkExtinguisherID
fldExtinguisherNumber
fldExtinguisherManufacturer
fldExtinguisherType
fkUserTableID
My question is this:
-Am I going down the right track with the 2 tables?
-Do I need a third table to Store the Historical Data?
-I am not quite sure how to layout the form so that all the extinguishers are listed.
I know these questions may seem vague, but any help would by highly appreciated.
thank you.
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Nov 21, 2007
I am trying to set up a database that manages responses to a variety of survey questionaires, and I want to know if I am on the right track before I proceed. Sorry if this gets a bit verbose:
Here's the general 'business rules':
1) There are many different historic survey types. Some have also not yet been defined.
2) A specific question may appear on more than one survey type.
3) Each survey type can have a different number of questions.
4) The 'valid' answers to a survey question fall into two general groupings:
- multiple choice (variable number of choices)
- freeform text (and "other__________ " could be a multiple choice response)
5) There will be a lot of repetition in the multiple-choice choices. For example, there will be lots of "TRUE/FALSE" or "YES/NO" questions, lots of 'Rate the following on a scale of 1 to 5' type questions, etc.
6) Some of the multiple choice valid-answer-sets may be more unique, such as '200,400,600,1000,other'.
7) We (sometimes) want to capture such information as 'don't know', or 'answer illegible' or 'not answered' or 'don't care', but these can just be more 'pre-set' choices in the db that do not appear on the paper forms
After some whiteboarding, I arrived at the attached db structure....
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Dec 31, 2007
Hello, I'm designing a database for a small country club for skiing, and am running into an issue. One of the goals of the database is to keep track of how many times potential members try out the skiing, currently we are storing the dates they ski in the same table as all of their personal information, We need to keep track of each individual date, so there are field for first visit, second visit, etc. We need to be able to run a report in which it can search the six date fields and pull up all records within a date range, is this possible, or should I create an additional table which stores dates, and is linked to the guest ID?
your help is greatly appreciated!!!!!
Thanks, Brian
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Dec 5, 2004
I have 7 tables:
Booking - BookingID
Course - CourseID
Company - CompanyID
Materials
Materials_on_course (had to have this in order to avoid many-to-many.)
Employee - EmployeeID
Employee_runs_course (had to have this in order to avoid many-to-many.)
I'm stuck with the Course and employee thing. Each employee has an expertise or two, and therefore each course has an expertise needed to run it (a specialist if you like).. so the PK in 'course table' is Course ID, you cannot have two PKs in one, so would it be right to say that the 'expertiseID' would have to go in 'Employee_runs_course' ?.. what would i do then? place 'expertise ID' as an FK in both employee and course tables?
Extra info:
Clients (tblCompany) can book one or many courses
A course can have one or many bookings made for it
A booking has one or many employees/courses
An employee can work on many bookings (obv if available)
Each employee has one or two expertise (usually only one)
and therefore a course has on expertise attached to it.
__
If you have a better way of designing it, shoot!
Attachment: ERD (kinda) of first draft.
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