Suggestions On How To Structure My Tables
Feb 9, 2005
I am creating a database where the user can import data from a number of spreadsheets (one spreadsheet for each company). Currently I have one table for each company with the year being the primary key. Each year when a rolled over spreadsheet needs to be generated for a certain company I have Access import the data to a blank template in excel which will display the prior 4 years of data (for informational purposes) and leave a column blank for the end user to fill in the current year data. When returned the current year data is imported into the database.
My problem is that I cannot see a way to do this without having a seperate table for each company. If I have one table with all company data I cannot use the year as the primary key. Any suggestions on how I can reduce the amount of tables I need. Setting up the rest of the tables wont be a problem, but future users of the database will have to go through the process of creating tables for new companies and creating all the queries and macros associated with that table.
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Jul 8, 2013
I need to combine two tables that have identical structure to one table. Different people have used them to insert data from different parts of our project. I have tried to find information about how to do this but so far with little luck.
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Apr 21, 2005
I don’t understand how to structure tables and relationships.
I want to build a form that allows the user to search for a postal service from a group of carriers.
User must be able to input into a form:
Weight in g, Kg or lbs
Insurance level required
Whether signature is required (Yes/No from drop down list)
Collection/drop-off options (tick boxes)
Each service has a different insurance level, some need signature; some services collect, and all have different rates.
I just want to know how to structure the database.
The main part of my question is what would be my main table be and what fields would be contained in it, and what foreign keys would be introduced to pull in info.
Would you have a different table for each service?
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May 8, 2006
If i make minor changes in the backend db structure (eg add a feild, change properties of a feild in a table,). These changes are not reflected in the frontend. how can thses changes be reflected in the frontend usig the simpest method.
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Dec 24, 2013
I have a table where in 286 different fields have to be updated by the users. ( Nature of project And i have 10 fields which are coming as a input from another table, so i use Append and Update query to add the new datas and update the datas in case of any changes in the input from another table. ( to avoid manual corrections)
Now coming to my real problem, all the 286 fields have to be updated by the user's are check box type, now what is the solution since access will not accept more than 255 fields?
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Aug 2, 2005
How can I add an additional field to a table based on the output of a query? For example, I have table A with 2 types of records and table B with only 1 type of record. Based on this, I can determine which records in table A are the same type as those in table B. I would however like to be able to flag within table A, those records in table A that are the same as those in table B.
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Oct 31, 2005
Firstly, I want to admit that my knowledge about data base construction is fairly basic.
I am trying to build a data base for humanitarian projects that do not at all resemple of the usual examples including customers, invoices, suppliers and what have you. My problem in constructing the DB is that most of the projects will address more than one subject and also include more than one target group and even operate in more than one country.
In my first attempt I filled the relevant fields (subjects, target groups and country) with more than one value using a form with multi select lists. The problem was that it was very difficult to query these multi-value fields and kind people in this forum strongly advised my to reconstruct the DB avoiding such fields.
What I need is to be able to view/print various selections based on precise criteria that include a region (or country), a subject and a target group in all kind of combinations.
The problem is to decide on what tables to establish and their interrelation. I guess that when entering a project record (using a form) I will have to store somewhere what subjects (could be more than five) and target groups the project include. It is, of course, not a problem to establish special tables or value lists for the subjects and target groups and countries, but where/how do I store the basic project information for a project and the multi-values that are related to the individual project?
I hope that this is not too confusing and I would appreciate any suggestion for a simple table structure and the interrelation between the tables.
Many thanks in advance.
Niels
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Oct 1, 2006
I want to add 3 new fields to the structure of around 80 tables (all with identical structures). Is there a way to automate this process?
Paul.
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Apr 2, 2015
I have been working on a a table design, but I am failing to create the correct relationships.My main table is the tblIncident with the three remaining tables being linked via a one to many relationship. I am using an auto number as my primary key, then linking that number to a FK in each table.
The end goal is to create one form with a varying sample of combo boxes, check boxes and data entry fields from each table. I did not plan to create a subform for each table, but maybe that is required?
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Nov 8, 2014
I am starting out creating a training database to track training needs and expiring training etc.I'm just looking for some tips as to how to structure the tables and relationships..I have an employee table, department table and training type table.However im wondering how i can set up requirments and then match these to check if the person is trained up to date on all required skills?
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Apr 12, 2013
I'm creating a timesheet/check in system (log in when the person starts work so it logs it and when they log out it logs that also for the manager or someone with high power to see.) for a fictitious scenario for an IT major project but I'm not sure where to start!
At the moment I have a few tables that are like this.
Table: Employees
Fields: EmployeeID, First Name, Last Name, DOB
Table: PayRates
Fields: RateID, EmployeeID, HourRate, TotalHours
Table:WorkTimes
Fields: EmployeeID, PayPeriod, WorkDate, StartTime, EndTime, TotalHours
I'm not entirely sure if this is all correctly structured, it just doesn't look/sound right to me.
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Sep 8, 2011
I have a psychology project where we soon use a questionnaire on a daily basis (maybe 80 variables per day per subject). Currently, there is no data in the database.
I've managed to create a table called day1 (with 80 day1 variables) and a form that looks like the questionnaire we want to use (and linked apropriately to the variables in the table for day1).
What is an easy way of duplicating the table and form for successive days? That is, i want the structure of the day1 table copied to another table (call it day2). It has exactly the same variables except they are slightly different to differentiate them from day1. I would like the form for day2 to have exactly the same layout as the form for day1, but link to the variables in table 2.
I know i could just couple the day1 table, change the variable names slightly, and then copy the form for day1 and change the links to point to table2, but there are many assessments (18 days).
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Mar 4, 2014
I haven't been on Access for a while so im still in the process of getting the cogs turning....... i am trying to design a database structure for controllers and heating.
each controller can have many heating units
each heating unit can use many controllers
rather than code everything, how could i set this up?
Example:
Controller01 can be used with Boiler01, Boiler04, Boiler12, Boiler 20
Controller02 can be used with Boiler01, Boiler05, Boiler15
Controller03 can be used with Boiler02, Boiler03, Boiler04, Boiler20
I have a table with a ControllerID and a table with a BoilerID. In the boiler table, i have the ControllerID and a one to many relationship.
How would I set this up?
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Jul 19, 2014
I need a table structure that will allow me to have a repair log data entry form with 3 cascading combo boxes on the repair log data entry form. There can be many repairs for a specific job but most of the time there will be one repair per job and 1% of the time two or more repairs for a specific job.
I am pulling a report based on a query that will show the repaired location, facility type, repaired item, repaired component on that item and other details related to the repair.I uploaded an empty database with the structure.
Cascade levels
I. Facility Type
II. Item by [I]
III. Component by [II]
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Jan 8, 2013
I need to modify my customer table to cater for multiple names at one address.
Should I move all the addresses into their own separate table or leave them as is (name-Address-postcode- email etc in one table) and put the additional addressees into a separate table or is there a better way I have not thought of.
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Aug 17, 2015
Looking for efficient table structure for this. Let's say I have a list of contractors who will get paid a certain amount of money each week. The amount of money changes each week by measuring the amount of work done, giving it a price and calculating it. The fields are these:
[pk]WeeklyWorkID
WorkID
Quantity
UnitPrice
Total=Qty*UnitPrice (not stored in this table)
EmployeeID
WeekID
So far, it's all good, but we wish to pay the contractors in an unusual way. Let's say he makes $16,000 of work this week, and we want to pay him using cash AND/OR either one or multiple debit cards. For example:
Cash: $1,500
Debit card 45: $7,500
Debit card 71: $4,000
Debit card 13: $3,000
Total = $ 16,000
We can only deposit $7,500 max in each card. But it's even worse... two or more contractors can SHARE the card and it's not always the same card. Sounds pretty funky, but it's what the company wants to do. So, what would you recommend me in this case?
I'm guessing I'm gonna need these tables: tbWeeks to hold the week number, tbCards to store the cards' info, and an extra table to make a many to many relationship between the cards and the employees.
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Feb 28, 2013
I am developing a claim tracking database that tracks dates of events that occur in the course of processing a claim; such as, Loss Date, Report Date, Estimate Date, Payment Date, etc.
I currently have the following tables set up:
tblClaim
ClaimID
ClaimNumber
tblEvents
EventID
EventName
tblClaimEvents
ClaimEventID
fkClaimID
fkEventID
EventDate
With this table structure there is a many-to-many relationship between Claims and Events, but, there will only be one of each event per claim. Is there a better way to set up the tables to enforce a 1-to-1 relationship?
I was planning on creating a form for the Claim table with a subform for the Events joined on ClaimID and fkClaimID, but that would allow users to create more than one set of Events per claim, if that makes sense.
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May 20, 2005
I wonder if someone can give a suggestion on how to start this database. I am doing a material list database, but i've come across a situation where certain materials require a lot of text entry as opposed to some of the others where you simple enter data such as " density, grade, strength, etc" values. Because the layout/fields would be so different for the different materials (eg. plastics, metals, elastomer, etc.) it possibly might be a good idea to just separate them into different table groupings altogether? what do you think? Originally they were entered in Word and i was thinking of putting in access to standardize it. But what I'm trying to get at is the format in word was much like a one page report with headings and short paragraphs for this section of materials. Is it worth it and how should I go about having large text and heading entry, form use, report layout?
Thanks!
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Jun 2, 2006
I am starting a new database today at work. I need some suggestions.
First of all, we will be having people enter data into many sections of the database at the same time...should I create seperate databases for these sections and link them together somehow so that it doesnt freak out with multiple users or being saved while open in different computer on the server?
Will it freak out anyways? What happens exactly if you open same database on two different computers.
Next, I would like to know if anyone has any further ideas about creating this database the right way in a server setting with multiple users!
Thanks.
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Nov 8, 2004
Ok a bit of back ground. I'm building a access front end to a sql database. The end user will access the information in the database via asp pages on the Internet. They will only be viewing and not changing this information.
Now from the asp will be links to other pages within the same site. So they only have to be relative links eg .../folder/page.htm. But I want the person who inputs the information in the access front end to be able to test that the link works before saving the record.
I would prefer them to be able to press a button, then have access grab the link from the text box, add the relevant other bits eg http:// and load the page.
Any suggestions how I should go about it?
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Jun 21, 2006
Hey all, I am currently looking to make a great database system for use within my community. What I currently have is a mdb with just 3 tbls but will be building from there. I have the normalization down thus far, but wanted to put things out there for any suggestions or ideas to make this a useful system. This is not a profit situation, and will generally be used only by myself or possibly one or two others.
What I have is a database that tracks the homeowners within our community (subdivision) and their properties. So far I have 3 tbls
tblOwners
- OPkey (autonumber)
- OFname
- OLName
- OStAddress
- OCity
- OState
- OZip
tblUnits
- UnitPKey
- StNum
- Street
- PIN
- Check2005
tblJct
- UnitPKey
- OPKey
Structurally this works great so far. I can easily relate properties to their owners and link multiple properties to those who own more than 1 (landlords). I structured it this way since the two tbls had many to many relationships, so the junction tbl made the most sense.
Now I am looking to add information from a tract search (mortgage holder information) which technically relates to both of these tbls (Unit & Owner) as well. I already know that most of the owners with multiple properties will most likely have the same mortgage holder, but that is not definitive. Since the same mortgage holder could easily be associated to multiple properties within the community, I know I have to have an independent tbl for that information as well.
What I would like to head for is something that will allow me to send notifications, letters, flyers and the likes to either the owners, residents, mortgage holders, or any combination of the three. I have attempted to create a few thus far but have issues with getting all of the required data output to Word, so I am thinking I may need to design these items in a Form instead.
Any thoughts or comments would be appreciated. I know I am heading in the right direction, but just putting it out here for the Access community to put in their 2 cents.
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Jan 4, 2007
Hi, I'm afraid I am unable to be overly technical with my question as i've only really had a 2 day access course, sorry in advance!!!
Problem
I am trying to create a skills Matrix, it will need to include approximately 400 different skills which a staff member my or may not be trained on. I started by trying to do the lot on one table and an one input form but hit the 255 field limit. So now i'm messing around splitting it down into approx 7 sections. So, now i have 7 tables of skills and 7 input forms for the user to fill the table with, each table with a duplicated list of ID numbers for the staff. This seems really inefficient to me and i'm basically wondering if someone might give me a couple of tips structure wise. Also, could i just have one table for the staff ID's seperately? I tried to do this but cannot find a way of relating the skills input on the form to the specific ID if they are not on the same table. I know this is all probably really basic (and probably poorly explained and confusing too) but i've scoured the net as per usual and came up with nothing (i got some lovely code online which disabled the scroll button from moving records yey! :p ), so ive taken the brave step of joining a forum.
Thankyou for your time everyone.
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Mar 10, 2008
I have a databse that i want to perform some analysis on to identify some trends. The database consists of album sales of a year. I have availble all details of orders, customers and albums. All tbales are joined with one to many relationships. Can anyone suggest some queries that i could do to perform some meaniful analysis to identify some trends in the data. :confused:
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Mar 12, 2008
I am developing an app for a small medical office that requires a way of tracking periodic health testing for their patients. They are ultimately requesting a report that informs them of upcoming required tests for their patients.
Most periodic tests for a given patient will be manually assigned by the user in the frmPatient form via a combo box that lists available tests (for example, Mr. Smith is assigned a prostate exam with a frequency of every X months). However some tests need to be automatically assigned depending on the age of the patient (for example, when a male patient turns 50 years of age he needs to have a prostate exam every 12 months).
My Question:
What is the best approach to the automatic requirement of adding/flagging/indicating in a report that there are tests that are needed for patients that is determined solely by their age, eventhough this test has not been previously assigned manually?
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Mar 2, 2005
Can anyone suggest a good form layout for my database below?
I have also included the database in access 2002 version!
tblEvent
EventID (int autonumber not null primary key)
RaceID (int foreign key to tblRace.RaceID)
EventName
EventTrack
EventDate
tblCar
CarID (int autonumber not null primary key)
CarName
tblCarSetup
CarSetupID (int autonumber not null primary key)
CarID (int foreign key to tblCars.CarID)
TyreType
TyreSize
GearBox
DiffRatio
tblDriver
DriverID (int autonumber not null primary key)
FirstName
LastName
tblEngine
EngineID (int autonumber not null primary key)
EngineMake
EngineModel
tblEngineSetup
EngineSetupID (int autonumber not null primary key)
EngineID (int foreign key to tblEngine.EngineID)
EngineCompression
Carburetor
FrontJets
RearJets
FuelPressure
BaseTiming
TotalAdvance
tblRaceVariables
RaceMasterID (int foreign key to tblRaceMaster.RaceMasterID)
RaceTime
TrackTemperature
RelativeAltitude
Milibars
Humidity
AirTemperature
TyrePressureHot
TyrePressureCold
StageRPM
ShiftRPM
Reaction
60ftTime
330ftTime
660ftTime
660ftMPH
1000ftTime
ElapsedTime
ElapsedMPH
Coments
tblRaceMaster
RaceMasterID (int autonumber not null primary key)
EventID (int foreign key to tblEvent.EventID)
CarID (int foreign key to tblCar.CarID)
EngineID (int foreign key to tblEngine.EngineID)
DriverID (int foreign key to tblDriver.DriverID)
All relationships will be RI Link with delete cascade.
Thanks,
Dean
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Sep 8, 2005
I needs some advice on how to proceed.
Our company is devolving some operations to a sub office for 3 out of 11 business units. we have a central DB that we use to record monthly events the problem is that the parent group has to be able to update records for all units but the sub office is only allowed to see and edit their records
At the moment the data is all stored in one table and we use a Front end back end with local front ends for access I have a table to say if a unit is part of the sub office or not and in the sub office front end i have a Query which links the 2 tables together and filters the records to show only sub office
SELECT tbldatatable.*, tblShipName.Manager
FROM tblShipName RIGHT JOIN tbldatatable ON tblShipName.ShipName = tbldatatable.Ship
WHERE (((tblShipName.Manager)="nv"));
the remainder of the forms and querys all run from this query rather than the tables
the problem is the join makes it a non updatable record set
what is the advice on how to achieve what i need as i cant see a simple way to proceed
thanks
ND
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