Hi guys, I'm fairly new to databases and am just creating sample ones at the moment and following tutorials from books. I tried to create my own cinema/movie database yesterday and there's something wrong.
I really wanted to work this one out for myself but after trying many different combinations of various relationships I just can't seem to get it working.
I have four tables..
A member table: MemberID
A booking table: MovieID, Screening Number, MemberID
A movie table: MovieID
A screening table: Screening Number
So the booking table is a composite key that links the member tbale (via the memberid), the movie table (via the movieID) and the screening table (via the screening number)
The problem occurs when I try to make a booking form for members to book a movie.
I use the form wizard and take the following fields:
The MemberID from the member table, the Screening Number and MovieID from the booking table. Then I add other relevent information from the Movie and screening table (for example, screening time, date, price etc from the screenig table and movie name, information from the the Movie table)
The MemberID is displayed on the main form with the other information in a sub form.
The problem I am having is when I enter a booking on the form, I get an error telling me the Microsoft Jet Engine cannot find the screening number in the screening table or something like that.
It lets me enter the other information but not with the screening number.
Hi folks, I'm new here - pretty hot at Excel but a total newbie at Access, So..
OK, I've got my database up and running. It keeps records of about 500 staff - everything is working fine but I now want to do stuff beyond my capabilities.. I've got a master record (Master Staff List) and a main input form (Data entry/amandment form). One of the input controls (via a sub-form) is for recording the time staff have spent working at a higher grade. Now if this was a one-off occurrence I could handle it but any one person could have multiple occasions that need recorded and I don't want to 'overwrite' the previous record. I have tried researching the problem and I think I need a 'one-to-many' relational table and a way to add a new period from the subform when required. The subform would also need to show blank when I opened it.
Hi all, i have a relational database. In a form, Transactions, i have a text box, CustomerID, which relates to the primary key of the customers table. At the moment, if i enter a number that has no related record in the customers table, it will alert me only when i try to close the form or move to another record. I am wondering if it is possible to check for a related record immediately after the text box loses the focus.
The first time a person tries to use Microsoft Access, they are likely to miss the whole point of what a database is and how to use it. When they start having trouble making it work for them, they think in terms of what they may be doing wrong in their use of the obvious tools of Access. But often their problem is that they are unfamiliar with the principles that make databases so useful and they have started with a flawed database schema.
This tutorial is intended to explain the underlying principles of relational databases. It is, admittedly, rather theoretical and perhaps even boring. But without an understanding of these principles, a beginner cannot hope to use Access for any really useful purpose. If you are a beginner, I urge you to read through the entire tutorial.
There are several issues that arise time and time again, such as:
. Storing multiple values in a field. . Storing calculated values in a table. . Determining primary keys. . Using Autonumbers. . How many tables does this database need? . Why don't my queries work?
Sometimes answers in the forum make it sound like these things are a matter of preference, or "which is the best?" But in most cases, they are not--there are well established rules that determine the one correct answer. It is only with an understanding of the principles of relational database theory that you can determine the answers.
So I hope you will find it worth your time to study this 7-page tutorial. If you think you've found something in it that's incorrect, incomplete or impossible to understand, please feel free to contact me. I have been known to make mistakes!
Im creating a data access page overtop of a relational database. the database is simple... it has customers and workorders. there may be more than one workorder for a customer.
When I create a new customer record through my data access page, I want it to automaticly create a new workorder (filled with 0's)
Does anyone know how to do that?
Thanks --Ben
PS: I understand SQL... I just need to know where to enter it (if necessary)
I have a simple relational database with the proper linking tables, etc. I am normalized through BCNF. I have a table that will track tasking details, however, more than one person is assigned the tasking. How do i add to my form the ability to add additional people to the tasking?
If I drag and drop the name field then it is a one name for one box deal. I want to create a combo box that uses a query to prepoulate multiple elgible names (already built) and then you can select the person you want. Afterwards I want the task assigner to dynamically add additional people to the task with no true limit as the group can be as small as one and as large as thirty.
I attached a small screenshot of the basic table structure. I need to be able to add multiple SME's to the one tasking...
I'm attempting to set up a relational database utilizing a composite key of several data fields. I had no problem doing this with FileMaker Pro yet with Access 2003 I'm having problems. For example, in Design View I select the field names needed for the composite key.
Yet when I click save I get a message "Microsoft Access can't save property changes for linked tables." As a result I'm not able to construct a composite key of the several data fields selected.
Not sure if anyone can help. Its been about 10years since I've built a relational access database, but offered to build one for someone, but am now a little stuck.
Its a photo sales tracking db.
I have 3 main tables. Photos, Sales & Customers.
The main form is a photo form with embedded subform showing the list of the sales related to the photo. This works well!
The second form is a customer form with embedded subform showing the list of purchases (sales form) related to that customer. This again works, but I cant get it to show the photo title of that sale in that subform. I think I am missing some sort of link.
I have relationships between photos and sales, and customer and sales. But it always shows a blank photo title field in the customer purchases list
This is a very brief outline and I can explain in more detail if some thinks they can help. So far the database looks good and mostly works but it is all a bit relevant if I cant get the customer purchases to automatically show the name of the photo sold.
Hello everyone! I am completely new to MS ACCESS, so this problem might be fairly simple but yet it is eating my head.So if I get some directions it will be greatly helpful and appreciated. Description: The bakery buys ingredients from number of suppliers, makes a several kinds of cakes and sells to few shops. There are about seven ingredients in the first week with the possibility to add new in ingredients later on. There’s a catch though; on any day, only a single type of cake is made, in a single batch and all of them must be delivered before the next day’s cake are finished. It is necessary to be able to rack the ingredients used in a batch back to the suppliers. I have made tables for suppliers, ingredients, orders and order line (with fields ordereId, ingredientId, quantity, unit price). Forms that allowing users to allow new ingredients types, suppliers, and new order for ingredient are required which I have made. These forms are to be used to add the data for which ingredients are needed in the second week of baking. So these are my questions on which I am stuck in
1. Do I need any more Forms or do I need to edit my form? 2. Is it okey to put table as the data source or would it be better to place a query? 3. How do I keep records of my earnings and expenditure, expenditure and keep them updated with my databases? I hope you will understand that I am completely new to these topics and its really hard for me to grasp them all at once. Merely some guiding points will be of great help. Thank you. 6pandn21
Im trying to figure out how to model 'Printer' and 'Cartridge' information. The relationship between them is Many to Many, but to add to my confusion, more than one cartridge can be used in a printer (Black + different colour cartridges). Adding a new entity to resolve the Many to Many does not solve this issue of how a printer can have, for example, a black cartridge and 3 different coloured cartridges.
Any ideas how to model this please?? I have been toiling with it for some time and I keep going round in circles :confused:
I'm sure it shouldn't be as difficult as it seems, so I'm hopeful someone might be able to set me straight :o
So all the members are realized by single columns. I created a new database, consisting of the main table, the "people" table and a relation table, connecting the people with the compartment (n:m relation).
It works great but I have to get the old data into the new tables. The old main table consists of more then 100 columns, and most of them are now hived off by using relations.
Now I'm looking for a smart solution to convert the table.
Do you have any idea? I tried to use a Query, but I couldn't merge two or more columns and put them in a single one on a new table.
Hi, I have a query with approximately 100 criteria. That is a bit much, thus I have made a table of the criteria and in the query a relation laid to this table. The criteria are countries with an increased risk on tbc. I point these query on a column with parent 1 and afterwards on the column with parent 2. Then I want the results from both query's in a table, but without double rows. I have tried this with a merge query but these only give the results where the hits for parent 1 and parent 2 are the same. This is by far not always the case, so, I miss all hits where there would be a hit for one parent only. Cumbersome tale, but perhaps there is someone who understands what I mean?
Hi! I have a table named Employee Records, with a primary key "ERName". I use this to link to a table named Certification Records, with ERName as the link in both tables. My problem is this:
When I add a new record to Employee Records table, the name is not thrown in to a new record in Certification Records. This is a problem, because in my form that uses a query that includes both tables, when I add a certification record, it doesn't populate the name field in Employee Records table. I don't know where I went wrong, but I feel stupid because this is so basic and I should have caught it earlier... any ideas, please? Thanks!
I have two tables, tblCountry and tblLocation. With the following structure
tblCountry ID Name Text
tblLocation ID Country_fk Name Text
As you can guess tblCountry lists all of the countries, tblLocation lists all of the locations in each country, the tblLocation.Country_fk field is linked to tblCountry.ID.
I want the user to be able to edit [tblLocation].[Text] using a form. They simply select the country and then the location using combo-boxes and then add or edit the content using a textbox.
In my form I have a combo-box that displays the country names, the RowSource is set to SELECT [tblCountry].[ID], [tblCountry].[Name], FROM tblCountry ORDER BY [Name];
I then have a second combo-box that lists the locations for the selected country. This uses an AfterUpdate() procedure to select [tblLocation].[ID] using an SQL query based on the value of the country combo-box. I.e:
SELECT [tblLocation].[ID],[tblLocation].[Name],[tblLocation].[Text] FROM tblLocation WHERE [Country_fk] = " & Me.country_box.Value & " Order By [Name]"
I want to be able to have a textbox that then displays [tblLocation].[Text] for the selected location. Thats where the problem arises. I can't find a way that will let me display any content thats available for the selected location AND let me edit it. I've tried using UpdateAfter procedures, different bindings (tables, queries based on the value of location combo-box).
Can anyone suggest how I can display [tblLocation].[Text] based on the value of the selected country/location and be able to update the information via a textbox?
I'm trying to set up a simple query that links four tables. However, the tables are extremely large, all in excess of 1.5GB each so I had to split the tables up into four separate DBs. I've tried the following with no success:
1) Link the 4 tables in the DB which contains my primary key. This quickly inflates increases the file size above 2GB and won't let me go any further.
2) Build a remote query to connect the four tables. This looked promising until I tried to run the query and it became evident that it only knows to point to the last database source that you specified.
I'm running everything locally on my C drive. The data source are simple text files (1.6 million rows) from the FDA website.
Well, I am facing one problem..in my application; I need to show all forms / reports name of other database( .mdb ) file without opening the other database physically. I tried a lot but didnt succeded. I tried with below code..
Set AcApl = New Access.Application Call AcApl.OpenCurrentDatabase(strfolder, True) Set AcProj = AcApl.CurrentProject
Set frm1 = AcProj.AllForms
intCount = frm1.Count
But here wen the second line AcApl.opencurrentdatabase get executed at that time the database get open physically, and i dont want that..So is there any other way around..If so..please please help me..
i have a database that runs updates from within itself.what i need is, this database to then open a another database run a update query, then close it.
I have designed a touchscreen input system using Visual Basic.net and this writes to an Access Database. Each Touchscreen has its database locally so it can still work even if there are Network problems.
Now what I would like to do is have all these local databases write to a central database say every minute but only write new records to the central database. The Central Database can either be Access or SQL.
I have been working on a database for over a month now, and my boss just threw a monkey wrench in my work. I believed that the Metal Market Prices would be entered once a week in the current DB. My boss informs me today that he wants an employee to go in every morning and enter that days Price for Each Metal with respect to many different markets.
There is a total of 12 metals, and 5 markets. I need the data to be stored first by date, then by either market or metal, and lastly by which ever isn't used second (Either: date-market-metal, or date-metal-market). I think the Latter of the two methods makes the most sense. Is it possible for my current DB to lookup values from the Metals Database based on date-metal-market?
I have a problem that seems to be happening on several users' databases and is causing a big problem. None of the databases is a shared database...they are all single-user databases on stand-alone computers. I have tried looking for help within previous posts, but all seem to be related to shared databases.
I am getting an error message: "The Microsoft Jet database engine stopped the process because you and another user are attempting to change the same data at the same time." The database cannot be opened, imported, repaired...nothing seems to work.
Again...these are NOT shared databases. I appreciate any help I can get. I created the database for all of the secretaries in our school district to keep up with absence data. It involves many tables, queries, forms and reports, and has generally worked well. However I am now seeing several that are getting similar errors as mentioned.
I'm new to Access and VBA, for the record. What I need to do is copy a SQL database (table structures and records) and save it as a local Access database, so that the user can query and make any changes on the local file without editting the SQL database.
Looking around, it seems like the best option would be to use the TransferDatabase method with the acImport option. Does this sound reasonable, or can someone with more experience suggest a better way to go about it? Thanks.
I am testing the security of my DB X on Acccess 2007. I could create a new database Y and linked to the database X. Unfortunately i could change the records on the tables. I don't want other DB that make connections to my DB to change my tables!
Is it possible to access a table in one Database (Database A) from a separate Database (Database B) and if so how. I should clarify that this is an Access Database.
I created a database with forms, querys, etc. Now I was thinking of creating a exe so everyone can use this database without having access to all the design functions.
the only problem I see about doing this is if we need to use the same database for different project, we need to always create a new exe for each project.
Is there a way to make a empty database exe with just the layout, querys etc but with no data on the tables and have a save, open and save as option. So we can have several projects using the same database?
I was thinking to create a VB code for the database to delete all data on the tables when the database is open. and before closing the database exporting all the data to a txt file or something.
Then the next time someone opens the database goes to the main form which has a open bottom which imports the txt file into the tables.
This way we can have several txt file for several project and use always the same exe database.
