i'll make a simple website. in my website i have two kind of products to sell
1. Projects
2. Documents
These Tables are available in my database :
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now i will make an order table. should i make differentt order table?
or i could save order information of both tables in one table?
I developed and entity framework (.edmx) application in 4.0 in that i got all the data of my querying table and its foreign key referenced tables data also. but when i change my project to 3.5 i am unable to get the data of foreign key referenced tables data.
View 2 Replieshow i insert,update and delete data in multiple table .such tables in which primary and foreign key constraint are
View 1 RepliesAdding data into kartlar table (RehberID,KampanyaID,BrimID) is ok. But which Kart'ID created? I need to learn which Id created after adding data (RehberID,KampanyaID,BrimID) into Kartlar?
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How can I do that? I want to get data from Kartlar which data I added?
In my databse i have a databse tables
UserRole -UserID,UserName,RoleName.
Compaign - CompaignId,Region,CompaignName,LOB.
Employee -EmpNo,EmpName,CompignId
Timesheet -TimeId,EmpNo,Date.
I dont have primary key for Compaign Table CompaignId is Identity column. Now i want to use CompaignId in Employee Table because based on compaign user will retrieve employee data in Front end. Again Employee table doesn't have primary key. I am uploading excel file data to databse but in excel file there is no empNo so i cannot use primaryKey i have EmpName in excel file. How to solve this issue. How to use master table if possible create table structure for my requirements.
I am new to sql. I got this task to design a table in sql. It has for columns user_ID(PK, FK1) , WebSite_ID (PK, FK2), Create_Dt, Update_Dt How do I create PK and Fk1 and PK FK2 in sql server 2008 R2
View 3 RepliesI need ms sql video, in which i can learn how to set primary and foreign key.. why it useful and how it works...
View 3 RepliesI have two tables. Product_Table with ProductID as the primary key. My other table, ProductSKU_Table which has SKU as the primary key and ProductID as the foreign key. I am trying to create a store procedure to insert into both tables. How do I insert the primary key from the Product_Table into the foreign key of the ProductSKU_Table? This is what I have so far:
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Just looking through database design and wondering what would be the better option. I have customers, who all have orders, pickings, deliveries and invoices. Now an invoice can't exist without a delivery, a delivery can't exist without a picking and a picking can't exist without an order. So I could set the tables up in a linear fashion. e.g.
Customer -> Orders -> Picking -> Delivery -> Invoice
then in Orders, there would be an ID field, with a customerID field and in Picking, there would be an ID field, with an orderID field and in Delivery, there would be an ID field, with pickingID and in Invoice, there would be an deliveryID field. Linking them altogether, again, in a 'linear' fashion.
The problem is if I want to get, say, all the invoices for a specific customer, my query would be something like
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My other option would be to have in a customerID column in each of the tables meaning a much easier query
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I have four tables namely tblStudent, tblParent, tblEmployee and tblUnwantedVisitor.
tblUnwantedVisitor should get the primary key from the three tables, which is the visitor ID, tblStudent visitor ID starts from 10000, tblEmployee from 20000 and tblEmployee from 30000.
I used foreign key from one to one table only, so I don't know if my approach for the database is wrong or foreign key for multiple tables, which is somehow unlikely, is necessary.
I am accessing rows in an SQL database table based upon the contents of 2 Primary key columns. But, I cannot insert new rows in the table when the content in one of the new Primary key columns already exists in another row. I get an error message that says: "Violation of PRIMARY KEY constraint 'PK_ReferendumVoters'. Cannot insert duplicate key in object 'dbo.ReferendumVoters'. The statement has been terminated."
The reason why this error is occurring is because I first stored "Referendum 1" in one column along with "me" in the second column of a new row for a "ReferendumVoters" table. Then, I attempted to insert a new row with the same "Referendum 1" string in the first column along with a different name in the second column. But, it will not let me do this even though I created a new index that defines the two columns as unique. Is there any way that will enable me to do this?
I have an MVC3 with EF4 project. I have a screen for order .Order has 2 id's inside it for Billilng and Shipping AddressID .When I go and create a new order these fields render as single textboxes as Ids'Question is how can I render full address textboxes (addressline1,city,state,zip etc) do I have drop in the html markup for them? In that case while capturing the data back I willl have to go with classic way of retrieving name/value pair and then do insert into address bring back that identity and update the order record...?
Create(int customerID,FormCollection fc){}
So the main question is how can I do ModelBinding with foreign keys?
I'm getting up to speed with MVC. In all examples that I find, the database tables always seem to have a single autoincrement column as the key. Is this the standard for DB Design when the intent is to use MVC or can MVC cope with compound primary keys that dont necassarily have autoincrement?
Typical DB Design:
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It's just that obviously in the real world many companies already have a good DB design populated with data based on the classic design style. If I get clients contemplating updating their applications and want to use the MVC framework, will they also need to consider the redesign of the DB?
If MVC can cope with compound key's are there any good examples. I thought that by using binding exclude/include that compound keys are possible, but it wasn't clear to me.
I am using Access 2003 Database and I need to retrieve list of a table's foreign keys and tables they are related to in C#. I used GetSchema() function of OleDbConnection as well as OdbcConnection classes. But It just returns the name of key among few other details.
OdbcConnection con = new OdbcConnection(conStr);
I am developing asp.net MVC3 application and I have following entity
This entity has composite key (CreditRegistryId and Accoubnt No are primary keys). CreditRegistryId is a foreign key as well. How can I make composite key and foreign key. I am using DbContext API from EF 4.1. I am not using edmx ( ORM designer)
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I have an EF model with a table with several foreign keys. These foreign keys are managed by associations. In code, I can get a strongly typed list of objects when I access that property on the object.
When I generate a strongly typed view, all I see are the int fields. Is there a way to get ASP.NET MVC to bind to the objects that are related as well as the main object?
I just came across some code that seems to encrypt database keys prior to sending them to the client (WebBrowser, Silverlight, etc).
To illustrate, suppose you have a list of students to extra-curricular activities, and a relationship defined between them. Every time the data is written out to the ASPX page, the studentID and activityID is encrypted. Every time a write, or modify is made, this value is sent back to the server, decrypted, and saved to the database.
What could be the reasons to expose data this way? Is this a normal practice?
I am having trouble with foreign keys Dynamic Data and entity framework 4.0. It feels like there is a problem with the entity association but I am not sure. I have multiple fields representing the foreign key on the insert page.
When I try and insert data I get an error A dependent property in a ReferentialConstraint is mapped to a store-generated column.
Column: 'CommentId'
My data is a very basic one to many relationship, the foreign key in question is BookId in the Comment Table.
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When I let the scaffolding do its thing, I get multiple fields representing the foreign key.
how to handle foreign keys with Entity Framework, when editing or adding a new record. For example, I have a person table, which has a timezone_id linking to my timezone table.
But the model seems to not include timezone_id. I see it's a new way of doing things, but ... how do I store my record?
My method:
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I can't do u.timezone_id = timezoneid;
I only have u.timezone (which seems to be the actual entity), and u.timezoneReference, which I am not sure what to do with.
I have two tables customers and sales . I have a formview that inserts to customers (new customers). I want every time I insert a new customer automatically redirect to another page where I will make a sale. On table sales I have a column CustomerID which I want to automatically take the auto numbered CustomerID from Customers table.
View 2 RepliesI have the following tables in my database which are as given under:
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My requirement is instead of getting the PromotionID values displayed for columns CustomerPromotionDiscountID & EmployeePromotionDiscountID, it should display the respective DiscountAmount. Which is not happenning for some reason.
I somehow found a workaround where if i define the datatype for columns CustomerPromotionDiscountID and EmployeePromotionDiscountID as nchar or nvarchar, it displays the DiscountAmount.
Wanted to know if there is any better way of doing this without changing the datatype for my columns?
If i create all of the foreign keys in my sql database and I create a linq to sql item in my project the linqs show on the diagram.
Does this mean that i dont need to create joins in my linq query in my c# code? so i mean my quesry would look something like this
[Code]....
instead of
[Code]....
Cannot seem to find a good fit for my question so I will ask here.
Does Asp.Net 4.0 solve the problems with using Views with EntityFramework is not able to recognize primary keys.
I have started my new mvc project with entity framework,Must say it is very diffcult to work with entity framework.
"I am trying to create new custom entity in .edmx file,Now i have made one column as Entity key,Which is already entity key another entity set."
"Error 3033: Problem in Mapping Fragment starting at line 3081: EntitySets 'Entityset name' and 'Entityset name' are both mapped to table 'Entityset name'. Their Primary Keys may collide."
I have the code below:
SqlConnection sqlConnection = new SqlConnection(selectedConnStr);
sqlConnection.Open();
SqlCommand sqlCommand = new SqlCommand("SELECT * FROM " + tableName, sqlConnection);
schema = sqlCommand.ExecuteReader(CommandBehavior.CloseConnection).GetSchemaTable();
Just want to know how can I get the foreign keys from schema?