I'm building an application that tracks courses and equivalent courses. For example, say I have course A which a user should get credit for if they have taken equivalent courses. So if a user has taken (course B or course C) AND (course D or course E) he should get credit for Course A. What's the best way to setup a SQL table to create these type of equivalent relationships?
View 9 RepliesI have spend days researching this and found others with the exact same
problem but there are no useful replies as people don't seem to
understand our problem. Please read this carefully...
What is the best way to create relationships between new SQL tables? For example, say I want to create a new database with tables for Customer, Orders and Details, how to I relate these tables?
- Edit via the Dataset designer in Visual Studio 2005?
- Use the Server Explorer's Table designer in Visual Studio? (not sure how to use the 'relationship' icon)
- Use SQL Server Managment Studio Express (SSMSE) Database Diagram
- Something else?
I am using Visual Studio 2005 Standard and SQL Server 2005 Express (SP1).
I created a new database in Visual Studio's Server Explorer and then used the Table Designer to create two new Tables (Customers and Orders). I then assigned primary keys but I don't know the best way to relate the tables.
If I create and edit a new dataset, I can graphically drag a relationship between the tables. HOWEVER, this relationship isn't recognized by SQL Server Management Studio Express (SSMSE). I found this out when I tried to create a database diagram, none of the relationships appear in SQL?! This would cause problems when I want to deploy the database to my client.
If however, I START in SSMSE and create the tables there, then open a Database Diagram in SSMSE and graphically link the tables, then Visual Studio will see all the relationships.
I thought it was supposed to be a seamless integration between Visual Studio 2005 and SQL Server 2005. Am I missing something?
Richard
In oracle we can create table like
CREATE TBALE AS SELECt * FROM TAB1
How can I do this in SQL Server. I want to craete table on basis of following staement.
select * from t1 inner join t2 on i1.id=t2.id
Thanks in advance.
I am using Northwind database to Create a view showing every order that was shipped to Spain. Name the destination column 'DestinationSpain'. Include code that checks if the view already exists. If it does, it should be dropped and re-created.
Here is my script:
use Northwind
GO
/*STEP 2, #1*/
/* does it exist, if so drop it */
if exist (select * from dbo.sysobjects
where id = object_id(N'[dbo].[OrdersToSpain]') and OBJECTPROPERTY(id, N'IsView') = 1)
drop view [dbo].[OrdersToSpain]
GO
/* Create the View */
create view "OrdersToSpain" AS
SELECT
Orders.OrderID AS Order_ID,
Orders.CustomerID AS Customer_ID,
Orders.OrderDate AS Ordered_Date.
Orders.ShippedDate AS Shipped_Date,
Orders.ShipCountry AS DestinationSpain
FROM Customers INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID
WHERE Orders.ShipCounty LIKE '%SPAIN%'
GO
Here are the errors I am getting:
Server: Msg 156, Level 15, State 1, Line 5
Incorrect syntax near the keyword 'select'.
Server: Msg 170, Level 15, State 1, Line 6
Line 6: Incorrect syntax near ')'.
Server: Msg 170, Level 15, State 1, Procedure OrdersToSpain, Line 7
Line 7: Incorrect syntax near '.'.
Hello,
I've created a database in VS2005 for my mobile app, but I can't figure out how to establish the table relationships. I'm not new to databases, but I'm new to VS. Any help is appreciated.
Thanks,
Here is the alter statement that I am trying to use to create a relationship between 2 tables. This does not seem to work on mobile. What am I doing wrong?
ALTER TABLE [SubCategory] CONSTRAINT [FK_SubCategory_Category] FOREIGN KEY([CategoryID])
REFERENCES [Category] ([CategoryID])
ON UPDATE CASCADE
ON DELETE CASCADE
Hi
We need to keep track of all changes that are made to our tables.
The changes will be saved in a table that records:
- the table in which the change was made
- the name of the field that was changed
- the old data for the field
- the new data for the field etc..
I've seen a few examples that record the name of the table that was
modified but none that record done to the field level.
Can anybody give some guidance?
Thanks..
Wayne
Hi, we are almost finished developing our database and we have a table we want to monitor because it is getting information deleted from it
and it has a delete trigger on it but we want to track the changes to
the table and were wondering how to track specific changes to a user database?
We want to see who is making the change, what the change they are making is and also what is the time they are making it. I have used
SELECT * FROM SYSPROCESSES
and I am running SQL TRACE with filter on MS SQLEW, and MS TRANS, and
Visual Basic with SQL statements on tblRoute,( the table that I want to monitor) and I want to know if there is any other way to monitor this table more closely?
Hi
anyone please help!
I have created the database driven web application with asp.net and sql server 2000. now I want keep track three operation(insert, updata and delete) that have been made on tables in a SQL Server 2000 database. what i did is:
1, create a audit table with columns: auditTable, actions, actionUser, actionTime
2, create three trigger(insert, update and delect respectivily) for every table
my problem is that i can not get right user name. I use form authentication and i stored user login information in the database. every time, no matter who is logining to the web application, the action user is always SA. I user user-name() function to get userName(actionUser).
Please anyone can help me to get current login user name, or tell the best way to track operations on a table.
Thanks
jili
My company would like to start keeping track of everytime a table, stored procedure, or function is changed.
What is the best way to do this?
Hi,
I am looking to track any changes made to any table within a db into a single audit table which will hold as fields: the table that has been updated/inserted, the field that was changed, its primary key, the old value and the new value specific to that field, and the date it was updated/inserted.
From what I have read, it does not look like this is possible with a trigger on table as it is not row specific and that I might have to control this from the business layer (vb.net). I am correct in this assumption, or is there a way of tracking specific data changes through triggers.
thanks
Welly
Working on a "social networking site" and would like to have something that records a member's interactions within the site.So for instance if a member uploads a photo, I would like to record it and then display it as "[Member] added photo" with a link to the photo. Also, if a friend is accepted as a friend "[Member1] is now friends with [Member2]" and also if a member posts a comment on the forums "[Member] posted message in [ForumName]" with link to post.This is very similar to Facebook's News Feeds and MySpace Friend Updates.The only way I can think of having this is having an Activity table with a field for each different Id I want to record and an associated list of tracked Actions:Activity:idmemberIdactionTypePhotoIdMember2IdForumIdThen there would be the ActionType tableactionIdNameThe biggest problem I see with this solution is that I would need to add a new field in the Activity table for each different type of activity I would like to track. This could get pretty big as I begin to track more and more activity items.Is there some way I can generalize this. - Andy
View 2 Replies View RelatedI have a specific requirement. I need to insert the DML statements executed from Management Studio into a SQL table. We have SQL Server 2008 R2 and 2012 instances.
View 8 Replies View RelatedI would like to know about the DML process (Insert/update /delete) in a particular table .. it is like change tracking but I also want to know the modification date
I know CDC ( Change data capture ) but unfortunately it needs SQL 2008 developer/enterprise edition and my SQL server is SQL 2008 STANDARD edition.
Hi,Does anyone have any suggestions on the best to go about enforcing arelationship between two tables that exist within separate databaseson the same SQL Server instance.
View 7 Replies View RelatedI have the tables tblEmployees and tblProjects.tblProjects has one column called Percentagetime, to hold the percentage oftime by an employee for a project.My Question : Why should we introduce a 3rd table calledtblProjectsAndEmployees?tblProjectsAndEmployees will have1)EmployeeNumber(PrimaryKey in tblEmployees)2)ProjectNumber(Primary key in tblProjects)3)PercentageTimeHaving only the tblEmployees and tblProjects is not sufficient?Kind Regards,Vinodh Kumar P
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Hi,
I'm working on a database for which I require to have a lot of relations from my Persons table to other tables. I will need my primary key in those other tables: about 10 to 15 tables, to be able to relate to my persons data.
I believe this means I have 10 to 15 clustered indexes on this table.
Is this the right way of working? I know too many of this relations to other tables will have impact on performance concerning insert and updates.
But I noticed in the adventureworks example it works just this way for the products table.
What is the max limit of this kind of relations? (for reasonably good performance)
Should I use triggers instead? - for those with the least user interaction?
Thanks in advance,
Mike
Hello,
I am looking to print the table structure of a Microsoft SQL Server 7 database through the Enterprise Manager Utility. I would like to print it to a plotter but the print options in the Enterprise Manager are inadequate. I believe I will need to use another program to manipulate the object prior to plot due to its size. I have the following tools available:
VB6
Autocad
(Do not have Adobe Writer)
Is there a way to get this print object to Autocad or even as a bitmap?
Thanks is advance,
bds
What is the iso sql query to get the relationships between all tables in a db?
View 4 Replies View RelatedI am trying to update 2 tables at the same time by adding new records to them and then making sure that they are related on my junction table?
Table1
packageID
Packagename
Table2 (JunctionTable)
PackageID
JobID
Table3
JobID
JobName
And I want to create a new package and new Job Name at the same time I would need to make multiple insert statements
First take care of the new Package
INSERT INTO Table1 (PackageName) Value (@PackageName)
Then Take Care of the JobName
INSERT INTO Table3 (JobName) Value (@JobName)
Finally marry the two together
but how?
Can I programatically access all relationships for a sql table? I know i can do this in the table designer ...
---Jim
:eek: =>First ,2nd ,3rd normalization
=>Data Integrity
=>Mappings-
1 1:1 mappings
2 1:2 mappings
3 Many :MAny mappings
=>Establish relationship
1.Simple
2.Complex
3. Multiple
Defination of these all or details with subjects also
pls reply me soon
it is urgent for me
thanks in advance
What is the best way to setup relationships between one lookup tableand many other tables. The tables did not have any lookup tablerelationships which I am adding. One lookup table is used for same datain several different places.To use one lookup tables with several tables, I had to disable "CascadeUpdate" and only have "enforce relationships for updates and inserts"checked.Any pros/cons?Thanks in advance.P
View 1 Replies View RelatedHello,I want to be able to view data from 3 tables using the JOIN statement, butI'm not sure of how to do it. I think i don't know the syntax of the joins.Iimagine this is easy for the experienced - but Im not.Allow me to explain:I have 2 Tables: PERSON and SIGNPERSON------PersonNo int (Primary Key)Name varchar(50)StarSign intFavFood intSIGN----StarSign int (Primary Key)StarSignName varchar(50)Relationship: SIGN has a one-to-many relationship with PERSON. The linkingfield is called 'StarSign'.Question 1:I want to display all the peoples names, and their star sign (whether theyhave one or not).Answer 1:SELECT PERSON.Name, SIGN.StarSignNameFROM PERSON LEFT OUTER JOIN SIGN ON PERSON.StarSign = SIGN.StarSign;No problems there. But now I want to do the same thing, but have theirfavourite food displayed as well. So an additional table is needed:FOOD----FavFood int (Primary Key)FavFoodName varchar(50)Relationship: FOOD has a one-to-many relationship with PERSON. The linkingfield is called 'FavFood'.Question 2:I want to display all the peoples names, their star signs (whether theyhave one or not), and their favourite food (whether they have one or not).Answer 1:???I'm not sure what to do. Notice that I want to use an LEFT OUTER JOIN so ALLthe rows from table PERSON will appear 'irrespective' of whether they haverelated records in the other tables.Jack.
View 3 Replies View RelatedI am jus migrating my oracle set up to sql server. I have oracle tables with my own object types. Is there any equivalent in SQL Server tables.
Any advice/suggestions would be gratefully received.
-Sam
Hi,
I'm looking for a query I can use to alter table relationships. What I want to do in particular, is to set every relationship to cascade on update. Can anyone point me out to a solution? MSDN seems very vague in this subject.
Thanks,
Tiago
I'm using Sql Server 2012 Enterprise and have a database with over 400 tables. I am looking at one diagram which contains about 20 (or so) tables and their relationships. When I right-click on a relationship line I only see information about which tables are connected on that line but not on which fields. Can I get that information from the Diagram or can I only get that from the sys tables?
View 2 Replies View Relatedis there a command in ms sql server 2000 equivalent to this oracle table copy command?
create table myTable_bak as select * from myTable;
Hello all,
Please help....
I have a text file which needs to be created into a table (let's call it DataFile table). For now I'm just doing the manual DTS to import the txt into SQL server to create the table, which works. But here's my problem....
I need to extract data from DataFile table, here's my query:
select * from dbo.DataFile
where DF_SC_Case_Nbr not like '0000%';
Then I need to create a new table for the extracted data, let's call it ExtractedDataFile. But I don't know how to create a new table and insert the data I selected above into the new one.
Also, can the extraction and the creation of new table be done in just one stored procedure? or is there any other way of doing all this (including the importation of the text file)?
Any help would be highly appreciated.
Thanks in advance.
Hello again,
I'm going through my tables and rewriting them so that I can create relationship-based constraints and create foreign keys among my tables. I didn't have a problem with a few of the tables but I seem to have come across a slightly confusing hiccup.
Here's the query for my Classes table:
Code:
CREATE TABLE Classes
(
class_id
INT
IDENTITY
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
class_title
VARCHAR(50)
NOT NULL,
class_grade
SMALLINT
NOT NULL
DEFAULT 6,
class_tardies
SMALLINT
NOT NULL
DEFAULT 0,
class_absences
SMALLINT
NOT NULL
DEFAULT 0,
CONSTRAINT Teacher_instructs_ClassFKIndex1 FOREIGN KEY (teacher_id)
REFERENCES Users (user_id)
)
This statement runs without problems and I Create the relationship with my Users table just fine, having renamed it to teacher_id. I have a 1:n relationship between users and tables AND an n:m relationship because a user can be a student or a teacher, the difference is one field, user_type, which denotes what type of user a person is. In any case, the relationship that's 1:n from users to classes is that of the teacher instructing the class. The problem exists when I run my query for the intermediary table between the class and the gradebook:
Code:
CREATE TABLE Classes_have_Grades
(
class_id
INT
PRIMARY KEY
NOT NULL,
teacher_id
INT
NOT NULL,
grade_id
INT
NOT NULL,
CONSTRAINT Grades_for_ClassesFKIndex1 FOREIGN KEY (grade_id)
REFERENCES Grades (grade_id),
CONSTRAINT Classes_have_gradesFKIndex2 FOREIGN KEY (class_id, teacher_id)
REFERENCES Classes (class_id, teacher_id)
)
Query Analyzer spits out: Quote: Originally Posted by Query Analyzer There are no primary or candidate keys in the referenced table 'Classes' that match the referencing column list in the foreign key 'Classes_have_gradesFKIndex2'. Now, I know in SQL Server 2000 you can only have one primary key. Does that mean I can have a multi-columned Primary key (which is in fact what I would like) or does that mean that just one field can be a primary key and that a table can have only the one primary key?
In addition, what is a "candidate" key? Will making the other fields "Candidate" keys solve my problem?
Thank you for your assistance.
Hi All,
I'm trying to create a proc for granting permission for developer, but I tried many times, still couldn't get successful, someone can help me? The original statement is:
Create PROC dbo.GrantPermission
@user1 varchar(50)
as
Grant create table to @user1
go
Grant create view to @user1
go
Grant create Procedure to @user1
Go
Thanks Guys.
the subject pretty much says it all, I want to be able to do the following in in VB.net code):
{[If [table with this name] already exists [in this sql database] then [ don't create another one] else [create it and populate it with these values]}
How would I do this?
Can I dynamically (from a stored procedure) generatea create table script of all tables in a given database (with defaults etc)a create view script of all viewsa create function script of all functionsa create index script of all indexes.(The result will be 4 scripts)Arno de Jong,The Netherlands.
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