Tagged Questions

5
votes
2answers
82 views

Relationship that are optionally more specific

Forgive my title, I couldn't think of anything that accurately describes what I'm talking about. I currently have the following relationship. CREATE TABLE Events ( ID INT IDENTITY(1,1) NOT ...
2
votes
1answer
147 views

Representation of circular references constraint

We have a database where we store commands and properties for devices that may be controlled via a network. For instance, "Concrete Device" is an instance of some DeviceType, which in turn contains ...
2
votes
1answer
77 views

Relationship with a default value

Firstly, I know my title is somewhat misleading, but I couldn't think of a better title. Here is my current relationship CREATE TABLE Events ( ID INT IDENTITY(1,1) NOT NULL, Name ...
2
votes
2answers
710 views

Do I need a separate Id column for this “mapping” table?

I have a table of Producers and a table of Products, both of which are of the form: Id - int, Primary key Name - nvarchar A Producer can carry multiple Products, so I was going to create a table ...
2
votes
3answers
333 views

SQL Server 2008r2 replication from multiple sources

I am currently rearchitecting an application so that each of seven businesses will have there own "live" SQL Server 2008 database and at scheduled times during the data the data from all seven ...
2
votes
2answers
468 views

How to select a subset of data from a large ER model?

I have a quite large ER model in my database and lots of data. Now I would like to take a subset of this data into a different database for testing purposes. The problem is how to get a subset from ...