In a relational database, if a node in an object graph is deleted, how can the object graph's referential integrity be maintained? For example: A product is deleted, how is the invoice containing ...
How should an object that can reference an object of multiple types be modeled in a relational schema?
Apologies for the obscure question, it may make more sense with a concrete example: In my application, I may create a portfolio that contains a set of projects. However, I may also add a ...
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 ...
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 ...
For example, with a table similar to this: create table foo(bar int identity, chk char(1) check (chk in('Y', 'N'))); It doesn't matter if the flag is implemented as a char(1), a bit or whatever. I ...
I am looking for (preferably) an SQL statement that selects the table/and column names for any table with a foreign key to a given table in Sybase. I think it should be somehow possible with the ...