SQL 2005: Creating Custom Primary Key

Mar 27, 2008

Hello everyone!

Even though I am not "new to SQL Server", my experience in working with it has ebbed and flowed, and working with SQL Server is not something that happens for me even on a monthly basis.

I work as an in-house programmer for a financial investment company and I have been asked to work on a database that is to hold financial data.

One of the requirements for the tables has been that the Primary Key should be [name_of_the_table] + [Identity].

So, for example, for table "tblEquities", the values of the Primary Key would be:

PK
-------
tblEquities1
tblEquities2
tblEquities3
tblEquities4
tblEquities5


My questions are:
1) Is it possible to achieve this by using just one column, as in defining a formula for the "Computed Column Specification" , something that would look like "'tblEquities' + Identity()"?
2) If the above is not possible, I assume it's much easier to just define a column as being Identity column and then create a 2nd computed column that would aggregate the name of the table with the value in the Identity column, so that I end up with a column holding the desired values? (I guess it would look something like
"'tblEquities' + [Identity]")

Also, I have been asked to find out what SQL 2005 have/offers, in term of guaranteeing referential integrity. Are the "Database Diagram", as well as the "Relationships" dialog box, the tools that would meet that criteria or does SQL 2005 contain other tools that would help in this regard?

Thank you!

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