Re: Abstract Data Types

From: Jan Hidders <hidders_at_REMOVE.THIS.win.tue.nl>
Date: 21 Apr 2001 13:50:52 GMT
Message-ID: <9bs37s$p2v$1@news.tue.nl>

Robert Schiller wrote:
> In the article Thirty Years of Relational: Extending the Relational
> Model by C.J. Date, Date talks about ADTs. What does he mean by
> abstract data types in the context of the relational model?

Anything that can be described in terms of the operations that are allowed upon it and has some kind of user readable representation. This includes things like numbers, dates and strings but also more complex things like lists, stacks and ... <drum roll> ... relations.

-- 
  Jan Hidders

Received on Sat Apr 21 2001 - 08:50:52 CDT