Re: An object-oriented network DBMS from relational DBMS point of view
Date: 19 Mar 2007 00:56:14 -0700
Message-ID: <1174290974.569505.235280_at_l77g2000hsb.googlegroups.com>
On 19 mar, 03:08, "Marshall" <marshall.spi..._at_gmail.com> wrote:
> In what way is that not well-defined? "A legal entity is either
It does not specify whether the instance is a value or a variable.
In the book, class is a kind of type, so object could mean value, but
it also says:
"The reference values (often just references) are pointers to these
objects"
You can not point to a value.
> a person or a corporation." No problem.
"A class instance is explicitly created by a class instance creation expression"
A class instance creation expression creates a variable. Values canīt be created.
So it is clear that some objets are variables, but what about the
values
holded by the variables?
Alfredo Received on Mon Mar 19 2007 - 08:56:14 CET