Re: [HACKERS] Re: ORDBMS

Tom Lane wrote:

> Hmm.  This looks like a CREATE TABLE implicitly creates a datatype
> that acts more or less like a C 'struct' declaration, ie, it's just a
> collection of subfields.  OK, a struct-making declaration is certainly
> useful.  What I don't understand yet is whether the contents of table
> "address" have any connection to the data stored in table "person".
> If not, why must I create a table in order to define a datatype?  Seems
> like a separate CREATE DATATYPE command would make more sense...

I think the idea is like in C++ if you create a 
class Address {
...
}

and a class
class Person {Address address;
}

Then you can create both standalone Addresses as well as addresses
embedded
inside the Person.

CREATE DATATYPE might be a thought, but it's probably not very
essential.