Re: Advice required for cascading vertical menu.

Message-ID: <lj58o15j3ore714olbl37k7an3qcpq5lnp@xxxxxxxxxxxxxxxxxxxxxx>
from Mark Goodge contained the following:

>>One of my lecturers used to say that there was nothing 'structured'
>>about SQL and that therefore Structured Query Language made no sense.
>
>It depends how you parse it. "Structured Query Language" can either
>mean a query language that is structured, or a languge for creating
>structured queries. SQL may not be the former, but it certainly is the
>latter.

It's a language for creating queries. Therefore it's a query language.
>
>>Of course the original came from Structured English Query Language which
>>is at least a little more logical.
>
>That's arguable; read the Wikipedia discussion page on SQL where there
>is much disagreement on the original source.

I haven't seen the discussion page but the wiki entry is clear enough:

A seminal paper, "A Relational Model of Data for Large Shared Data
Banks", by Dr. Edgar F. Codd, was published in June, 1970 in the
Association for Computing Machinery (ACM) journal, Communications of the
ACM. Codd's model became widely accepted as the definitive model for
relational database management systems (RDBMS).

During the 1970s, a group at IBM's San Jose research center developed a
database system "System R" based upon Codd's model. Structured English
Query Language ("SEQUEL") was designed to manipulate and retrieve data
stored in System R. The acronym SEQUEL was later condensed to SQL due to
a trademark dispute (the word 'SEQUEL' was held as a trademark by the
Hawker-Siddeley aircraft company of the UK). It should be noted that
although SQL was influenced by Dr. Codd's work, it was not designed by
Dr. Codd himself; the SEQUEL language design was due to Donald D.
Chamberlin and Raymond F. Boyce at IBM.[1], and their concepts were
published to increase interest in SQL.


--
Geoff Berrow 0110001001101100010000000110
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100110001101101111001011100111010101101011
.

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