RE: Graphical modelling

2001-03-22 Thread Mark Chalkley

I tried half a dozen or so different ones a while back and settled on CASEStudio, 
www.casestudio.com.

Mark Chalkley
Beneficial Systems, Inc.

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On 3/22/2001 at 3:35 PM claire csoka wrote:

Dezign looks useful, but does anybody know any others - then
I'll stop bugging you all.

Thanks in advance,

Claire.


From: "Cal Evans" [EMAIL PROTECTED]
To: "claire csoka" [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: RE: Graphical modelling
Date: Thu, 22 Mar 2001 08:59:59 -0600

http://www.mysql.com/documentation/dezign/index.html

There are several other tools available but I don't remember them off the
top of my head.

Cal
http://www.calevans.com


-Original Message-
From: claire csoka [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 22, 2001 8:35 AM
To: [EMAIL PROTECTED]
Subject: Graphical modelling


Hi,

I'm new to the list so please excuse my ignorance!

Does anybody know of any graphical ways of modelling
the tables, keys, relationships etc which will then
automatically generate the appropriate database?

I'm looking at RAD with a MySQL back end.

Thanks

Claire.
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Re: Trojan Horse Virus in MySQL?

2001-03-21 Thread Mark Chalkley

I just dl'ed the file from mysql.com and checked it with a current version of Symantec 
AntiVirus with the latest virus definitions.  Result:  No viruses.

Mark Chalkley


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Sample .cnf files

2001-02-27 Thread Mark Chalkley

Can anyone tell me where I can download the sample .cnf configuration files mentioned 
in the documentation.  I downloaded the Win32 source package (I paid for a license) 
and they're not in it.  Are they only in the Unix source package or are they somewhere 
else?

Or, perhaps, if someone has a copy of them they could email me, I'd be grateful.

Thanks,

Mark Chalkley


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Re: Sample .cnf files

2001-02-27 Thread Mark Chalkley

Nope, not that I could find.  I've deleted it, already, but I searched for *.cnf and 
came up with a couple of files, but they were sample db specific.

Mark

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On 2/27/2001 at 11:44 AM Jeremy D. Zawodny wrote:

Really? Is there no "support-files" subdirectory (or something
similar) as their is on the Unix side of things?

Jeremy
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Re: Index Usage weirdness

2001-02-25 Thread Mark Chalkley

I got to wondering about that after your question about how many rows were there.  I 
was just playing with a test copy of the db, preparing to set the log options on the 
production one, and noticed that.  I rummaged around in the .pdf version of the manual 
for over an hour before posting the question.  Obviously, I missed it.  Maybe I 
should've gone to bed earlier instead.

It certainly makes sense for MySQL not to use the index in that case, of course.

As for me, it's another situation of:  If you're gonna train a dog, it helps to be 
smarter than the dog.

Thanks!

Mark Chalkley

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On 2/25/2001 at 12:30 AM Jeremy D. Zawodny wrote:

MySQL won't use an index on tables with so few rows. It is simply
faster to scan the whole table. As you tables grow, however, MySQL
will begin to use the indexes.

This is documented in the manual (though maybe not with hard numbers).

Jeremy



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Index Usage weirdness

2001-02-24 Thread Mark Chalkley

I have a question about index usage.  I've got a query that's showing up in the -slow 
log (it's taking less than long_query_time seconds, but I've got --log-long-format 
set), indicating that it's not using an index, and I don't understand why.

Given two tables:

CREATE TABLE c1 (id INT(8) NOT NULL UNIQUE, txt VARCHAR (10) NOT NULL UNIQUE, PRIMARY 
KEY (id) );
CREATE TABLE c2 (id INT(8) NOT NULL UNIQUE, PRIMARY KEY (id) );
CREATE UNIQUE INDEX c1_txt_idx ON c1 (txt);

And the query:

SELECT * FROM c1, c2 WHERE c1.id=c2.id ORDER BY c1.txt;

Now, the question:

Why is this query showing up in the -slow log?

Thanks,

Mark Chalkley


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Re: Index Usage weirdness

2001-02-24 Thread Mark Chalkley

At this point, there's only 1 row in companies, and 8 in contacts.

table   typepossible_keys   key key_len ref rowsExtra
companies   system  PRIMARY,comp_id 1   Using filesort
contactsALL cont_comp_id_idx8  
 where used

The query that produced the above is:

EXPLAIN select * from contacts, companies where contacts.comp_id=companies.comp_id
order by contacts.short_name;

Mark Chalkley


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RE: Data modeling tool

2001-02-11 Thread Mark Chalkley

I agree that a time-limited, but otherwise fully functional demo is better, especially 
in the case (pardon the pun) of database modelling.  It would certainly be worth 
sending them a message telling them so.  You never know - they might agree with you.

Mark Chalkley



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Re: Data modeling tool

2001-02-10 Thread Mark Chalkley

I haven't tried ERWin, but CASE Studio (www.casestudio.com) is extremely good, offers 
a trial download, and does support MySQL.

Mark Chalkleyi


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Win mysqlc client anomaly - 2nd request

2001-02-01 Thread Mark Chalkley

Does anyone know why the Windows version of mysqlc (the command line client with 
READLINE support) doesn't support the SOURCE command?

Thanks,

Mark Chalkley


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