[Tutor] Creating and storing objects from a GUI...

Thu, 21 Feb 2002 07:21:04 -0800

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Hello there Tutor List.

I'm in the midst of designing a program that will be creating new instances
of a number of classes and then storing that information somehow.  I'm in a
little bit of a quandary as to how I should go about this.  There are so
many options!  I'm still rather inexperienced at this sort of thing so I'm
having a tough time knowing the "right" way to do a number of things.  I
know that "right" is rather subjective based on one's needs, but if anyone
has any "more right than wrong" sorts of answers, I would be most
appreciative.

I'd like to display the information in a variety of ways, and I'd like to be
able to do searches, and queries in a variety of ways, so I'm thinking that
XML saved in a Database of some sorts might be nice, but would it just be
simpler and take up less space to save things off in plain text format, or
even pickle the objects I create?  

What are the benefits of using the ZODB over a relational DB like
PostgreSQL, or MySQL?
This program is expected to retain records of transactions and appointments
for quite a long time and the sheer volume of them may get up there in size
over time.  If my little program doesn't cut it in the end, I'd still like
to be able to easily migrate the date elsewhere.

What choices have you made in situations like these?

Thanks,

~Israel~

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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hello there Tutor List.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

I'm in the midst of designing a program that will be
creating new instances of a number of classes and then storing that =
information
somehow. &nbsp;I'm in a little =
bit
of a quandary as to how I should go about this.&nbsp; There are so many =
options!&nbsp; I'm still rather inexperienced =
at
this sort of thing so I'm having a tough time knowing the "right"
way to do a number of things.&nbsp; =
I
know that "right" is rather subjective based on one's needs,
but if anyone has any "more right than wrong" sorts of answers, I
would be most appreciative.<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

I'd like to display the information in a variety of
ways, and I'd like to be able to do searches, and queries in a variety =
of
ways, so I'm thinking that XML saved in a Database of some sorts might =
be
nice, but would it just be simpler and take up less space to save =
things off in
plain text format, or even pickle the objects I create? &nbsp;<o:p></o:p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>What are the benefits of using the ZODB over a =
relational DB
like PostgreSQL, or MySQL?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>This program is expected to retain records of =
transactions
and appointments for quite a long time and the sheer volume of them may =
get up
there in size over time.<span style=3D'mso-spacerun:yes'>&nbsp; =
</span>If my
little program doesn't cut it in the end, I'd still like to be able
to easily migrate the date elsewhere.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>What choices have you made in situations like =
these?<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt;mso-no-proof:yes'>Thanks,<o:p></o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt;mso-no-proof:yes'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoAutoSig><font size=3D2 face=3D"Courier New"><span =
style=3D'font-size:
10.0pt;font-family:"Courier =
New";mso-no-proof:yes'>~</span></font><st1:country-region><st1:place><fo=
nt
  size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier New";
  =
mso-no-proof:yes'>Israel</span></font></st1:place></st1:country-region><=
font
size=3D2 face=3D"Courier New"><span =
style=3D'font-size:10.0pt;font-family:"Courier New";
mso-no-proof:yes'>~<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

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