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XML question - DPaul - Mar-18-2020
Hi,
I'm just being curious
When i program with an xml database, i can e.g. add a new "record",
and even add a new field to existing records in the database etc.(using elementTree)
It strikes me that during those operations you never say something like
"save" or "additem", or...
Only a the very end one does a tree.write(...),
and that (probably) overwrites the existing xml file.
My question: you start by reading the existing xml (db = ET.parse('members.xml')
and this keeps the whole thing in memory until the moment that you do tree.write?
I can imagine issues when the computer crashes.
So, is it best proctice to do multiple tree.write()s during operations?
thx,
Paul
RE: XML question - buran - Mar-18-2020
what exactly xml database is? If you mean xml file, same apply for other file/formats that is processed in memory - i.e. it's up to you to assess cost/benefits - e.g. drag on performance of I/O operation on large file vs. risk of losing info.
RE: XML question - DPaul - Mar-18-2020
OK, thx.
Paul