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What does datasource on zquery ? It is useful for some thing.


Does firebird only can go to 2gb of memory ???
Read this somewjere ???

DataSource is access provider (Db object, TDBgrid...).
Db with 150 tbls and over 3 mil. rec. size-> about 200MB.
work well on PC 256MB RAM and AMD2800+.
Enough?
PC AMD3000+ and 512MB RAM, select(like with two arg), on 300000 rec. tbl.
gave res < 1sec.

I know it is a link to the db controls , but why it is on a zquery ( zquery is not a control ) ??

Does it works like an Tdataprovider.

if So whein i have an assigned datasource :

query1.open; > should populate the zquery table.

and gives an error witch is no sql. command .. found ..


So it means is not a data provider !!!!! So why is on zquery ??

Provider from non visible to visible, quite simple! If you want just var(query_fileds.value), you do not need DataSource compon.

sfxcc wrote:What does datasource on zquery ? It is useful for some thing.

As far as I know this datasource can be used for master-detail relationships. the details datasource shoud refer to the master datasource.

Once set there must be some other property defining what fields define the Master-Detail relationship.

Mark