Can anyone help me with this problem?
I have a table in my database that holds information on policies and
this table is linked to a number of other tables. I need to be able to
keep a history of all changes to a policy over time. The other tables
that are linked to policy also need to store historical data. When I
run a query on the policy table for a certain period, I also need to
be able to pull the correct related rows (i.e. the information that
would have been in the table at that time) from the tables linked to
it.
Does anyone have any suggestions on how to store historical
information in databases? Any good resources (books, etc..) that cover
this information?
Thanks for your time.
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
