Row counts/data changes. Any catalog table that has this info?

Folks,

Is there a catalog table or location where I can go to find data counts for
tables?

It would be nice if I could do a query which returned something like:

table_name    #Rows
cust          1000
order         5000
order_detail  9500

without having to have the overhead of querying each table in turn.

If there is such a source then is it accurate as of now or last vacuum or
???

On a related note...any location where I can see the most recent date a
table was changed (insert/update/delete).


Tx in advance...
D
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