Array Char/VarChar Size

[dmp <danap(at)ttc-cmc(dot)net>]

Given a defined table as such:

CREATE TABLE array_types (

   data_type_id serial NOT NULL,
  
   decimal_array decimal(16,2)[] DEFAULT NULL,
   numeric_array numeric(10,2)[] DEFAULT NULL,
   varchar_array varchar(30)[] DEFAULT NULL,
   char_array char(30)[][] DEFAULT NULL,
   PRIMARY KEY  (data_type_id)
);

How do I obtain the precision, decimal places, or character
sizing information from the database. Notice these are array
types.

danap.