Creating a package to store common varchars in table inserts

Question

I have multiple tables that have default values for columns instead of null. They occur frequently in multiple tables so I assume the best and easiest solution would be to create a package. However i get this error when doing the follow:
ORA-06553: PLS-221: 'DEFAULT_TBD' is not a procedure or is undefined
CREATE OR REPLACE PACKAGE Globals
IS
     var1 VARCHAR2(40);
END Global_variables;
CREATE OR REPLACE PACKAGE BODY Globals
IS
BEGIN
     var1 := 'n/a';
END Global_variables
Create table temp (
names VARCHAR2(40)
insert into temp values (Global_variables.var1) <<<< causes error

Answer 1

Or is it better to specify default values during table creationThis is the best approach for a number of reasons. Firstly, it is the standard approach, so anybody else who has to work on your database knows where to find the default values...
SQL> create table tab23 (id number, usr varchar2(10) default 'APC')
  2  /
Table created.
SQL> select column_name, data_default from user_tab_columns where table_name = '
TAB23';
COLUMN_NAME            DATA_DEFAULT
ID
USR                    'APC'
SQL>Secondly, the whole point about default values is not having to include them in the INSERT statement....
SQL> insert into tab23 (id) values (1)
  2  /
1 row created.
SQL> select * from tab23
  2  /
        ID USR
         1 APC
SQL>
im not sure if this is a bad idea hardcoding the value incase it were to change.Change is easy enough to handle....
SQL> alter table tab23 modify usr default 'DAD'
  2  /
Table altered.
SQL>
SQL> insert into tab23 (id) values (2)
  2  /
1 row created.
SQL> select * from tab23
  2  /
        ID USR
         1 APC
         2 DAD
SQL>Cheers, APC
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