[-] completed
[*] yet to do
[?] does it need to be done?

- Create Type
- Create View
* Create View (on precompile set deps in source)
- Create Trigger
- Create Table (Columns on Types)
* Create Table / Column Defaults (on precompile set deps in source)
? Create Sequence (function deps -- currval, nextval, setval)
- Create Rule (always cascade)
- Create Operator
- Create Language
- Create Index
- Create Function
* Create Function (on precompile set additional deps in source)

- Create Aggregate (on precompile set additional deps)

- Drop Type
- Drop View
- Drop Trigger
- Drop Table
- Drop Sequence
- Drop Rule
- Drop Operator
- Drop Language
- Drop Index
- Drop Function
- Drop Aggregate

- Alter Table / Primary Key
- Alter Table / unique index
* Alter Table / Default (Compiled default depends on functions / types within)
- Alter Table / Add Column
- Alter table / add column which creates toast table


- Base type dependency on array type managed by pg_depend (always cascaded)
- Table drop foreign key triggers as managed by pg_depend (always cascaded)
- Toast tables depend on relation (always cascade)
* Enable opt_behaviour for most items in gram.y

pg_depend system relations:

	- pg_attribute.attypid -> pg_type
	? pg_class.reltype -> pg_type (type depends on relation covered below)
	? pg_class.relam -> pg_am
	- pg_class.reltoastrelid -> pg_class
	- pg_class.reltoastidxid -> pg_idxid
	- pg_proc.prolang -> pg_language
	- pg_proc.prorettype -> Return Type
	- pg_proc.proargtypes -> (Many input types -- assumption of max 4 oids in the oidvector)
	- pg_type.typinput -> pg_proc
	- pg_type.typoutput -> pg_proc
	- pg_type.typreceive -> pg_proc
	- pg_type.typsend -> pg_proc
	- pg_type.typrelid -> pg_class
	- pg_type.typelem -> pg_type
	- pg_trigger.tgfoid -> pg_function
	- pg_trigger.tgrelid -> pg_class
	- pg_trigger.tgconstrrelid -> pg_class (always cascade)
	- pg_rewrite.ev_class -> pg_class
	? pg_opclass -> * (Can users add or modify these?)
	- pg_operator.oprleft -> pg_type
	- pg_operator.oprright -> pg_type
	- pg_operator.oprresult -> pg_type
	- pg_operator.oprcom -> pg_operator
	- pg_operator.oprnegate -> pg_operator
	- pg_operator.oprlsortop -> pg_operator
	- pg_operator.oprrsorttop -> pg_operator
	- pg_operator.oprcode -> pg_proc
	- pg_operator.oprrest -> pg_proc
	- pg_operator.oprjoin -> pg_proc
	- pg_aggregate.aggtransfn -> pg_proc
	- pg_aggregate.aggfinalfn -> pg_proc
	- pg_aggregate.aggbasetype -> pg_type
	- pg_aggregate.aggtranstype -> pg_type
	- pg_aggregate.aggfinaltype -> pg_type


OTHER NOTES
-----------

DROP TYPE <complex type> should be restricted by DROP TYPE.  Ie.  DROP TYPE pg_class;

CREATE TABLE tab (col1 int4 DEFAULT nextval('seq'));
  DROP FUNCTION nextval(text) CASCADE;
    Drop the column (col1) or set the default to NULL?

Do objects depend on users (ownership)?  ie. DROP USER CASCADE to dump everything they own when they're removed?