In researching something else I ran across this tip that might be helpful.
If for some reason you need to insert a record into a database (at least for SQLite) but just want the default values , you don’t need to name all the fields (opps! columns 
)…
INSERT INTO mytable DEFAULT VALUESwill produce a new record initialized with whatever defined default values were supplied in the CREATE TABLE statement and all you need to know it the table name itself…