PUBLISHER table definition uses NULL in DB2 Database Script

DB2 columns allow NULL values by default so DB2 does not recognize NULL in a column definition (you must add NOT NULL to the column definition if it should not allow NULL values however). The PUBLISHER table definition in the DB2 schema file includes NULL in the column definition for the following four MAX_* columns.

MAX_BUSINESSES INT NULL,
MAX_SERVICES_PER_BUSINESS INT NULL,
MAX_BINDINGS_PER_SERVICE INT NULL,
MAX_TMODELS INT NULL,

NULL should be removed from each of these column definitions.