Description of the columns of the TABLE_AUTHS table (the underlined columns form the primary key):
 

COLUMN NAME	DATA TYPE	DESCRIPTION
GRANTOR	CHAR	user who granted the privilege
GRANTEE	CHAR	user who has received the privilege
TABLE_ID	NUMERIC	unique number of the table on which the privilege is granted
TABLE_NAME	CHAR	table or view on which the privilege is granted
TABLE_CREATOR	CHAR	name of the owner of the table on which the privilege is granted
SELECT_PRIV	CHAR	YES if the user has the SELECT privilege
INSERT_PRIV	CHAR	YES if the user has the INSERT privilege
DELETE_PRIV	CHAR	YES if the user has the DELETE privilege
UPDATE_PRIV	CHAR	YES if the user has the UPDATE privilege
REFERENCE_PRIV	CHAR	YES if the user has the REFERENCES privilege
EXECUTE_PRIV	CHAR	YES if the user has the privilege to execute a stored procedure
WITHGRANTOPT	CHAR	if this column is YES, the user can pass the privilege to another user; otherwise, the value of this column is NO

Description of the columns of the COLUMN_AUTHS table (the underlined columns form the primary key):
 

COLUMN NAME	DATA TYPE	DESCRIPTION
GRANTOR	CHAR	user who granted the privilege
GRANTEE	CHAR	user who has received the privilege
TABLE_ID	NUMERIC	unique number of the table on which the privilege is granted
TABLE_NAME	CHAR	table or view on which the privilege is granted
TABLE_CREATOR	CHAR	name of the owner of the table on which the privilege is granted
COLUMN_NAME	CHAR	column name on which the UPDATE privilege was granted
UPDATE_PRIV	CHAR	YES if the user has the UPDATE privilege on this column
REFERENCE_PRIV	CHAR	YES if the user has the REFERENCES privilege on this column
GRANT_OPT	CHAR	if this column is YES, the user can pass the privilege to another user; otherwise, the value of this column is NO