ha_innobase.h:

  	uint max_record_length() const { return HA_MAX_REC_LENGTH; }

  	uint max_keys()          const { return MAX_KEY; }

  	uint max_key_parts()     const { return MAX_REF_PARTS; }

				/* An InnoDB page must store >= 2 keys:

				max key length is therefore set to 7000

				bytes */

  	uint max_key_length()    const { return 7000; }

				/* An InnoDB page must store >= 2 keys;

				a secondary key record must also contain the

				primary key value:

				max key length is therefore set to slightly

				less than 1 / 4 of page size which is 16 kB */

  	uint max_key_length()    const { return 3500; }

  	bool fast_key_read()	 { return 1;}

	key_map keys_to_use_for_scanning() { return ~(key_map) 0; }

  	bool has_transactions()  { return 1;}