Here are the results, in both cases I loaded 100 rows in the parent table and 1000 in the child table, with foreign keys enabled.
Firebird 2.1 with Jaybird 2.1.3 and DBMonster 1.0.3 (And Java .6)
Table structure is:
CREATE TABLE GUYS(
GUY_ID Integer NOT NULL,
GUY_NAME Varchar(45) NOT NULL,
CONSTRAINT PK_GUYS PRIMARY KEY (GUY_ID)
);
GRANT DELETE, INSERT, REFERENCES, SELECT, UPDATE
ON GUYS TO SYSDBA WITH GRANT OPTION;
CREATE TABLE BADS_ATTRIBUTES(
ATTRIBUTE_ID Integer NOT NULL,
GUY_ID Integer NOT NULL,
ATTRIBUTE_NAME Varchar(45) NOT NULL,
CONSTRAINT PK_BADS_ATTRIBUTES PRIMARY KEY (ATTRIBUTE_ID,GUY_ID)
);
ALTER TABLE BADS_ATTRIBUTES ADD CONSTRAINT FK_BADS_ATTRIBUTES_1
FOREIGN KEY (GUY_ID) REFERENCES GUYS (GUY_ID) ON UPDATE CASCADE ON DELETE CASCADE;
GRANT DELETE, INSERT, REFERENCES, SELECT, UPDATE
ON BADS_ATTRIBUTES TO SYSDBA WITH GRANT OPTION;
D:\dbmonster-core-1.0.3\bin>dbmonster --grab -t guys bads_attributes -o d:/fireb
ird_2_1_schema.xml
D:\dbmonster-core-1.0.3\bin>rem Batch file to run dbmonster under Windows
D:\dbmonster-core-1.0.3\bin>rem Contributed by Peter De Bruycker
2008-05-23 22:43:03,203 INFO SchemaGrabber - Grabbing schema from database. 2 tables to grab.
2008-05-23 22:43:03,265 INFO SchemaGrabber - Grabbing table GUYS. 50% done.
2008-05-23 22:43:03,359 INFO SchemaGrabber - Grabbing table BADS_ATTRIBUTES. 100% done.
2008-05-23 22:43:03,359 INFO SchemaGrabber - Grabbing schema from database comp
lete.
D:\dbmonster-core-1.0.3\bin>dbmonster -s d:/firebird_2_1_schema.xml
D:\dbmonster-core-1.0.3\bin>rem Batch file to run dbmonster under Windows
D:\dbmonster-core-1.0.3\bin>rem Contributed by Peter De Bruycker
2008-05-23 22:49:32,828 INFO DBMonster - Let's feed this hungry database.
2008-05-23 22:49:32,984 INFO DBCPConnectionProvider - Today we are feeding: Fir
ebird 2.1 Beta 2=WI-T2.1.0.16780 Firebird 2.1 Beta 2/tcp (xxx)/P10 W
I-T2.1.0.16780 Firebird 2.1 Beta 2=WI-T2.1.0.16780 Firebird 2.1 Beta 2/tcp (pm-7
071b5d42629)/P10
2008-05-23 22:49:33,187 INFO Schema - Generating schema
2008-05-23 22:49:33,187 INFO Table - Generating table
2008-05-23 22:49:33,187 INFO Table - Generating table
2008-05-23 22:49:33,359 INFO Table - Generation of table
2008-05-23 22:49:39,375 INFO Table - Generation of table
2008-05-23 22:49:39,375 INFO Schema - Generation of schema
2008-05-23 22:49:39,375 INFO DBMonster - Finished in 6 sec. 547 ms.
D:\dbmonster-core-1.0.3\bin>
The same with MySQL 5.1.23 Connector/J 5.1.6 (InnoDB tables of course as I wanted to have FK)
Table structure is:
DROP TABLE IF EXISTS `test`.`guys`;
CREATE TABLE `test`.`guys` (
`guy_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`guy_name` varchar(45) NOT NULL,
PRIMARY KEY (`guy_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1001 DEFAULT CHARSET=utf8;
DROP TABLE IF EXISTS `test`.`bads_attributes`;
CREATE TABLE `test`.`bads_attributes` (
`attribute_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`guy_id` int(10) unsigned NOT NULL,
`attribute_name` varchar(45) NOT NULL,
PRIMARY KEY (`attribute_id`,`guy_id`),
KEY `FK_bads_attributes_1` (`guy_id`),
CONSTRAINT `FK_bads_attributes_1` FOREIGN KEY (`guy_id`) REFERENCES `guys` (`guy_id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=139 DEFAULT CHARSET=utf8;
D:\dbmonster-core-1.0.3\bin>dbmonster --grab -t guys bads_attributes -o d:/mysql
_5_1_23_schema.xml
D:\dbmonster-core-1.0.3\bin>rem Batch file to run dbmonster under Windows
D:\dbmonster-core-1.0.3\bin>rem Contributed by Peter De Bruycker
2008-05-23 22:59:40,515 INFO SchemaGrabber - Grabbing schema from database. 2 tables to grab.
2008-05-23 22:59:40,671 INFO SchemaGrabber - Grabbing table guys. 50% done.
2008-05-23 22:59:40,703 INFO SchemaGrabber - Grabbing table bads_attributes. 100% done.
2008-05-23 22:59:40,703 INFO SchemaGrabber - Grabbing schema from database complete.
D:\dbmonster-core-1.0.3\bin>dbmonster -s d:/mysql_5_1_23_schema.xml
D:\dbmonster-core-1.0.3\bin>rem Batch file to run dbmonster under Windows
D:\dbmonster-core-1.0.3\bin>rem Contributed by Peter De Bruycker
2008-05-23 23:00:02,531 INFO DBMonster - Let's feed this hungry database.
2008-05-23 23:00:02,953 INFO DBCPConnectionProvider - Today we are feeding: MyS
QL 5.1.23-rc-community
2008-05-23 23:00:03,093 INFO Schema - Generating schema
2008-05-23 23:00:03,093 INFO Table - Generating table
2008-05-23 23:00:03,125 INFO Table - Generating table
2008-05-23 23:00:12,812 INFO Table - Generation of table
2008-05-23 23:00:49,000 INFO Table - Generation of table
2008-05-23 23:00:49,000 INFO Schema - Generation of schema
2008-05-23 23:00:49,000 INFO DBMonster - Finished in 14 sec. 187 ms.
D:\dbmonster-core-1.0.3\bin>
The difference is quite large!
You can compare my results to those obtained by the SQLite team, hope that these numbers make sense to you.
I'll try with PostgreSQL too, just don't know when
