3 tables or 1 table? - mysql

Question

CREATE TABLE IF NOT EXISTS `domains` (
`domains_id` bigint(15) NOT NULL AUTO_INCREMENT,
`domains_url` varchar(255) NOT NULL,
PRIMARY KEY (`domains_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
CREATE TABLE IF NOT EXISTS `domains_actions` (
`domains_actions_id` int(15) NOT NULL AUTO_INCREMENT,
`domains_actions_selmgec` int(15) NOT NULL,
`domains_id` int(15) NOT NULL,
`domains_actions_member` int(15) NOT NULL,
`domains_actions_date` date NOT NULL,
`actions_id` int(2) NOT NULL
`domains_actions_value` int(15) NOT NULL,
PRIMARY KEY (`domains_actions_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
CREATE TABLE IF NOT EXISTS `actions` (
`actions_id` int(15) NOT NULL AUTO_INCREMENT,
`actions_action` varchar(15) NOT NULL,
PRIMARY KEY (`actions_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;
So if I have read properly, I need an actions tables for the likes/new/social then this is linked into domains_actions.

Answer 1

Not sure what you're trying to do with these, but they obviously have repeating data. You should consolidate into one table with a type column; perhaps using ENUM.
CREATE TABLE IF NOT EXISTS `domains` (
`domains_id` int(15) NOT NULL AUTO_INCREMENT,
`domains_selmgec` int(15) NOT NULL,
`domains_domain` int(15) NOT NULL,
`domains_member` int(15) NOT NULL,
`domains_date` date NOT NULL,
`domains_type` int(2) NOT NULL,
`type` ENUM('likes', 'new', 'social'),
PRIMARY KEY (`domains_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
A more relational and normalized schema would look something like:
CREATE TABLE IF NOT EXISTS `domain` (
`id` int(15) NOT NULL AUTO_INCREMENT,
`selmgec` int(15) NOT NULL,
`domain` int(15) NOT NULL,
`member` int(15) NOT NULL,
`date` date NOT NULL,
`type` int(2) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE IF NOT EXISTS `type` (
`id` tinyint(1) NOT NULL AUTO_INCREMENT,
`type` varchar(6) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
CREATE TABLE IF NOT EXISTS `domainType` (
`domain_id` int(15) NOT NULL,
`type_id` tinyint(1) NOT NULL,
PRIMARY KEY (`domain_id`, `type_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;
This design will allow you hold a single domain and assign it multiple types. You would need to change the engine to InnoDb and create foreign key constrains to enforce these types.
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Answer 2

Without knowing all of the details, I would create one table and then a TypeId column that references another table:
CREATE TABLE IF NOT EXISTS `domains` (
`domains_id` int(15) NOT NULL AUTO_INCREMENT,
`domains_selmgec` int(15) NOT NULL,
`domains_domain` int(15) NOT NULL,
`domains_member` int(15) NOT NULL,
`domains_date` date NOT NULL,
`domains_type` int(2) NOT NULL,
`type_id` int(2) NOT NULL,
PRIMARY KEY (`domains_likes_id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
CREATE TABLE IF NOT EXISTS `types` (
`type_id` int(15) NOT NULL AUTO_INCREMENT,
`type_name` varchar(15) NOT NULL,
PRIMARY KEY (`type_id`)
) ;