CREATE TABLE html ( id int not null auto_increment primary key, tag_name varchar(255) not null, tag_titl varchar(255), tag_desc text not null, tag_comp text not null, tag_euri text not null);CREATE INDEX idx_html ON html( tag_name );CREATE TABLE css ( id int not null auto_increment primary key, property_name varchar(255) not null, property_titl varchar(255) not null, property_desc text not null, property_comp text not null, property_euri text not null);CREATE INDEX idx_css ON css( property_name );CREATE TABLE attributes ( id int not null auto_increment primary key, attr_name varchar(255) not null, attr_desc text not null);CREATE INDEX idx_attr ON attributes( attr_name );