MySQL
When an XML Schema is generated from a MySQL database (DB), the MySQL DB datatypes are converted to XML Schema datatypes as listed in the table below.
MySQL Datatype  | XML Schema Datatype  | 
char  | xs:string  | 
varchar  | xs:string  | 
text  | xs:string  | 
tinytext  | xs:string  | 
mediumtext  | xs:string  | 
longtext  | xs:string  | 
tinyint(1)  | xs:boolean  | 
float  | xs:float  | 
double  | xs:double  | 
decimal  | xs:decimal  | 
datetime  | xs:dateTime  | 
blob  | xs:base64Binary  | 
tinyblob  | xs:base64Binary  | 
mediumblob  | xs:base64Binary  | 
longblob  | xs:base64Binary  | 
smallint  | xs:short  | 
bigint  | xs:long  | 
tinyint  | xs:byte  |