database design - MySQL constants table -

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how can create constants table in mysql match type (using int differentiate among different types) full name of type. constants table should read , not expected ever need changing or updating reading.

create table accounts (     accounttype int,     ... );  create table accounttypes (     typeid int,     typename varchar(255), );

in java there immutablemap<integer><string> (in guava), or enums integer instance variables, , in c++ there enum or static const string[...] ... = { ... } type integer index.

is possible, or there better alternative?

looks need similar this:

create table accounttype (     typeid int primary key,     typename varchar(255),     typeshortname varchar(255) );  insert accounttype values     (1, 'foo', 'f'),     (2, 'bar', 'br'),     (3, 'baz', 'bz');  create trigger accounttypeinserttrigger before insert on accounttype each row     signal sqlstate '45000'     set message_text = 'cannot insert - accounttype table read-only.';  create trigger accounttypeupdatetrigger before update on accounttype each row     signal sqlstate '45000'     set message_text = 'cannot update - accounttype table read-only.';  create trigger accounttypedeletetrigger before delete on accounttype each row     signal sqlstate '45000'     set message_text = 'cannot delete - accounttype table read-only.';

essentially, define normal table , fill data, then use triggers forbid changes.

according mysql documentation: to signal generic sqlstate value, use '45000', means “unhandled user-defined exception.”

alternatively, revoke privileges except select appropriate users.


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