Database patterns

Patterns

about

The about tables contain database meta data.

An about table is named 't_about_{name}'.

lookup

The lookup tables contain hard-coded reference data.

A lookup table is named 't_lookup_{name}'.

A lookup table must contain a 'a_{name}_enum' column which identifies a row. The 'a_{name}_enum' column is usually be a DBT_UINT8.

If an optional 'a_{name}_char' column exists it must be of type DBT_ASCII_CHAR_BIN. The PHPBOM library will use lowercase char codes and applications can use uppercase char codes.

If you're extending a PHPBOM lookup table you should code from the max enum down.

token

The token tables contain tokens.

A token table is named 't_token_{name}'.

A token table must contain a 'a_{name}' column which contains the token. The 'a_{name}' column is usually a DBT_TOKEN.

Database types

DBT_UINT8

A DBT_UINT8 is an integer from 0 to 255.

DBT_ASCII_CHAR_BIN

A DBT_ASCII_CHAR_BIN is a single case-sensitive ASCII character.

DBT_TOKEN

A DBT_TOKEN is a case-sensitive 32-character alphanumeric ASCII string.