1.14. Write Control
Interchange databases can be written in the normal course of events, either using the [import ...] tag or with a tag like [data table=table column=field key=code value=new-value]. To control writing of a global database, or to a certain catalog within a series of subcatalogs, or make one read only, see the following:
To enable write control:
Database products WRITE_CONTROL 1
Once this is done, to make a database read only, which won't allow writing even if [tag flag write]products[/tag] is specified:
Database products READ_ONLY 1
To have control with [tag flag write]products[/tag]:
Database products WRITE_TAGGED 1
To limit write to certain catalogs, set:
Database products WRITE_CATALOG simple=0, sample=1
The "simple" catalog will not be able to write, while "sample" will if [tag flag write]products[/tag] is enabled. If a database is to always be writable, without having to specify [tag flag write] ... [/tag], then define:
Database products WRITE_ALWAYS 1
The default behavior of SQL databases is equivalent to WRITE_ALWAYS, while the default for GDBM_File, DB_File, and Memory databases is equivalent to:
Database products WRITE_CONTROL 1 Database products WRITE_TAGGED 1