Database processing method

A database processing method used in a database management system wherein a user inquiry about contents of a database made by the user is analyzed, an execution procedure command package is created in accordance with results of analyzing said user inquiry and database processing is carried out in accordance with said execution procedure command package, said method comprising:

• cataloging information on module calling triggers of embedded modules each implementing an operation of a built-in data type in said database management system when the user defines said built-in data type;
• adding information on embedded modules to be called on relevant module calling triggers obtained from said information on module calling triggers of said embedded modules to said execution procedure command package when said user inquiry made by the user is analyzed and said execution procedure command package is created;
• and
• executing said embedded modules on said relevant module calling triggers specified in said information on embedded modules added to said execution procedure command package when database processing is carried out in accordance with said execution procedure command package.

A database processing system comprising:

• means for storing information on an evaluation style of an embedded module which implements an operation of a user-defined data type and information on module calling triggers for calling the embedded module;
• means for selecting the evaluation style upon creation fo an execution procedure command package;
• means for adding information on the embedded module at a time when a user inquiry is made;
• and
• means for calling the embedded module on module calling triggers when database processing is carried out in accordance with the execution procedure command package.