predict_lock

The predict_lock table stores the locks that are used to control access to the predict table.

Structure

The predict_lock table has the following structure:

TABLE predict_lock (
	node_id		NUMERIC(5)			NOT NULL,
	proc_num	NUMERIC(5)		NOT NULL,
	case_num	NUMERIC(15)		NOT NULL)

Column	Description
node_id	ID of the node that this prediction lock is hosted on, as defined in the nodes table.
proc_num	ID of the procedure that this prediction lock applies to, as defined in the proc_index table.
case_num	Case number of the main case that this prediction lock applies to, as defined in the case_information table.

Primary Key

The following primary key is defined for this table.

Key Name	Column(s)
pk_predict_lock	node_id proc_num case_num

Foreign Keys

The following foreign key is defined for this table.

Key Name	Column(s)	Referenced in Table...	Column(s)
fk_predict_lock1 This key enforces the DELETE CASCADE referential action.	node_id proc_num case_num	case_information	node_id proc_id casenum

Indexes

The following index is defined for this table.

Index Name	Column(s) Indexed
idx_pred_lock_fk	case_num proc_num node_id

Table Activity

The predict_lock table contains one row for every main case on the system that currently has prediction data defined in the predict table. Rows are added, updated and deleted in the following situations.

A row is...	When...
added	background prediction is enabled on the iProcess Engine, and a case that has prediction enabled is started. Note: Case prediction can be enabled and disabled using the ENABLE_CASE_PREDICTION process attribute. See TIBCO iProcess Engine Administrator's Guide for more information.
updated	never.
deleted	a case that has prediction enabled is purged.