Procedure

From the specification workbench hit list, choose Utilities → Sets of Rules → New

The Easy Expert Edit Set of Rules screen appears.

It is possible to create or edit EH&S Easy Expert sets of rules without selecting specifications in the specification workbench hit list. You must, however, select specifications in order to be able to execute the set of rules.

To make changes to identifiers, choose beside Change identifiers .

The Changes to identifiers input box appears .

a. Enter the identifier category, identifier type, language, operator , and identifier.

b. Confirm your entries.

The Easy Expert Edit Set of Rules screen appears again.

To make changes to value assignments or create new value assignments, choose beside Change value assignments .

The property tree dialog box appears.

a. If you need to, change to another property tree in order to display the value assignment type you want to change.

b. In the tree, select the value assignment type by double-clicking it.

The Easy Expert Characteristic Changes dialog box appears.

c. In the upper part of the screen, enter any restrictions you require.

Entering restrictions allows you to set filters. When you enter restrictions, the set of rules pass takes only the value assignment instances into account whose values match the values of the restriction.

If you choose the phrase approx. as the restriction for the accuracy, only the value assignment instances are taken into account whose accuracy is assigned the phrase approx. as its value.

If you enter >3 for the value of the density as a restriction, only substances are taken into account where the value assignment type Density has a value of >3.

d. In the lower part of the screen, enter the value changes using the operators.

e. Confirm your entries.

The property tree dialog box appears again. You can also enter changes for other value assignment types in the set of rules.

f. Confirm your entries.

The Easy Expert Edit Set of Rules screen appears again.

g. Choose whether you want to change existing value assignments or create new value assignments.

To use usages as selection criteria, choose beside Read in the Usage group box.

The Enter Usage dialog box appears.

Make your entries and confirm them.

To change usages or create new usages for new value assignment instances, choose beside Write in the Usage group box.

The Enter Usage dialog box appears.

Make your entries and confirm them.

Under Options choose which of the following you require:

Check the results of the set of rules before writing them to the database

Write the results directly

Write the results in the background

Choose Execute if you want to execute the set of rules

Choose Save if you want to save the set of rules .

To change a value assignment type dependent on another value assignment type, you must use the selection criteria in the Edit Specification: Initial Screen. You can therefore enter characteristics of a value assignment type as selection criteria at the level of the specification workbench hit list and edit another value assignment type at the level of the EH&S Easy Expert pass.

For example, in this way you could select all real substances with a density of >2 and then for all these, add the phrase approx. in the value assignment Flow time during the actual EH&S Easy Expert pass.

See also:

Sample Set of Rules for EH&S Easy Expert