1

A method for comparison of computer-based and data-processing models of a complex system, wherein a first model and a second model of the system are present, the models in each case model a system behaviour by way of predefined objects which represent activities and units within the system, and the method comprises the following steps:

comparing both models and determining predefined objects of the first and the second model, which objects are associated with one another in each case,

determining differences in attributes of predefined objects associated with one another, and

issuing the determined associations and differences to a user.

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2

The method according to Claim 1, wherein on comparison of the first and second model, the predefined objects of the models are associated with one another on agreement of at least one of

an absolute identifier of the objects,

a qualified name in each case indicating and defining the objects under the designation of higher-order objects, and

a type description of the predefined objects.

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3

The method according to Claim 2, wherein an agreement of an identifier has priority over an agreement of names.

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4

The method according to Claim 2, wherein a manual association has priority over the agreement of identifiers or of names.

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5

The method according to Claim 1, wherein the first and the second model in each case comprise

at least one first and a second modelling level on which the system in each case with different degrees of abstraction is represented by definition of objects and of links between the objects,

and associations or relations between objects of the first and of the second modelling level.

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6

The method according to Claim 5, wherein the links represent an exchange or a transfer of working means, wherein a working means represents a physical unit or an information unit.

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7

The method according to Claim 5, wherein the associations between the objects of the first and second modelling level represent a partial support of the objects of the first modelling level by the objects of the second modelling level.

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8

The method according to Claim 5, wherein at least some objects on the first modelling level represent processes, wherein a process is an entirety of tasks and sequences of an organisation- or production unit, and wherein at least some objects on the second modelling level represent elements, wherein an element is a real physical or logical unit, and wherein the support of a process by an element expresses the fact that the process requires the element in order to be able to function.

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9

The method according to Claim 5, wherein at least some objects on the first modelling level represent elements, wherein an element represents a real physical or logical unit, and wherein at least some objects on the second modelling level represent information and function units, wherein the information- and function units are data, programs or rules, and wherein the support of an element by an information and function unit expresses the fact that the element requires the information and function unit in order to be able to function.

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10

The method according to Claim 1, wherein at least two models of the same system exist, a first model represents the system in a first condition and a second model the system in a second condition, and comprising the step of automatically determining actions for conveying the system from the first into the second condition is carried out.

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