Domeinmodellering-Opdracht/2 Activiteiten/Assignments/Opdracht05-A03/2 Opdrachtbeschrijving

Lecture A3: The basic modeling technique

In this lecture we focus on the process of modeling.

Background In the previous task we have described the information modeling process as a common activity between the domain expert and the system analyst to develop the information grammar. This grammar describes the common language shared by the application domain and the system analysis. In this task we further focus on the concept of information grammar. We discuss the limitations of our approach in terms of a system generations. Furthermore, we provide the underlying formal model for our approach.

Material

In this lecture we focus on chapter 4 of the lecture notes.

Targets

After this study task you will be able to:

1. motivate the natural language based approach to information modeling.
2. explain the various generations of information systems.
3. represent the structure of an ORM schema as a AGFL grammar.

What you have to do

1. Make exercises 1 and 2 from the current chapter. (2h)
2. Special exercise 1.

We focus on Twitter and see that we have users that may follow each other and tweets being characterized by @-tags and #-tags. Device a conceptual scheme for this Universe of Discourse that covers the basic twitter actions.

1. Special exercise 2. Proof the following statement or give a counter example. (klik op het plaatje rechts dat zich helaas niet netjes in de tekst wil voegen)

1. Special exercise 3. Proof the following statement or give a counter example. (klik op het plaatje rechts dat zich helaas niet netjes in de tekst wil voegen)

Deadline for submitting exercises: Oct 21, 2010 at the usual time at the ususal place