tailieunhanh - Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 3

rất dữ liệu kỹ thuật mô hình đã thiết lập của riêng của nó từ ngữ, định nghĩa, và kỹ thuật. Tiếng địa phương này Giấy phép chúng ta hiểu khái niệm phức tạp và khó khăn để sử dụng chúng và thiết kế cơ sở dữ liệu phức tạp. Cuốn sách này mô hình quan hệ dữ liệu Áp dụng kỹ thuật để phát triển kho dữ liệu mô hình dữ liệu. | Understanding the Business Model E Introductions. The participants introduce themselves and the session objectives are reviewed. Education. Education is provided on the relevant concepts on the process and on the starter model. Review and refinement of subject areas. The subject areas in the starter model are reviewed and a set of subject areas is derived. Definitions for those subject areas are then reviewed and refined. Refinement. The list of potential subject areas is reviewed and refined to arrive at the set of subject areas. A critical part of the agenda for the first session is education. During the educational portion of the meeting the facilitator explains what a subject area is how it should be identified and defined and why the resultant model is beneficial. The processes for example brainstorming to be employed are also described along with the rules for the facilitated session. TIP If some members of the group understand the concepts and others don t consider having an educational session before the actual facilitated session. This provides the attendees with a choice and does not force people who know the topic to attend redundant education. The remainder of this section presumes that the group is not beginning with a starter model. Following the educational session the group engages in a brainstorming session to identify potential subject areas. In a brainstorming session all contributions are recorded without any discussion. It is therefore not uncommon for people to identify reports processes functions entities attributes organizations and so on in addition to real subject areas. Figure shows the potential result of such a brainstorming session for an automobile manufacturer such as the Zenith Automobile Company. If you look closely at the flip charts you ll see that most of the second sheet and part of the third sheet deviated into too great a level of detail. When this happens the facilitator should remind the group of the definition of a .