Notes

Outline

LEA Section 4, Chapter 3: EA Topology Concept

Background EA topology concept  were originally created in around year 2000 to document  enterprise environment by the author. EA topology has become a most popular and demanded EA product a government environment. The EA topology approach  has been revised many times based on stakeholder feedback and become a repeatable method. The author suggest the term of EA topology based on the term of traditional geographical topology.

The topology for EA “ A topology (from Greek topos meaning place) is a description of any kind of locality in terms of its layout” Topology is usually a schematic presentation instead of a narrative statement. EA topology describe the function locality in terms of Enterprise Architecture  lay out. EA topology is also logical location oriented by each type of work place. . EA topology describe business function by each work place. EA topology is the map of the enterprise.

Why EA topology Geographic survey to establish topology  is the first thing on traditional civil engineering project. The engineers need topology to for city,  site planning and architecture design. Establish EA topology is first thing on an EA project. The EA architects need the EA topology to design the engineering of reuse and sharing.

The value of EA Topology See the whole. Preserve the institution knowledge. Render the institutional knowledge in a explicit expression. facilitate architecture communication. EA topology as a analysis tool.

The content of EA topology

EA topology as analysis tool EA topology as analysis tool to identify : Redundant system. Under automation. Obsolete technology. Stove pipe systems.

A major effort of EA Geographical survey has been a major effort of traditional engineering. The geographical survey have risk their life to map the country. EA topology to map out the enterprise is also a major effort in EA. EA topology requires month of effort with the stakeholder participation.

EA topology is data source EA topology is the trawling tool to capture the abstractive institutional knowledge from the deep ocean of stakeholder’s mind and render the information in a explicit presentation. It is a manual effort requires patient, time, effort and resources similar to the engineering survey work in the civil engineering. The topology serve as the source for the computer to analyze and generate complicate model and relations. It is the input to the CAD system rather a computer generated graphic by pushing the button.

EA topology drawing EA topology adopt the traditional engineering drawing approach. The EA topology drawing present the abstractive information . The EA topology drawing in hardcopy for touch and feel which bring out the institutional knowledge. One page for each business unit for holistic comprehension.

Adopt engineering drawing Standard architecture drawing size. The author use architecture size D  (18” by 24 “) for the initial development. Title Block includes a border and various sub-sections for providing quality, administrative, and technical information. The title should include sufficient information to identify the type of drawing, e.g. general arrangement or detail. Legend section of a drawing lists and explains any special symbols and conventions used on the drawing. Legend section must be reviewed before reading the drawing

EA Topology drawing  example

EA topology drawing set EA topology is delivered on a drawing set rather than by each business unit. EA is the effort to see the whole. To reuse and share, each business unit must see the whole. Each business unit must know what the others have.

EA topology drawing set example