Determining the subject area of data warehouse construction

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One 、 What is the theme ？

Two 、 What is a topic domain ？

3、 ... and 、 How to divide subject areas ？

1、 According to the system

2、 By business process

3、 By employer

4、 By department  

5、 Divided by function or application

6、 By industry experience

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One 、 What is the theme ？

The theme is to synthesize the data in the enterprise information system at a higher level 、 An abstract concept used in classification and Analysis , Each topic basically corresponds to a macro analysis field . Topic domain is a highly generalized concept level classification of business objects , The purpose is to facilitate the management and application of data .

Two 、 What is a topic domain ？

Topic domain is usually a collection of closely related data topics . According to the focus of the business , Divide these data topics into different topic domains ( In other words, it is the boundary of a topic determined after analyzing a topic .)

3、 ... and 、 How to divide subject areas ？

1、 According to the system

A business system abstracts a topic domain , There are several kinds of business systems , It can be divided into several categories

2、 By business process

A business process abstracts a topic domain , For example, there are goods in the business system 、 transaction 、 Logistics etc.

3、 By employer

For example, the demand side is the finance department , You can set the corresponding financial subject field , There may be employee salary analysis in the financial subject field , ROI analysis and other topics

4、 By department  

For example, there may be operational domains 、 Technology domain, etc , There may be wage expenditure analysis in the operation domain 、 Analysis of the publicity effect of the activity .

5、 Divided by function or application

For example, the circle of friends data field in wechat 、 Group chat data domain, etc , And the circle of friends data domain may have user dynamic information topics 、 Advertising themes, etc ; For example, there will be chat in Social Software 、 Circle of friends 、 Group chat 、 Send files and other functional modules , The chat module will involve the user theme in the data warehouse 、 Picture theme 、 Text theme, etc , Therefore, the chat module can also be summarized as the chat topic domain .

6、 By industry experience

such as TD FS-LDM (Financal Services Logical Data Model), Applicable to securities 、 Bank 、 insurance

Ten themes ：

The parties concerned 、 product 、 agreement 、 event 、 assets 、 financial 、 Institutions 、 regional 、 marketing 、 channel .

IBM BDWM (Banking Date Warehouse Model)

The nine themes of banks ：

party 、 contract 、 Conditions 、 product 、 place 、 classification 、 Business direction 、 event 、 Resource projects

    To make a long story short , The starting point is different , There can be different division logic . Iteration can be used in the construction process , Don't worry about abstracting all the topics at once , Start with a clearly defined theme , Follow up gradually summed up into their own industry standard model .