concentrating on the data model, a three-level modeling method is developed and applied to the construction of customer information data warehouse . and the data granularity is also discussed 對于數(shù)據(jù)倉庫中的數(shù)據(jù)模型,探討了一種三層的建模方式,并將其應(yīng)用到客戶信息數(shù)據(jù)倉庫建設(shè)中;最
thirdly, we need to build up database to keep the data for data mining, and based on the analysis of economic data warehouse, data table and the problems of data granularity, data partition and the structure of data warehouse, we set the star structure of regional macro economic analysis, and we design the fact table and dimension table for data warehouse . so we design and construct economic data warehouse and fulfill economic data entry, transfer, store and management 在這章中我們給出了一個關(guān)于pse的數(shù)據(jù)倉庫屬性的定義,即:數(shù)據(jù)倉庫是一種來源于各種渠道的單一的、完整的、穩(wěn)定的、集成的數(shù)據(jù)存儲,這個儲存的數(shù)據(jù)本質(zhì)上是面向主題的、集成的、非易失的和可動態(tài)更新的,數(shù)據(jù)的邏輯形式是提供公式數(shù)據(jù)和組織數(shù)據(jù)。