data warehouse logical design

... supports data- driven analysis Data mining has traditionally operated only on raw data in the data warehouse database or, more commonly, text files of data extracted from the data warehouse database ... a data warehouse differs from that of an OLTP, the design characteristics of a relational database that supports a data warehouse differ from the design characteristics of an OLTP database Data ... interactions with the data warehouse Data Warehouse Architecture Goals A data warehouse exists to serve its users—analysts and decision makers A data warehouse must be designed to satisfy the...

Ngày tải lên: 18/04/2014, 10:18

... What Is a Data Warehouse? Role and Purpose of the Data Warehouse The Corporate Information Factory Operational Systems Data Acquisition Data Warehouse Operational Data Store Data Delivery Data Marts ... data ■ ■ Data delivery is the process that moves data from the data warehouse into data and oper marts Like the data acquisition layer, it manipulates the data as it moves it In the case of data ... the data warehouse but is dramatically different in other aspects: ■ ■ It is subject oriented like a data warehouse ■ ■ Its data is fully integrated like a data warehouse Building the Data Warehouse, ...

Ngày tải lên: 08/08/2014, 22:20

... apply the business data model include operational systems, data warehouse, and data mart databases, and the model provides the meta data (or information about the data) for these databases to help ... area(s) needed for your data warehouse for the business data model You will continue to fill out the business and data warehouse data models as new areas are needed in the data warehouse but should ... technology How you deliver the data from the data warehouse into the various data marts will have an impact on the design of the database Considerations include whether the data is delivered via a portal...

Ngày tải lên: 08/08/2014, 22:20

... Temporary Table (Data to be loaded into the DW) Load data into data warehouse Figure 4.5 Archiving questionable data DATA WAREHOUSE Data Warehouse Archive Data Cleansing, Selection, Change Data Capture ... business data model include application systems, the data warehouse, and data mart databases In addition, the model provides the meta data (or information about the data) for these databases ... adjusted to meet the data warehouse needs The business scenario used to develop the data warehouse data model is the Zenith Automobile Company that we introduced See Building the Data Warehouse, 2nd...

Ngày tải lên: 08/08/2014, 22:20

... the data warehouse facilitates delivery of data to the marts Each mart needing the data can merely copy the conformed dimension table from the data warehouse The merged entity within the data warehouse ... of the data warehouse and the data marts Data acquisition performance The level of granularity may (or may not) significantly impact the data acquisition performance Even if the data warehouse ... to store historical data from disparate systems, the data warehouse data model needs to consider the definitions in the source systems, and we will address the data warehouse design implications...

Ngày tải lên: 08/08/2014, 22:20

... application to create and maintain the data separate from the data warehouse, then to treat this data as any other data source being collected into the data warehouse This is more effort than creating ... situations where the data warehouse is asked to support data that is not available anywhere else It is important to understand that sometimes a data warehouse effort goes beyond data collection and ... concepts for the data warehouse provides the designer with significant flexibility Properly structured, we preserve the primary mission of the warehouse as a focal point for collecting data and for...

Ngày tải lên: 08/08/2014, 22:20

... Business Use of the Data Warehouse The anticipated business use of the data warehouse is a major driver of its design In Chapter 4, we described the first four steps of the data warehouse system ... the ways that transactional data is received into the data warehouse from external applications How the data is presented to the data warehouse has an impact on how the data is processed to achieve ... the quantity of data is high and its potential use is low Business Rules Concerning Changes The business rules concerning changes affect the data warehouse design The eighth data warehouse modeling...

Ngày tải lên: 08/08/2014, 22:20

... that prepares the data for the data warehouse, then load the data and deliver it simultaneously The other method is to load the data warehouse and deliver the data using data warehouse queries ... temptation and perform all data deliveries from the data warehouse You should consider Modeling Transactions 283 Data Mart Transaction Data ETL Process Data Warehouse Data Mart Data Mart Figure 8.13 ... Query performance is not a key issue for the data warehouse The primary purpose of the data warehouse is to retain data and deliver data to external Data Warehouse Optimization 295 systems While...

Ngày tải lên: 08/08/2014, 22:20

... aspect of the data warehouse is data stewardship Specific personnel within the company should be designated as the stewards of specific data within the data warehouse The stewards of the data would ... viable data warehouse must evolve over time to meet constantly changing business needs This evolution requires changes to the data warehouse data models, and one of the challenges facing the data warehouse ... deliver data in the data warehouse Because of the side effects of such changes, these techniques are best applied during initial database design Making such changes after the fact to an existing data...

Ngày tải lên: 08/08/2014, 22:20

... of the data in the chosen mart for what data belongs in the data warehouse data versus the data used in the data mart Your job is to separate the data into the data model for the data warehouse ... API External Data Acquisition Getting Data In TrI Operational Data Store CIF Data Management Data Warehouse Data Delivery Oper Mart OLAP Data Mart Data Mining Warehouse Exploration Warehouse DSI ... these.) The data acquisition programs are designed, coded, tested, and executed You then begin loading the data warehouse Map the data mart data model to the data in the data warehouse The data delivery...

Ngày tải lên: 08/08/2014, 22:20

... starschema-based data marts in a single database instance Data Warehouse Data Model The data warehouse data model is the “system” model for the data warehouse that is created by transforming the business data ... converting one at a time, 374–377 data belonging in data warehouse data, 378–379 data delivery processes, 26 database localization, 187 database structures, 18–19 data- mining warehouse, 18 date and number ... types, 35–45 data stewards, 82, 325, 348–349 data stewardship, 323–324, 346, 374 data subject, 31 data summaries and misleading results, 128 data warehouse applications, 150 data warehouse data model,...

Ngày tải lên: 08/08/2014, 22:20

... kho liệu Chương 2: Tổng quan Data WareHouse Nội dung chương trình bày tổng quan data warehouse gồm: định nghĩa, đặc tính,mô hình, kiến trúc xu hướng tương lai data warehouse Chương Tổng quan Microsoft ... CHƯƠNG TỔNG QUAN VỀ DATA WAREHOUSE Tóm lược nội dung: Nội dung chương trình bày tổng quan data warehouse gồm: định nghĩa, đặc tính,mô hình, kiến trúc xu hướng tương lai data warehouse 2.1 Định ... ĐẠI HỌC QUỐC GIA HÀ NỘI TRƯỜNG ĐẠI HỌC CÔNG NGHỆ Nguyễn Lương Thái Đức Áp dụng Data Warehouse phân tích thông tin dịch vụ giá trị gia tăng điện thoại KHOÁ LUẬN TỐT NGHIỆP ĐẠI HỌC...

Ngày tải lên: 23/11/2012, 15:03

... hàng Data Warehouse Tiền vay Phát hành séc Trái phiếu Hoạt động Thị trường Tiết kiệm Thẻ tín dụng Tích hợp Dữ liệu đưa vào theo cách thống Các HT điều hành Database A Mr J Smith Data Warehouse Database ... Smith Data Warehouse Database B Joe Smith Database C Smith, Joseph Mr J Smith Database D J Smith Database A bal-on-hand Database B balance Database C curr_bal Database D cash_avail balance Bt bin ... khai thác Data Warehouse 00:00 06:00 12:00 18:00 Các kiểu Nhà kho liệu Xí nghiệp (Data Warehouse) Phòng ban (Data Mart) Phân tích (OLAP) Kết xuất thông tin Kho liệu điều hành (ODS) Warehouse...

Ngày tải lên: 25/04/2013, 20:33

... liệu Dữ liệu Chính xác Chính xác thực tế thực tế Chất lượng Chất lượng Lịch sử Lịch sử Data Warehouse Data Warehouse Các thành phần công nghệ giải pháp Phần cứng phần mềm hệ thống Công nghệ ... Mở đầu Các khái niệm Các khía cạnh thiết kế triển khai Giải pháp Nhà kho liệu Oracle (Oracle Warehouse) Mức khái niệm logic Thông tin nhắc lại Nôi dung Các đòi hỏi thực tế liệu cho giải...

Ngày tải lên: 25/04/2013, 20:33

... Examine data needed  Ascertain data availability  Determine data frequency  Decide the refresh cycle Types of Warehouse Data    Fact data - Measures Dimension data - Query drivers Summary data ... an enterprise-wide data warehouse and localized data marts Recognize the difference between independent and dependent data marts Identify the data that is stored in a data warehouse Explain the ... warehouse models Warehouse Architectures    Enterprise-wide solution Data mart solution Combined solution Enterprise Data Warehouse Solution     Large warehouse containing all business data Incremental...

Ngày tải lên: 25/04/2013, 20:33

... administration Target data Target metadata data Apply Transformation Capture data Target data definitions Source/target mappings Source data definitions Source data Source metadata Hình 3.2.1:Tổng ... Devlin Data Warehouse from Architecture to Implementation, AddisonWesley, 1997 [2] Gabrielle Gagnon Data Warehouse, An Overview, PC Magazine, February 22, 1999 [3] Deepak Gupta - Designing a Data ... liệu Oracle phi Oracle tự động tạo sơ đồ liệu sau lu kho chứa Data Mart Designer cho công cụ Oracle Data Mart Builder sử dụng Data Mart Designer có công cụ thiết kế CSDL Oracle cho Chợ Dữ liệu Việc...

Ngày tải lên: 25/04/2013, 20:34

... 1.3 Đặc điểm Trước tiên Data Warehouse sở liệu lớn (very large database-VLDB) Data Warehouse thường đọc, phục vụ cho nhu cầu báo cáo, Data Warehouse hướng tính ổn định Data Warehouse lấy thông tin ... có tương tác với kho liệu Hình 13: The data warehouse and external data Trang -43- Tìm hiểu Data Warehouse 3.4.Siêu liệu kho liệu (Metadata in the Data warehouse) Siêu liệu yêu cầu có kiến trúc ... đổi liệu điện tử (Electronic data interchange - EDI): 43 3.4 Siêu liệu kho liệu (Metadata in the Data warehouse) 44 3.5 Danh mục kho liệu (The data warehouse catalog -DWC): 44...

Ngày tải lên: 26/04/2013, 15:19

... cáo thực tập tổng hợp Tên đề tài: Khoa: Tin học kinh tế “ Xây dựng phần mềm quản lý hệ thống Data Warehouse Ngân hàng Công thương Việt Nam “ Đây đề tài hay, việc thực đề tài giúp em tổng hơp ... thực hàng ngày Phòng tích hợp hệ thống em định chọn đề tài “ Xây dựng phần mềm quản lý hệ thống Data Warehouse Ngân hàng Công thương Việt Nam “ làm đề tài nghiên cứu cho chuyên đề thực tập tốt nghiệp...

Ngày tải lên: 06/08/2013, 10:11

... important logical design validation step It confirms that the design is based on recurrent themes Module 3: Logical Design and Behavioral Design Patterns v Lab Strategy ! Lab 3: Logical Design ... many design reviews Because the discovery of patterns in a logical design is an art rather than a science, it is important to hold many design reviews to validate the logical design Module 3: Logical ... Microsoft® PowerPoint® file 1910A_03.ppt ! Module 3: Logical Design and Behavioral Design Patterns ! Lab 3: Logical Design and Behavioral Design Patterns Preparation Tasks To prepare for this...

Ngày tải lên: 19/10/2013, 02:15

... center The Three Principles of Data Center Infrastructure Design The Three Principles of Data Center Design When you understand the three principles of data center design, you are able to: • Lower ... transmission within the data center A substandard performing data canter can be just as costly and disruptive to your business as downtime The Three Principles of Data Center Infrastructure Design As networks ... slack Page  The Three Principles of Data Center Infrastructure Design Deployment The graphic below depicts a sample data center using ADC's comprehensive line of data center-grade infrastructure...

Ngày tải lên: 10/12/2013, 03:15