data warehousing architecture and implementation choices

Data Warehouse Architecture and Models

... 1Lesson 4Data Warehouse Architecture and Models Trang 2 Explain the features of each type of data by examining where and why it is used  List the data models that may already exist in a company and ... users  Examine data needed  Ascertain data availability  Determine data frequency  Decide the refresh cycle Trang 8Types of Warehouse Data Fact data - Measures  Dimension data - Query drivers ... the two common data warehouse Trang 3Warehouse Architectures Enterprise-wide solution  Data mart solution  Combined solution Trang 4Enterprise Data Warehouse SolutionTrang 5Data Mart Solution

Ngày tải lên: 25/04/2013, 20:33

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INFORMATION FOR SUCCESS - Customers Improve Data Warehousing Performance and Lower Costs with Oracle Exadata pdf

... Improve Data Warehousing Performance and Lower Costs with Oracle Exadata September 2012 [...]... incremental backups, completing seven-terabyte backups in only three hours on Oracle Exadata Database ... Oracle Exadata Database Machine x 2-2 HC Full Rack With the implementation, E-Plus compressed data volume by 55% to prepare for future data growth In addition,... environment and optimize ... considered several database performance solutions—including Oracle Exadata, Teradata, and IBM Netezza,” said Pascal Assaad, IT director, Digicel Jamaica Oracle Exadata Database Machine

Ngày tải lên: 23/03/2014, 08:21

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data warehousing architecture andimplementation phần 2 potx

... Integrated Data Integrated Data Subject-Oriented Subject-Oriented Differences Static Data Volatile Data Historical Data Current Data Summarized Data More Detailed Data. .. legacy ... warehouses, the data in Operational Data Stores are volatile, current,... over time A Data Warehouse Contains Both Atomic and Summarized Data Data warehouses hold data at different ... manage, implement, and use a data warehouse, the term data warehouse itself refers to a large, read-only repository of data. At the very heart of every data warehouse lie the large databases that

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 3 pdf

... multiple, unrelated data marts Metadata Administrator The metadata administrator defines metadata standards and manages the metadata repository of the warehouse... enterprise Data warehousing, with ... aggregate strategy, and the metadata repository contents are finalized Metadata play an important role in data warehousing projects and... support the data warehouse and constantly monitors ... projects but are particularly dangerous in data warehousing because of the scale and scope of warehousing projects. • Data warehouse design. Data warehousing requires a new set of design techniques

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 4 ppsx

... Operational Data Store architecture Trang 7Figure 4-4 The Data Warehouse and the Operational Data corresponds to data as of a specific point in time How Do I Manage or Control a Data Warehouse ... the warehousing team with an understanding of: • the required warehouse architecture; • the appropriate phasing and rollout strategy; and • the ideal scope for a pilot implementation The data ... functionality, or both! The warehousing environment and design must both be scalable to deal with increased demand as needed Reward your Team Data warehousing is hard work, and teams need to know

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 5 pdf

... • • Data entry error A genuine error is made during data entry The wrong data are stored in the database Data item is mandatory but unavailable A data item may be defined as mandatory ... Data warehouses and data mart. Define the intended deployment of data warehouses and data marts for each rollout. Indicate how the different databases are related (i.e., how the databases feed ... data warehouse, the data marts, and the intended users for each rollout. This has implications on the technical architecture requirements of the warehousing project. Evaluate Development and

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 6 ppsx

... the acceptance and usability of the warehouse Acquire and Install Data Access and Retrieval Tools Acquire and install the selected data access tools in the appropriate environments and machines ... warehouse architecture Causes of Data Errors An understanding of the causes of data errors makes these errors easier to find Since most data errors originate from the source systems, source system database ... assessment and improvement of data quality, it is unrealistic to expect any single program or data quality product to find and correct all data quality errors in the operational systems or in the data

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 7 pdf

... and delivering information within the enterprise Data Modeling Tools Data modeling tools allow users to prepare and maintain an information model of both the source database and the target database ... Prism Prism Warehouse Directory Data Access and Retrieval Tools Data warehouse users derive and obtain information through these types of tools Data access and retrieval tools are currently ... relationships and patterns in warehouse data, a clean data warehouse will always produce better results than a dirty warehouse Dirty data may mislead both the data mining tools and their users

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 8 ppsx

... set standard formats and definitions for all the data items it will receive Data providers extract data from their respective operational systems and submit these data, using standard data storage ... record metadata relating to the data structure of a dimensional data warehouse or data mart into the tool Warehouse Designer then uses the metadata as the basis for generating the SQL Data Definition ... been written or said about the importance of metadata, there is yet to be a consistent and reliable implementation of warehouse metadata and metadata repositories on an industry-wide scale To address

Ngày tải lên: 14/08/2014, 06:22

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data warehousing architecture andimplementation phần 9 pps

... delete data from the data warehouse or the data mart Using Derived Columns R/OLAPXL allows you to enter formulas to derive new values based on data retrieved from the data warehouse or data mart ... selecting the Schema, you select the database tables from which you will retrieve data Once a Schema has been selected, R/OLAPXL loads the appropriate data and transforms the MS Excel worksheet ... past, the retrieved data should still be visible on the worksheet Running the report causes R/OLAPXL to retrieve the requested data from the database Any previously retrieved data are overwritten

Ngày tải lên: 14/08/2014, 06:22

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Ultra Wideband Communications Novel Trends System, Architecture and Implementation Part 1 doc

... Ultra Wideband Communications: Novel Trends – System, Architecture and Implementation, Edited by Mohammad A Matin p cm ISBN 978-953-307-461-0 free online editions of InTech Books and Journals ... Estimator-Correlator Concept 65 Antti Anttonen, Aarne Mämmelä and Subbarayan Pasupathy Part Hardware Architecture and Implementation 89 Chapter Ultra-Wideband RF Transceiver Design in CMOS Technology 91 Lingli ... Amplifiers From Innovative Technology to Standard Products 213 Andrey Kistchinsky Chapter 12 A Method for Improving Out-Of-Band Characteristics of a Wideband Bandpass Filter in an LTCC Substrate 233...