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 Related Questions Data Warehouse is a repository of integrated information, available for queries and analysis. Data and information are extracted from heterogeneous sources as they are generated....This makes it much Latest Answer : As explained by users , i think DWH is repository containing subject-oriented , integrated , nonovalatile and time varient data which helps the management to analysis the business trends and take the appropriate decision to improve the business.It is ... Data Mart is a segment of a data warehouse that can provide data for reporting and analysis on a section, unit, department or operation in the company, e.g. sales, payroll, production. Data marts are sometimes Latest Answer : Data mart is a sub set of datawarehouse and it deals with individual depatments to fufil and support the management system for quick analysis. ... Answered by Puneet on 2005-05-07 04:21:07: ER - Stands for entitity relationship diagrams. It is the first step in the design of data model which will later lead to a physical database design of possible Latest Answer : Entity Relationship Diagrams are a major data modelling tool and will help organize the data in your project into entities and define the relationships There are three basic elements in ER models: Entities are the "things" about which we seek ... Answered by Girinath.S.V.S on 2005-03-17 06:40:48: Snowflake schemas normalize dimensions to eliminate redundancy. That is, the dimension data has been grouped into multiple tables instead of one large Latest Answer : Closely related to the star schema, the snowflake schema is represented by centralized fact tables which are connected to multiple dimensionsIn the snowflake schema, however, dimensions are normalized into multiple related tables whereas the star schema's ... Latest Answer : The data in the dimension tables may change over a period of time. Depending upon how you want to treat the historical data in dimension tables, there are three different ways of loading the (slowly) varying dimensions:1. Type One Dimension: do ... Answered by swetha on 2005-03-30 12:00:33: OLTP Current data Short database transactions Online update/insert/delete Normalization is promoted High volume transactions Transaction Latest Answer : olap->online analytical processing OLAP is a set of specifications which alows the client applications(reports)in retreiving the data from data ware houseoltp->olnline transactional processingOLTP databases are fully normalized and are designed ... Answered by sunitha on 2005-04-28 21:17:53: ETL is extraction,trasformation and loading,ETL technology is used for extraction the information from the source database and loading it to the target database Latest Answer : Data Acquisition technique is now called ETL(Extraction, Transformation and Loading)Extraction-The process of extracting the data from various sources. Sources can be file system, database, XML file, Cobol File, ERP etcTransformation-Transforming the ... Answer posted by Chintan on 2005-05-22 18:46:03: A table in a data warehouse whose entries describe data in a fact table. Dimension tables contain the data from which dimensions are created. Latest Answer : Fact table is the one which contains measures of interest at most granular level.These values are numeric.Ex:sales amount would be a measure .Each dimension table has a single-part primary which exactly corresponds to one of the components of multiparty ... Latest Answer : Real time Data warehousing means combination of hetrogenious databases and query and analysis purpose and Decisionmaking and reporting purpose. ... Answered by Puneet on 2005-05-07 04:24:28: Data mining is a process of extracting hidden trends within a datawarehouse. For example an insurance dataware house can be used to mine data for the most high Latest Answer : Data Mining: Smpler way we can define as DWH(Data Warehouse)+ AI(Artificial Intellegence)used in DSS(Decision Supportive System) ... Tags : Data Mining
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