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 ...

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 ...

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 : A sheduling tool is a tool which is used to shedule the datawarehouse jobs...All the jobs which does some process are sheduled using this tool, which eliminates the manual intervension. ...

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

Answer posted by Badri Santhosh on 2005-05-18 09:40:29: Normalization : The process of decomposing tables to eliminate data redundancy is called Normalization.  1N.F:- The table should caontain 

Latest Answer : Normalization:It is the process of efficiently organizing data in a database.There are 2-goals of the normalization process: 1. Eliminate redundant data 2. Ensure data dependencies make sense(only storing related data in a table)First Normal ...