Teradata Material

An  ODS  stands for - O perational  D ata S tore. ODS is a database which is designed to integrate data from multiple sources for addi...

Fact - A fact table typically has two types of columns, foreign keys to dimension tables and measures those that contain numeric facts. A ...

Dimension - A dimension table typically has two types of columns, primary keys to fact tables and textual\descreptive data. Types of...

Staging area is place where we the hold temporary tables on data warehouse server. Staging tables are connected to work area or fact t...

 Below are the types of schema in dimensional modeling with their advantages and disadvantages:- Star schema  :- A logical structure that...

Definition of datamart :– Datamart is a subset of a Data Warehouse that supports the requirements of a particular department or business...

Data mining  is a process of extracting hidden trends within a datawarehouse. Example –An insurance datawarehouse can be used to mine ...

Below are the advantages of data warehousing:- Increase customer profitability Increase customer profitability Cost effective deci...

Below is the Data Warehouse project lifecycle:- • Project Planning • Business Requirement Definition(SRS) • Technical Architecture...

Below are the components of a data warehous e :- Source databases /systems (Example - Legacy, relational, text or external sources) Data...

Data Warehousing is a process to properly assemble and manage data from various sources to answer business questions not previously possib...

About GLOBAL TEMPORARY:  You are working in a Teradata database application.  You have to CREATE a table and insert some records for perfor...

You are working in a Teradata database application. You have to CREATE a table and insert some records for performance analysis. You have t...

COALESCE is used to check if the argument is NULL, if it is NULL then it takes the default value. It will check for NOT NULL values sequent...