Thursday, 1 December 2016

Understanding Teradata Wallet (tdwallet)

Understanding Teradata Wallet (tdwallet)
Teradata Wallet is a facility for storage of  sensitive/secret information, such as Teradata Database user passwords. Users save and retrieve items by using the facility. 
Wallet or tdwallet is the latest piece or pack of Terdata software, introduced  in latest Teradata Tools and Utilities packages those are version 14.00/15.00 and later, where the customers can store passwords/credentials (or other confidential information)  securely and safely on client computers or application servers. This stored information is used while signing in to the Teradata Database using any utility or piece of software that uses Teradata .

Monday, 28 November 2016

Teradata Intelligent Memory (TIM)- Running at the speed of Business

Teradata Intelligent Memory (TIM)- Running at the speed of Business

Overview of Teradata
Teradata is a RDBMS (Relational Database Management System). This system is solely based on off-the-shelf (readymade) symmetric multiprocessing (SMP) technology combined with communication networking, connecting SMP systems to form large Massively parallel processing systems (MPP). It is wholly used to manage large data warehousing operations. Teradata acts as a single data store that can accept large number of concurrent requests from multiple client applications.
Parallelism along with load distribution shared among several users, Execution of complex queries with a maximum of 256 joins, Parallel efficiency, Complete scalability , Teradata Intelligent Memory are some of Teradata’s widely shown Features.

Saturday, 26 November 2016

Teradata Disk Space Queries

Teradata Disk Space Queries
1) To find AMP usage and CPU utilization on TD server.

  You could query DBC.Tablesize, DBC.ProfileInfo, DBC.AllRoleRights, and  
  DBC.RoleInfo and others. The query should return on the AMP Usage and CPU  
  Utilization The following query is dbc.ampusage                 

  Select Account Name, UserName, sum(diskio),sum(cputime)
from    dbc.ampusage
  Group by 1,2;

Monday, 21 November 2016

Netezza Advanced Security

Netezza Advanced Security

1.System Security
SYSTEM(ADMIN)=> CREATE USER dso;
CREATE USER
SYSTEM(ADMIN)=> GRANT MANAGE SECURITY TO dso;
GRANT
SYSTEM(ADMIN)=> GRANT USER TO dso;
GRANT
2.User Login Control

Tuesday, 15 November 2016

Client Communication with Teradata

Client applications can connect to Teradata Database using one of the following methods:
Network-attached through a Local Area Network (LAN)- Workstation Attachment Methods
Channel-attached through an IBM mainframe- Mainframe Attachment Method

Workstation Attachment Methods
Workstation-attached methods include:
.NET Data Provider for Teradata
Java Database Connectivity (JDBC)
OLE DB Provider for Teradata
Open Database Connectivity (ODBC)
Teradata CLIv2 for workstation-attached systems

Wednesday, 27 January 2016

Introduction to Netezza


Introduction
Success in any enterprise depends on having the best available information in time to make sound decisions. Anything less wastes opportunities, costs time and resources and can even put the organization at risk. But finding crucial information to guide the best possible actions can mean analyzing billions of data points and petabytes of data, whether to predict an outcome, identify a trend or chart the best course through a sea of ambiguity. Companies that can get this type of intelligence on demand are able to react faster and make better decisions than their competitors.