DATA WAREHOUSE

What is Data Warehouse?

Data Warehouse is the collection of data from heterogeneous source used for analytical reporting , data analysis. Data Warehouse are central repositories of integrated data from one or more disparate sources.Data Warehouse help client/customer/developer to get good high level understanding to implement a successful data warehouse project.

A data warehouse have following properties
1.Subject-oriented,
2.Integrated,
3.Time-variant and
4.Non-volatile collection of data


A data warehouse is a copy of transaction data specifically structured for query and analysis.

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CYBER SECURITY :CRYPTOGRAPHY

CRYPTOGRAPHY

Crypto means Secret and Graphy means writing so cryptography means secret-writing 

                                                           or 

Cryptography is an art of transforming Plain-text (meaningful message) into Cipher-text (not meaningful message) and then re-transforming that message back to protect it from third party that can be hacker, cracker anyone.

As it is possible that encrypted message can sometimes be broken by Crypt-analysis, on the other hand cryptography techniques are virtually unbreakable. 

Some Basic concepts which are useful for Cryptography are:-

1. Cryptanalysis - Code-breaking but without knowledge of key.
2. Cipher - An Algo used to transform plain-text to cipher-text by transposition or substitution.
3. Key - Secret information known to the sender and receiver only.
4. Encode - Process of converting plain-text to cipher-text.
5. Decode - Process of converting cipher-text to plain-text.
6. Cryptology - Cryptography + Cryptanalysis.

As the use of Internet and other forms of electronic communication becoming handy day-by-day so the security of such communication is also becoming more important. Cryptography is used to protect e-mails, credit card information bank transactions corporate data governmental information. one of the most popular cryptography system used on the internet is Pretty Good Privacy because of its effectiveness.

Modern Cryptography concerns with following main objectives :-

• Authentication of legitimate entities 

• Confidentiality

• Integrity

• Non Repudiation(denial of service) 

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Features Of Cognos 10.2 Architecture

Features Of Cognos 10.2 Architecture 

In cognos 10.2 , IBM revised some features for the user for the flexibility , scalability of this reporting tool.Following are the some Features-

1. To Integrate Cognos 10.2 with the existing IT infra structure on multiple platform , they added the feature of platfrom independent technology like XML,SOAP,WSDL.
2. Cognos 10.2 have common dispatcher.
3. Cognos 10.2 supports leading relational Databases.
4. Cognos 10.2 supports OLAP and Dimensionally modeled relational cubes.
5. Cognos 10.2 did not need any client installation required to perform day to day  report and server administration to the application.
6. Cognos 10.2 supports leading RDBMS  for content Management i.e. DB2, Oracle and MSSQL.
7. Cognos 10.2 supports multiple web server types i.e IIS, Apache
8. Cognos 10.2 is open and Extensible.

Following  are some other features of Cognos 10.2

• Common dispatcher 
• Scalability 
• availability 
• Multi Lingual Capabilities
• Platform Independent 

XML-Extensible Markup Language 

SOAP- Simple Object Access Protocol 

WSDL-Web Services Definition Language 

 

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