Webinar : Information Technology

For CAT 2013 Call Getters

Vivek Pandey

Saurabh Maheshwari

A webinar by PR Cell, IIM Rohtak for Preparation for WAT-PI process, Admissions-2014

Session Agenda

The objective of this webinar is to guide the call getters on Information Technology area for WAT-PI process.

Information Technology

Engineering Background

Work Experience

IT – Engineering Background

Database concepts

OOP Concepts and Programming Languages

OS Concepts

Networking & Security

Academic Projects & Training

Miscellaneous

Database Concepts

A database is a collection of information organized in such a way that a computer program can quickly select desired pieces of data

Field , records and file

Types of DBMS:

1 Hierarchical DBMS e.g. – IBM_DBMS in 1968s

2 Relational DBMS e.g. – Oracle, Microsoft SQL Server

3 Object-oriented DBMS e.g. – Online hospital DB with graphs

DB Languages

DDL

Create, Drop, Alter, Referential integrity statements

DML

Select, Insert, Update, Delete

Query Languages To retrieve information from a database

SQL, YQL, XQuery, MDX etc.

Concepts

Data Warehouse relational database that is designed for query and analysis

rather than for transaction processing

UML Diagram

Data Mining

Process of discovering patterns in large data sets involving methods at

the intersection of artificial intelligence, machine learning, statistics,

and database systems.

Anomaly detection

Clustering

Classification

Pattern Matching

OOP Concepts and Programming Languages

OOP

Inheritance

Polymorphism

Encapsulation

Abstraction

Overloading

High Level Language

programming language with strong abstraction from the details of the computer

Low Level Language

programming language that provides little or no abstraction from a computer's instruction set

Compiler, Interpreter and Assembler

1st Normal Form The Requirements

The requirements to satisfy the 1st NF:

Each table has a primary key: minimal set of attributes which can uniquely identify a record

The values in each column of a table are atomic (No multi-value attributes allowed).

There are no repeating groups: two columns do not store similar information in the same table.

1st Normal Form Example

Un-normalized Students table:

Normalized Students table:

Student# AdvID AdvName AdvRoom Class1 Class2

123 123A James 555 102-8 104-9

124 123B Smith 467 209-0 102-8

Student# AdvID AdvName AdvRoom Class#

123 123A James 555 102-8

123 123A James 555 104-9

124 123B Smith 467 209-0

124 123B Smith 467 102-8

2nd Normal Form The Requirements

The requirements to satisfy the 2nd NF:

All requirements for 1st NF must be met.

Redundant data across multiple rows of a table must be moved to a separate table.

The resulting tables must be related to each other by use of foreign key.

2nd Normal Form Example

Students table

Registration table

Student# AdvID AdvName AdvRoom

123 123A James 555

124 123B Smith 467

Student# Class#

123 102-8

123 104-9

124 209-0

124 102-8

3rd Normal Form The Requirements

The requirements to satisfy the 3rd NF:

All requirements for 2nd NF must be met.

Eliminate fields that do not depend on the primary key;

That is, any field that is dependent not only on the primary key but also on another field must be moved to another table.

3rd Normal Form Example

Students table:

Student table: Advisor table:

Student# AdvID AdvName AdvRoom

123 123A James 555

124 123B Smith 467

Student# AdvID

123 123A

124 123B

AdvID AdvName AdvRoom

123A James 555

123B Smith 467

3rd Normal Form Example Cont.

Students table:

Registration table: Advisor table: Student# Class#

123 102-8

123 104-9

124 209-0

124 102-8

AdvID AdvName AdvRoom

123A James 555

123B Smith 467

Student# AdvID

123 123A

124 123B

OS Concepts Networking And Security

OS – What is so operating in them??

Types of OS

Difference between UNIX and LINUX

Windows v/s UNIX based OS

Linux Shell Structure

Network & Security

Network Types LAN

WAN

PAN

MAN

Internet

Network Security e.g. – Firewall, Antivirus Software, SSID Network Name, Network Analyzers, Encryption etc.

Miscellaneous

Difference b/w IT and CS.

Father of Computer?

Why MBA after IT?

How do you align IT with MBA?

Subject of Interest and Qs related to that.

Latest Trends in IT – cloud computing etc.

IT in News..

IT – Work Experience About the organization

Board / Management Employee strength Any noteworthy event/news in recent past Group composition ( if present ) Quality Standards & Best Practices followed

About the Industry Competitor companies & their top management Performance – Industry wise & company wise Verticals STPIs , SEZs etc. Attrition rate and its justification Industry body - NASSCOM

IT Industry Evolution

IT Sector - Segments

IT – Growth Drivers

Talent Pool – 4.7 million ( FY13E)

IT Penetration & Government Projects

Robust IT Infrastructure

STPI and SEZs

IT Offshore spending – CAGR of 8% ( FY 11-13)

IT Industry - Verticals

BFSI

Banking , Financial Services and Insurance

BFSI is a key business vertical for the IT-BPM Industry

Export Revenue generated - $31 billion ( FY13)

41 % of total IT-BPM exports from India

IT spend on BFSI vertical expected to reach $ 3.5 billion by FY14

Contribution to India’s GDP ~ 8 %

Trends in Verticals

Market size of growing Verticals

IT Industry - Performance

IT Industry – Export Market

Export Across Verticals

Major Import Markets

GIC/Captive Centers

Global In-house Centers

Accounts for 16-18 % of IT-BPM revenues

750+ captive centers in India

90% from Europe and North America

GDP contribution – 1%

STPI and SEZs

Growing Technologies

SMAC – Social , Mobile

Analytics and Cloud

Cloud - CAGR of ~ 30%

$650-750 billion (2020E)

Social Media - $250 billion opportunity

Mobility

Big data/Analytics

Attrition rate & Retention Factors

TCS ~ 11% , Infosys ~ 18%

Factors Pay packages

Career level growth

Relationship with supervisors

Work pressure

Retention Creating large talent pool

Emergence of Tier II/III cities

Better Work Environment & pay structure

Flexibility

Big Five

CEO : N Chandrase-karan

Revenue : $ 11.57 billion

Employees : 285,250

CEO : S.D. Shibulal

Revenue : $ 7.39 billion

Employees : 160,227

CEO : Francisco D’Souza

Revenue : $ 8.84 billion

Employees : 171,400

CEO : T. K. Kurien

Revenue : $ 6.87 billion

Employees : 147,216

CEO :Anant Gupta

Revenue : $ 4.3 billion

Employees : 88,332

NASSCOM

Trade association of Indian IT –BPO Industry

Founded in 1988 , Non-Profit Organization Facilitates business and trade in software

and services Encourages research in software technology 1500+ members , 250+ from abroad Member companies domain

Software development/products/services ITeS/BPO E-Commerce

NASSCOM growth

Future Vision

Technical Aspects

Project

Client/Customer

Technologies used

Tools used

Role

Project Life cycle – Approaches & processes

Testing Testing methods

Testing Levels

Testing types

Testing process

Managerial Aspects

Team size

Team/module/project leader – how did you manage the team

Conflicts in the team

How to resolve it

Learning / takeaways from work exp

Some general things Confidence

Attitude

Communication Skills

References

www.nasscom.in

www.ibef.org

http://economictimes.indiatimes.com/

en.wikipedia.org/