Introduction to Information Systems Systems Development Life Cycle SDLC1: Planning & Analysis SDLC2: Design SDLC3: Implementation SDLC4: Operations & Maintenance
Types of Information Systems Transaction Processing System Management Information System Structure Top – Overall Report Middle – Comprehensive Report Lower – Detailed Report
Essential Characteristics of DSS Broad-based approach to supporting decision making Human/machine interface where human retains control over the decision making process Support decision-making for solving structured, semi- structured and unstructured problems Utilization of appropriate mathematical and statistical models Query capabilities to obtain information by request- interactive mode Output directed to organization personnel at all levels Integrated subsystems Comprehensive database Easy-to-use approach Adaptive system over time Project Management Building Data Centres Centralised Data Environment Decentralised Data Environment
Database Management systems DBMS Concepts Data redundancy and inconsistency Difficulty in Accessing data Integrity Problem Atomicity Problem Concurrency Problem Security Problem Relational Database Query Language – Structured
ORACLE
DATA WAREHOUSING AND DATA MINING Data Warehouse Architecture It is a way of representing the overall structure of data, communication, processing & presentation that exists for end user computing within the enterprise
Data Warehouse Options Scope of Data Warehouse Data redundancy Types of end user
Developing Data Warehouses
Data Mining OLAP
IT APPLICATIONS AND BANKING BANKING SOFTWARE
Integrated Banking System Centralized Banking Solution Features of an Online Banking Web Site IT Services in Banking – Vendor Selection & Retention Criteria
ELECTRONIC CLEARING & SETTLEMENT SYSTEMS MICR/OCR Clearing System
Debit Clearing System
Credit Clearing System
Real Time Gross Settlement (RTGS)
Structured Financial Messaging System (SFMS)
PLASTIC MONEY
Credit Cards
Debit Cards
Smart Cards
ELECTRONIC COMMERCE & BANKING Dimensions of E-business
Electronic Commerce
E-commerce Building Blocks
E-banking
The Call Centre
EBPP
NETWORKING SYSTEMS DATA COMMUNICATIONS
Electronic Mail
Internet Connectivity
Local Area Networking
Remote Access Services
WAN TECHNOLOGY OVERVIEW Frame Relay Overview
ISDN Overview
ATM Overview
VSAT Network System
TCP/IP AND INTERNET The layers of the TCP/IP Reference Model Makes the internetwork possible by providing common services over the diverse set of under laying protocols and physical network hardware. Four layers viz Application, Transport, Internet and host to Network layer; One layer is not specified. IP Addressing A Unique identifier to node Four Octet (192.168.100.1)
INFORMATION SYSTEM SECURITY & AUDIT COMPUTER SECURITY