Page 100 - DCAP516_COMPUTER_SECURITY

Computer Security

Notes students in a college and we have to store their personal details, marks details, etc., these details
will be recorded in a database.
A collection of programs that enables you to store, modify, and extract information from a
database is known as DBMS. The primary goal of a DBMS is to provide a way to store and
retrieve database information that is both convenient and efficient. Database systems are designed
to manage large bodies of information. Management of data involves both defining structures
for storage of information and providing way for manipulation of data. In addition, the database
system must ensure safety of data.
Good data management is an essential prerequisite to an organisation’s success.
Data is converted into Information
Information is converted into Knowledge
Knowledge is converted into Judgement

Judgement is converted into Decision
Decision is converted into Results
Provided that data is:
1. complete
2. accurate
3. cost-effective
4. timely
5. easily accessible
6. up-to-date.

8.8 Applications of Database System

There are many different types of DBMSs, ranging from small systems that run on personal
computers to huge systems that run on mainframes. Database are applied in wide number of
applications. Following are some of the examples:
Banking: For customer information, accounts, loans and other banking transactions.
Colleges and Universities: For student information, course registration, grades, etc.
Monetary transaction: For purchase of credit cards and generation of monthly statements.
Tele-communication: For keeping records of calls made, generating monthly bills, etc.
Airlines: For reservation and schedule information.

Finance: For storing information about holdings, sales and purchase of financial statements.
Sales: For customers, products and purchase information.
Manufacturing: For management of supply chain.
Human Resource: For recording information about employees, salaries, tax, benefits, etc.
We can say that whenever we need to have a computerized system, we need a database system.
Briefly, a database is a collection of data supporting the operation of an organization. It is,
however, more than this, because it must also:
1. Be substantially non-redundant
2. Be program independent (data independence)

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