Unit – 10
Accounting and Database System
Q1.
What is Data Base and Data Base Management System?
Ans: Data Base System: It is a computerized system whose overall
purpose is to store information and to allow users to retrieve and update that
information on demand.
Data Base Management System: It is a collection of programs required to store and retrieve data
from a data base is called a data base management system (DBMS). A Data Base
Management System can organize process and present selected data elements from
the data base.
Q2.
What are the advantages and disadvantages of data base system?
Ans. Following are the advantages of data base system:
a. The integration and sharing of data files minimizes the duplication
and redundancy of data to a great extent.
b. Integration of data files also results in a considerable saving of
storage space and in data entry and data storage costs.
c. Faster preparation of information to support non-recurring tasks
and changing conditions is possible.
Following
are the disadvantages of data base system:
a. More complex and expensive hardware and software resources are
needed.
b.
Sophisticated security measures must be implemented
to prevent unauthorized access of sensitive data in online storage.
c. Hardware and software failures might result in destruction of vital
data base contents.
Q3.
What is structured query language (SQL)?
Ans. Structured Query Language is a standard computer language for
accessing and manipulating databases. The maintenance of commercial databases
have been successful because it conveniently supports the Structured Query Language.
Q4.
Discuss the Data Processing Cycle.
Ans: Data Processing Cycle refers to the process of transforming raw
data into useful information. The cycle entails a process of sequential steps,
including input, processing, output and interpretation.
Q5.
Mention three distinctions between information and data.
Ans: Following are the distinctions between information and data:
a. Data is used as input for the computer system but information is
the output of data.
b. Data is unprocessed facts figures but information is processed
data.
c.
Data doesn’t depend on Information but information
depends on data.
d. Data is not specific but information is specific.
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