Page 183 - DCAP609_CLOUD_COMPUTING

Cloud Computing

Notes
easily and make changes as needed. There are two views of information: physical and
logical. The physical view deals with how information is stored on storage devices, while
the logical view deals with how you arrange information while you' re working with it.
Everyone has his or her own files of information. And the software that each person uses
to maintain the information in the file is called a file management system. There are some
basic problems with using files and file management systems. Firstly, the same information
may be stored in many different places. This problem is known as data redundancy. For
example, a course book's chapter names appear in two different places. Secondly, because
the same information exists in several places, there is the issue of data integrity. Data
integrity deals with the correctness of the information. Although the author's title is
correct in the chapters file, it is not correct in the addresses file; this is the loss of data
integrity.

Because of these problems, all the organization's information stored in one place and a
software is proved that anyone can use to access any of the information. These concepts are
called database and Database Management System (DBMS). A database is a group of
related files, and a DBMS is the software designed to create, store, and manipulate a
database.
One facet of a database management system is processing inserts, updates, and deletes.
This all has to do with putting information into the database. Changes in data representation
will often be needed as a result of changes in query, update, and report traffic and natural
growth in the types of stored information. A relational database is a big spreadsheet that
several people can update simultaneously.
The relationships between the many individual records stored in a database can be
expressed by several logical structures. DBMS are designed to use these structures to
execute their functions. One of these structures is relational. Relational database allows
the user to think in the form of two-dimensional tables, which is the way many people see
data reports. This structure is most popular for DSS databases.
The database approach offers a number of important and practical advantages to an
organization. Reducing redundancy improves the consistency of data while reducing the
waste in storage space. Sharing data often permits new data processing applications to be
developed without having to create new data files. In general, less redundancy and greater
sharing leads to less confusion between organizational units and less time spent resolving
errors and inconsistencies reports. The database approach also permits centralized control
over data standards, security restrictions, and integrity controls. This facilitates the natural
evolution and change of information systems and organizations. Databases are very
commonly used in everyday life. The relational model of databases provides a very
simple way of looking at data structured.
Questions:
1. Discuss the importance of organization of information in database management in
a group of five students.
2. Do a SWOT analysis of database approach?
Source: http://www.tojet.net/articles/v3i1/313.pdf

11.6 Summary

A database accessible to clients from the cloud and delivered to users on demand via the
Internet from a cloud database provider’s servers.

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