"Just wait, Gretel, until the
moon rises, and then we shall see the crumbs of bread which I have strewn
about, they will show us our way home again."
Hansel
and Gretel (Brothers)
A sad scene in a fairy tale, a
disaster in real life. Like Hansel or Gretel, if you have data at your
disposal, but it is simply crude pile, where you can’t associate one datum with
the next, then you don’t have information. Disorganized data like vulnerable
perishable food is cumbersome and quickly becomes an unusable commodity, devoid
of providing long-term benefits. Molding information out of data by laying out
tables and building database is an art form that we now call Database
Management System (DBMS).
DBMS’s
are everywhere; in your cell phone to your GPS’s to satellites hovering in
space. And who can forget the luxurious convenience of package tracking?
Whether you waiting for an impulse buy off the internet or a confidential
document , your belonging, as it moves from one station to another, one hand to
another, from one airport to the next, the assurance, as MasterCard says, is
“priceless”. This modern day miracle which has become a necessity and a vital
part of every courier service is made possible by DBMS technology.
There are
many approaches to creating a DBMS: hierarchical, network, relational and
object oriented.Hierarchical model organizes the data in a top to bottom
tree-like structure. Retrieving data is a quick affair that is, it is a speedy
system but maintenance is cumbersome. IMS, Information Management System
is probably the most famous hierarchical model.
The
network model, sometimes informally called the "star model' also adopts a
navigational approach like hierarchical. However, since several paths are
possible, it is less restrictive. Hierarchical and network are the least used
DBMS's approaches. The relational model uses rows and columns to store data; in
other words it employs a table structure. The tables of records that are
generated "connect" with each other via common relationship values.
This model is most commonly used today. MySQL, DB2, Oracle are examples of
relational model DBMS's. The object oriented structure is most suitable for multimedia
based applications. It works well with JAVA and C++, and hence the name object
oriented.
IT (pun
intended) is no longer an information highway but a superhighway with dwindling
security alley ways. In corporate society
where data has become a tangible commodity, where our information is networked
directly or indirectly with the internet and fears of identity theft are on
everyones mind, DBMS’s need to be developed to be ‘faster, higher and
stronger’.
References
Brothers,
Grimm. "Short Stories: Hansel and Gretel." East Of The
Web. N.p., Feb 2000. Web. 8 Jul 2012.
not
defined. Trail of Bread Crumbs. Graphic. TV Tropes
Wurman,
Richard S. Information Anxiety. New York: Doubleday, 1989. Print.
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