Database Design Paper Essay

Database Design Paper

?A database is a structured collection of records or data that is stored in a computer
system. In order for a database to be truly functional, it must not only store large
amounts of records well, but be accessed easily. In addition, new information and changes
should also be fairly easy to input.? (; to ensure usefulness over the
long-term, databases should be built with high data integrity and the ability to recover
data if the hardware fails. Information that has been corrupted or destroyed serves no
purpose within a business structure.

Being the Armed Forces is like being a field value in one giant database. Everything from
the gear we are issued to how we are identified as an ?individual? (ssn#) is a scannable
number to be coded, referenced, and utilized by anyone with proper clearance.

?The database architecture is the set of specifications, rule, and processes that dictate
how data is stored in a database and how data is accessed by components of the system.?
( Database architecture type s can be broken down into three broad
categories, each of which can have several subcategories: One Tier, Two Tier-
client/server, and ?N? Tier- client/server.

The One Tier architecture is best suited to the single user and relatively small amounts
of data. It runs on the user?s local machine and references a file that is stored on that
machine?s hard drive, thus using a single physical resource to access and process


For multiple users and small scale applications Two Tier client/server architecture would
be better suited than One Tier architecture. Users interact through a GUI (graphical user
interface) to communicate with the database server across a network via SQL (structured
query language.

For the large scale applications, ?N? Tier client/server architecture must be adopted. The
client/server model expands to include a middle (or business) tier, which is an
application server that houses the business logic. The middle tier translates client calls
into database queries as well as translating data from the database into client data in
return. The client and server never actually talk to one another directly.

The database architecture I use at work, I would qualify as ?N? Tier client/server
architecture. When entering or leaving base, all military personal must have their IDs
scanned. This information is checked against a central database by going through a middle
tier to prevent direct contact with the military mainframe, both for security and volume

In a relational database, the data in different tables is mapped with relations.
?Information can be accessed or added without reorganizing the tables. A table can have
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