What is a Database?
|
A Database is a place
where information is stored. Examples of databases
include formal programs that create databases for
quantitative analysis or more informal databases such as
a recipes, shopping lists, or task lists. These kinds of
informal databases help organize knowledge and actions,
just as the more formal types of databases, for example
on population and breast or prostate cancer statistics in
the United States. We can compare a time series data on 2
to 3 decades of population census statistics and find out
if there is an increase or decrease in the growth of
certain illnesses or other variables, such as employment
growth, housing growth. When we have a profile of the
growth or decline of certain measurement then policy
makers can make rational decisions about allocations of
resources. |
Table The purpose of the database is to store information; the place where data is stored is called a table. A table consists of row and columns. A row, also called a record, contains information about each item you are tracking in the table. A column, also known as a field, stores each characteristic you are tracking in the table. |
Queries [Searches] Queries are quick,
interactive ways to retrieve information from the
database. |
Form Forms offer a way to access information in database tables. Forms often display the same fields as tables, but they display only one record at a time. |
Reports To retrieve information about the database, you use a report. A report is a procedure that extracts information in the database, formats the information with background text, and sends it to an output device (usually in the printer). |
Copyright © 1998 M. Levine. All rights
reserved.
Revised: September 06, 2001.