Topic 1 Flashcards
Collection of
data organized
in a manner
that allows
access,
retrieval, and
use of that
data
Database
Collection of
unprocessed
items
* Text
*Numbers
* Images
* Audio
* Video
Data
- Processed data
- Documents
- Audio
- Images
- Video
Information
is a tool used to organize, store,
retrieve, and communicate (report on) group of
related information.
database
A database is a tool used by businesses to
manage the huge amount of ___ required to run
the business.
data
Databases consist of 4 main Objects
- Tables
- Queries
- Forms
- Reports
store data in rows and columns
Tables
retrieve and process data
Queries
control data entry and data views; is a customized manner of inputting data into a
database or representing data on a screen.
Forms
summarize and print data.
Reports
___ _____often called a database management system (DBMS), allows users to:
- Create a computerized database
- Add, modify, and delete data
- Sort and retrieve data
- Create forms and reports from the data
Database software
identifies the quality of the data
Data integrity
points out the
accuracy of a computer’s output depends on the
accuracy of the input
Garbage in, garbage out (GIGO)
Valuable information should have the following
characteristics:
Accurate
Verifiable
Timely
Organized
Accessible
Useful
Cost effective
Data is organized in layers
– Files, records, fields, characters
is one byte
– Numbers, letters, space,
punctuation marks, or
other symbols
character
is a combination
of one or more related
characters
– Field name
– Field size
– Data type
field
is a group of related fields
record