Topic 1 Flashcards

1
Q

Collection of
data organized
in a manner
that allows
access,
retrieval, and
use of that
data

A

Database

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2
Q

Collection of
unprocessed
items
* Text
*Numbers
* Images
* Audio
* Video

A

Data

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3
Q
  • Processed data
  • Documents
  • Audio
  • Images
  • Video
A

Information

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4
Q

is a tool used to organize, store,
retrieve, and communicate (report on) group of
related information.

A

database

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5
Q

A database is a tool used by businesses to
manage the huge amount of ___ required to run
the business.

A

data

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6
Q

Databases consist of 4 main Objects

A
  1. Tables
  2. Queries
  3. Forms
  4. Reports
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7
Q

store data in rows and columns

A

Tables

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8
Q

retrieve and process data

A

Queries

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9
Q

control data entry and data views; is a customized manner of inputting data into a
database or representing data on a screen.

A

Forms

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10
Q

summarize and print data.

A

Reports

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11
Q

___ _____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

A

Database software

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11
Q

identifies the quality of the data

A

Data integrity

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12
Q

points out the
accuracy of a computer’s output depends on the
accuracy of the input

A

Garbage in, garbage out (GIGO)

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13
Q

Valuable information should have the following
characteristics:

A

Accurate
Verifiable
Timely
Organized
Accessible
Useful
Cost effective

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14
Q

Data is organized in layers

A

– Files, records, fields, characters

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14
Q

is one byte
– Numbers, letters, space,
punctuation marks, or
other symbols

A

character

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15
Q

is a combination
of one or more related
characters
– Field name
– Field size
– Data type

A

field

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16
Q

is a group of related fields

A

record

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17
Q

uniquely identifies each record

A

primary key

18
Q

is a collection of related records

19
Q

refers to the procedures that
keep data current

A

File maintenance

20
Q

Users add new records to a file when they obtain
new data ( T or F)

21
Q

Users modify a record to correct inaccurate data
or update old data ( T or F )

22
Q

When a record no longer is needed, a user deletes
it from a file (t or f)

23
compares data with a set of rules or values to find out if the data is correct
Validation
24
* Each department has its own set of files * Used for many years * Have data redundancy * Isolate data
File processing system
25
are used by a manager of any small organization to track necessary data
Filesystems
25
* Programs and users share data * Reduce data redundancy * Improve data integrity * Share data * Allows easier access * Reduces development time * Can be more vulnerable
Database approach
26
contains data about each file in the database and each field in those files
data dictionary
27
provides a GUI to assist users with retrieving data
Query by example (QBE)
28
provides several tools that allow users and programs to retrieve and maintain data in the database
DBMS
29
consists of simple, English-like statements that allow users to specify the data to display, print, or store
query language
30
is a window on the screen that provides areas for entering or modifying data in a database
form
31
allows users to design a report on the screen, retrieve data into the report design, and then display or print the report
report generator
32
provides means to ensure that only authorized users access data at permitted times *Access privileges *Principle of least privilege
DBMS (Database Management Systems)
33
consists of rules and standards that define how the database organizes data
data model
34
stores data in tables that consist of rows and columns
relational database
35
is a link within the data
relationship
35
is a query language that allows users to manage, update, and retrieve data
Structured Query Language (SQL)
36
stores data in objects
object-oriented database (OODB)
37
is a huge database that stores and manages the data required to analyze historical and current transactions
data warehouse
37
can store data in more than two dimensions of data – Sometimes known as a hypercube – Can consolidate data much faster than a relational database
multidimensional database
37
Decides on proper field placement, defines data relationship, and identifies users’ access privileges
Database Analyst (DA)
37
Creates and maintains the data dictionary, manages security, monitors performance, and checks backup and recovery procedures
Database Administrator (DBA)
37
is the process of sorting through large data sets to identify patterns and relationships that can help solve business problems through data analysis
Datamining