FD1- Hierarchical Structure of Data Flashcards
1
Q
What is data?
A
Raw facts (No meaning)
2
Q
Why is data important?
A
To be processed in order to be meaningful
Processed data=Information
Information used to make decisions
3
Q
Importance of good data?
A
Foundation of decision making.
Processing data accurate —> quality of decision is good
4
Q
From smallest to biggest, list out the data hierarchy.
A
Bit
Byte/Character
Field
Record
Table
Database
5
Q
What is Bit?
A
smallest data unit
consists 0 and 1
6
Q
What is character/Byte?
A
consists of bits
Cannot exceed 8 bits
7
Q
What is field?
A
consists of bytes
Hold a single values
8
Q
WHat is Record?
A
Collection of related field
Siingle row
9
Q
What is table
A
A collection of records
Files
10
Q
What is Database
A
Storage medium for files
integrated through DBMS
