Data Types Flashcards
1
Q
what is a character set?
A
The set of symbols that may be represented in a computer at a particular time
2
Q
why do we use hexiecimal?
A
- hexiedecimal is much easier to read and remember
-it is quicker to write and type
-less chance of making an error
3
Q
what is ASCII
what is a MAC address
A
American standard code for information interchange
The address of a network Card
4
Q
what is UNI cod
whats an advantage of UNI code?
A
a standard character set that replaces the need for all different sets. it incorporates almost all characters in the world
- every language in the world, every mathematical and scientific symbol can be represented.
5
Q
what is
1+1+1
1+1
0+1
0+0
A
1+1+1= 1 carry 1
1+1= 0 carry 1
0+1=1
0+0=0
6
Q
what is referntial integrity ?
A
referential integrity refers to the relationship between tables , and provides consistency through the tables
