2 - Data Organization

Html ebcdic extended binary coded decimal interchange

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Unformatted text preview: – EBCDIC (Extended Binary-Coded Decimal Interchange Code) – Unicode, .. etc. Computers can only understand bits and bytes. BUSI 335 5 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo A Subset of ASCII Code Subset of ASCII Code Char Binary ….. Char Binary : Char Binary Field Char Binary 0111010 F 1000110 R 6 • A representation of one fact representation of one fact 1010010 ; 0111011 G 1000111 S 1010011 0 0110000 < 0111100 H 1001000 T 1010100 1 0110001 = 0111101 I 1001001 U 1010101 2 0110010 > 0111110 J 1001010 V 1010110 3 0110011 ? 0111111 K 1001011 W 1010111 4 0110100 @ 1000000 L 1001100 X 1011000 5 0110101 A 1000001 M 1001101 Y 1011001 6 0110110 B 1000010 N 1001110 Z 1011010 7 0110111 C 1000011 O 1001111 8 0111000 D 1000100 P 1010000 9 0111001 E 1000101 Q 1010001 BUSI 335 • Attributes related to things and events • A field may be a single character or number, or it may be composed of many characters or numbers. • Examples: – student number, birth date, account #, account balance, transaction date, and so on. ….. Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 7 BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 8 Master vs. Transaction Record vs Transaction Record Record Record • Master record...
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