Question

With the help of an example explain sequential code and block code.

Hint:

Use sequential codes for identifying unique transactions or records. Use block codes to organize categories or departments systematically.

Answer 1

Sequential Code:
A sequential code is a set of numbers or letters arranged in a logical order, usually incrementing by a fixed value.
These codes do not skip any numbers and are assigned in a sequence, such as serial numbers or roll numbers.
Example:
Invoice Numbers: 101, 102, 103, 104, ...
Employee IDs: E001, E002, E003, E004, ...
\(\Rightarrow\) Each next number or ID is a continuation of the previous one without any gaps.
Block Code:
A block code is a system in which numbers or letters are grouped or reserved in blocks for specific categories, divisions, or departments.
Each block may represent a specific segment and makes categorization easier.
Example:
Product Categories:
100–199 for Electronics
200–299 for Furniture
300–399 for Apparel
\(\Rightarrow\) Code 203 refers to a furniture item; 315 to an apparel item.