Author Question: When using the sequential file organization, the addition of rows requires rewriting the file. ... (Read 143 times)

saliriagwu · **on:** Jul 7, 2018

When using the sequential file organization, the addition of rows requires rewriting the file.

Indicate whether the statement is true or false

Question 2

Referencing use-case modeling, a source is an external entity that interacts with the system.

Indicate whether the statement is true or false

alexanderhamilton · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

TRUE
Explanation: In a sequential file organization, the rows in the file are stored in sequence according to a primary key value. Adding a row requires rewriting the file.
CL

Answer to Question 2

FALSE
Explanation: An actor is an external entity that interacts with the system (similar to an external entity in data-flow diagramming).
CL