Question:Draw a flowchart for internal subroutine. 

See your text book (Programming Practice and Techniques) at page 28, figure 2-3

Question:Draw a structure chart for numbers problem (counting positive, negative and zero number). 

See your text book (Programming Practice and Techniques) at page 34, figure 2-7

Question:Draw a structured flowchart on structure chart which is for counting positive, negative and zero number. 

See your text book (Programming Practice and Techniques) at page 44, figure 2-16

Question:Draw a flowchart for sorting three numbers. 

See your text book (Programming Practice and Techniques) at page 52, figure 3-4

Question:What do you mean by maintaining files or database? 

Maintaining refers to any activities that change the number of records in a master file. Such activities are as follows:

-> Adding records to and deleting records from a master file are the most common maintenance activities.
-> Initial creation of the master file can also consider as maintenance.
-> Elimination of the master file when the file is no longer needed.

Question:What do you mean by updating file or database? 

-> Updating a master file changes the content of one or more records in the file but does not alter the number of records.
-> Sometimes it is considered as one type of file maintenance activity.

Question:What do you mean by referencing file? 

Referencing a file changes nothing in the file; it merely extracts information from the file.