Unit 2

Question 1

What are the data structure table column names?

Answer 1

• field name
• keyfield
• data type
• field length
• validation

Question 2

What requirements could there be in a given scenario?

Answer 2

• interface: would a GUI or CLI be more suitable?
• data structures: Would arrays (short term) or files (long term) be more suitable for storing the data needed?
• file handling: How should the files be stored? Serially?
• validation: what fields can you apply what validation techniques to? Specific fields?
• variables: what are the advantages and disadvantages of local and global variables?
• data types: How would the user input each data type?

remember to be specific to the scenario and the programming language (python)

Question 3

How do you open a file in python?

Answer 3

file = open(“filename.txt”)

Question 4

What parameters can be passed into the “open()” function?

Answer 4

• “x” creates the file
• “r” opens the file for read only
• “w” overwrites the file
• “a” adds to the end of the file
• “r+” reads and overwrites
• “a+” reads and adds to a file