Storing data and records questions
Q1. What is the difference between an integer and a real number?
Q2. What is a string?
Q3. Describe with an example how to convert a number into BCD.
Q4. Define a field and a record.
Q5. Define a file and a database.
Q6. Explain what a primary key is.
Q7. What is an ‘overhead’? Give examples to illustrate your answer.
Q8. Describe the seven steps needed to calculate the size of a file of fixed size records.
Q9. Explain how a file of variable length records is constructed.
Q10. State one advantage and one disadvantage of variable length records over fixed length records.