- 5 In the context of query optimization, what does the term “selectivity” mean?
- a) The percentage of disk space used by the table.
- b) The speed at which records are accessed.
- c) The fraction of records that satisfy a condition.
- d) The order in which records are stored.
<button class=”acc”>Show Answer</button> <div class=”pnl”> <p> Answer: c </p> </div>