Rather than allowing a user to select a primary key value, it is a good idea to use a(n) ______ to generate the value.
Fill in the blank(s) with the appropriate word(s).
Answer: Sequence
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Answer the following statements true (T) or false (F)
1. External storage exists after program execution. 2. Generally there is less external storage than internal memory. 3. Without direct access files, it would be impossible to support the data-management operations efficiently in an external environment. 4. A file of integer records will have less records per block than a file of student records. 5. According to the text, you can read and write a block of records, but you cannot read or write an individual record.
Select all that apply. Of the following, which statements have the same meaning?
a. int *ptr = nullptr; b. int ptr = nullptr; c. *int ptr = nullptr; d. int* ptr = nullptr; e. int ptr* = nullptr;