Find courses with no required prerequisite.
Write queries/statements for the following. (Use tables created in Chapter 4 Lab Activity.)
```
SQL> SELECT *
2 FROM course
3 WHERE PreReq IS NULL;
COURSE TITLE CREDITS PREREQ
------ -------------------- ---------- ------
EN100 Basic English 0
CIS253 Database Systems 3
MA150 College Algebra 3
AC101 Accounting 3
```
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a. param keyword b. var operator c. @ symbol d. ref clause
If you want to modify a saved query, open the query in ________ view
Fill in the blank(s) with correct word
In the figure above, the name of the book is Entrees.
Answer the following statement true (T) or false (F)
Given the following pseudocode, how many times will module B010 be called?
``` Start Process B000 DOWHILE not EOF Process B010 IF condition THEN Process B020 (ELSE) ENDIF ENDDO Process B020 Process B030 Stop ``` a) exactly 0 times b) 0 or more times c) exactly 1 time d) 1 or more times