A data series is a related set of:

Answer the following statements true (T) or false (F)

1. An attribute contains entities. 2. An output report must have the same fields and in the same order as the database table. 3. A query uses conditional expressions to select data. 4. Queries build a new table by selecting all or part of the records and/or fields. 5. Forms allow the user to see all of the data for one record at one time on the screen.

Which of the following statements is false?

a) C# 6’s null-conditional operator (?!) accesses a property or calls a method only if its left operand is not null; otherwise, evaluation of the expression terminates and the value of the entire expression is null. b) A nullable type is a value type that also can be null. c) You specify a nullable type by following a value type’s name with a question mark (?). d) The GetValueOrDefault method checks whether a nullable-type variable contains a value. If so, the method returns that value; otherwise, it returns the value type’s default value.