The ____ object should be used to ensure that the user enters data in a field.

________ is a built-in add-in program in Excel 2013 that enables you to import millions of

rows of data from multiple data sources, create a relationship between two or more related tables within one workbook, and maintain connections. Fill in the blank(s) with correct word

Thread safety in JavaFX applications is achieved not by synchronizing thread actions, but by ensuring that programs manipulate the scene graph from only the JavaFX application thread. This technique is called ________.

a. thread restriction. b. scene graph confinement. c. thread confinement. d. None of the above.