SQLUpdate modifies data in a database. An alternative, using raw SQL, is described in "Updating Data with Raw SQL". If you find that the examples in this tutorial do not work ...
Roots
(Built-in Mathematica Symbol) Roots[lhs == rhs, var] yields a disjunction of equations which represent the roots of a polynomial equation.
ExposeWidgetReferences is an option to Widget which specifies a list of normally internal \:f3b5children widget reference names to include as publicly available instances.
ScriptSource is an option to Script which specifies a location to load the script code from.
Widget["MenuBar"] represents a menu bar.
Widget["MenuItem"] represents a menu item.
Widget["Menu"] represents a menu.
Widget["PasswordField"] represents a password field.
Widget["TextField"] represents a text field.
Sinusoid is a type of waveform.